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DSSSB Lab Assistant 2021: 7 September, Laboratory Assistant (Chemistry), Shift 1

  • Date: 7 September 2021
  • Shift: 1
  • Language: Bilingual
  • 157 pages
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 1 of 157
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Notations :
1.Options shown in green color and with icon are correct.
2.Options shown in red color and with icon are incorrect.



Question Paper Name :                                                        ROCKET1 CHEM 070821S1
Subject Name :                                                               Laboratory Assistant (Chemistry)
Creation Date :                                                              2021-09-07 11:31:29
Duration :                                                                   120
Total Marks :                                                                200
Display Marks:                                                               Yes
Share Answer Key With Delivery Engine :                                      No
Actual Answer Key :                                                          Yes
Calculator :                                                                 None
Magnifying Glass Required? :                                                 No
Ruler Required? :                                                            No
Eraser Required? :                                                           No
Scratch Pad Required? :                                                      No
Rough Sketch/Notepad Required? :                                             No
Protractor Required? :                                                       No
Show Watermark on Console? :                                                 Yes
Highlighter :                                                                No
Auto Save on Console? ( SA type of questions will be always auto saved ) :   No



                                                            General Ability
Group Number :                                                               1
Group Id :                                                                   10343521
Group Maximum Duration :                                                     0
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Group Minimum Duration :                                              0
Show Attended Group? :                                                No
Edit Attended Group? :                                                No
Break time :                                                          0
Group Marks :                                                         20
Is this Group for Examiner? :                                         No



                                                     General Ability
Section Id :                                                          10343521
Section Number :                                                      1
Section type :                                                        Online
Mandatory or Optional :                                               Mandatory
Number of Questions :                                                 20
Number of Questions to be attempted :                                 20
Section Marks :                                                       20
Enable Mark as Answered Mark for Review and Clear Response :          Yes
Sub-Section Number :                                                  1
Sub-Section Id :                                                      10343525
Question Shuffling Allowed :                                          Yes

Question Number : 1 Question Id : 103435405 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Find the missing term in the given series.

RES, SFT, TGU, UHV, ___.
Options :
1.   WLV
2.   VLW
3.   WIV
4.   VIW
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Question Number : 1 Question Id : 103435405 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
दी गई ृंखला म लु    पद ात कर।

RES, SFT, TGU, UHV, ________।
Options :
1.   WLV
2.   VLW
3.   WIV
4.   VIW


Question Number : 2 Question Id : 103435406 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Out of the given options, three are similar in a certain manner. However, one option is NOT like the other three. Select the option which is
different from the rest.
Options :
1.    Ahead
2.    Adverb
3.    Aid
4.    Acid


Question Number : 2 Question Id : 103435406 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िदए गए िवक    ों म से तीन एक िनि त तरीके से समान ह। हालाँ िक, एक िवक       अ    तीन की तरह नहीं है । उस िवक     का चयन कर जो अ       से अलग है ।
Options :
1.   आगे
2.   ि या िवशेषण
3.   सहायता
4.   अ
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Question Number : 3 Question Id : 103435407 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Out of the given options, three are similar in a certain manner. However, one option is NOT like the other three. Select the option which is
different from the rest.
Options :
1.    AIDS
2.    Malaria
3.    Zika
4.    Swine flu


Question Number : 3 Question Id : 103435407 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िदए गए िवक     ों म से तीन एक िनि त तरीके से समान ह। हालाँ िक, एक िवक      अ    तीन की तरह नहीं है । उस िवक     का चयन कर जो अ       से अलग है ।
Options :
1.   एड् स
2.   मले रया
3.   िज़का
4.      ाइन    ू


Question Number : 4 Question Id : 103435408 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Out of the given options, three are similar in a certain manner. However, one option is NOT like the other three. Select the option which is
different from the rest.
Options :
1.    Snake - Hiss
2.    Duck - Quack
3.    Goat - Bleat
4.    Camel - Howl
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Question Number : 4 Question Id : 103435408 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िदए गए िवक    ों म से तीन एक िनि त तरीके से समान ह। हालाँ िक, एक िवक   अ    तीन की तरह नहीं है । उस िवक   का चयन कर जो अ   से अलग है ।
Options :
1.   सां प - फुफकार
2.   बतख - ै क
3.   बकरी -     ीट
4.   ऊंट - हॉवेल


Question Number : 5 Question Id : 103435409 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Select the option that is related to the fourth term on the same basis as the second term is related to the first term.

Lungs : Covid-19 :: Hypermetropia : ?
Options :
1.   Nose
2.   Eyes
3.   Teeth
4.   Liver


Question Number : 5 Question Id : 103435409 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
उस िवक      का चयन कर जो चौथे पद से उसी कार से संबंिधत है िजस कार से दू सरा पद पहले पद से संबंिधत है ।

फेफड़े : कोिवड-19 :: दीघ ि : ?
Options :
1.   नाक
2.   आं ख
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3.   दाँ त
4.   यकृत


Question Number : 6 Question Id : 103435410 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
In a certain language,
sun is yellow is written as sir anu med;
moon is red is written as med piz tor;
red and yellow sun is written as nem piz anu sir.

What is 'and' written as?
Options :
1.   sir
2.   nem
3.   piz
4.   anu


Question Number : 6 Question Id : 103435410 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
एक िनि त भाषा म,
sun is yellow को sir anu med के  प म िलखा गया ह;
moon is red को med piz tor के   प म िलखा गया ह;
red and yellow sun को nem piz anu sir के  प म म िलखा गया ह;

'and' को िकस    प म िलखा जाता है ?
Options :
1.    sir
2.    nem
3.    piz
4.    anu
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Question Number : 7 Question Id : 103435411 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
In a certain code language, CHIRAG may be called DI3S1H. So, GOURAV may be called ___________.
Options :
1.    F2TS5X
2.    X5T2F
3.    H2VS1W
4.    H45S1W


Question Number : 7 Question Id : 103435411 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
एक िनि त कोड भाषा म, CHIRAG को DI3S1H कहा जा सकता है । तो, GOURAV को ___________ कहा जा सकता है ।
Options :
1.   F2TS5X
2.   X5T2F
3.   H2VS1W
4.   H45S1W


Question Number : 8 Question Id : 103435412 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Pointing towards a photograph, X said “Y is the brother of my husband’s father’s son.” How is Y related to X ?
Options :
1.   Husband's Father
2.   Son
3.   Husband's Brother
4.   Brother


Question Number : 8 Question Id : 103435412 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
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Correct Marks : 1 Wrong Marks : 0.25
एक त ीर की ओर इशारा करते ए, X ने कहा, "Y मेरे पित के िपता के पु का भाई है ।" Y, X से कैसे संबंिधत है ?
Options :
1.   पित के िपता
2.   पु
3.   पित का भाई
4.   भाई


Question Number : 9 Question Id : 103435413 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Seven chairs of four different colours are arranged in a vertical height over one another under the following conditions:
1. Counting from the top, the third, fifth and sixth chairs are green.
2. Two black chairs are placed one over the another.
3. Two green chairs are placed between a blue and a red chair.
4. One green chair is between a black chair and a red chair.
Which chair is placed at the bottom?
Options :
1.   Green
2.   Black
3.   Red
4.   Blue


Question Number : 9 Question Id : 103435413 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत प र थितयों म चार िविभ रं गों की सात कुिसयों को एक दू सरे के ऊपर एक ल वत ऊंचाई म         व थत िकया गया है :
1. ऊपर से िगनने पर तीसरी, पाँ चवीं और छठी कुिसयाँ हरे रं ग की ह।
2. दो काली कुिसयाँ एक के ऊपर एक रखी ई ह।
3. नीली और लाल कुस के बीच दो हरी कुिसयाँ रखी गई ह।
4. काली कुस और लाल कुस के बीच एक हरी कुस है ।
सबसे नीचे कौन सी कुस रखी गई है ?
Options :
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1.   हरा
2.   काला
3.   लाल
4.   नीला


Question Number : 10 Question Id : 103435414 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
In the question given below, an assertion is given, followed by a reason. You have to decide whether the assertion is true, reason is true or both
are true and if the reason is the correct explanation of the assertion.

Assertion- Vaccines provide immunity for a specific time frame in case of certain viral diseases like Covid-19.
Reason- The virus changes its genetic code from time to time.
Options :
1.   Assertion is true, reason is false
2.   Assertion is false, reason is true
3.   Both assertion and reason are true, reason is the correct explanation of the assertion
4.   Both assertion and reason are true, reason is not the correct explanation of the assertion


Question Number : 10 Question Id : 103435414 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
नीचे िदए गए  म, एक अिभकथन िदया गया है , उसके बाद एक कारण िदया गया है । आपको यह तय करना है िक                    ा अिभकथन स      है , कारण स    है या
दोनों स ह और यिद कारण, अिभकथन की सही ा ा है ।

अिभकथन- कोिवड -19 जैसे कुछ वायरल रोगों के मामले म टीके एक िविश समय सीमा के िलए ितर ा दान करते ह।
कारण- वायरस समय-समय पर अपना अनुवां िशक कूट बदलता रहता है ।
Options :
1.   अिभकथन स        है , कारण अस    है
2.   अिभकथन अस         है , कारण स   है
3.   अिभकथन और कारण दोनों स          ह, कारण कथन की सही        ा   ा है
4.   अिभकथन और कारण दोनों स          ह, कारण कथन की सही        ा   ा नहीं है
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Question Number : 11 Question Id : 103435415 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
In the question given below, a statement is given, followed by two assumptions I and II. You have to consider the statement to be true even if it
seems to be at variance from commonly known facts. You have to decide which of the given assumptions, if any, is implicit in the given
statement.

Statement-National Education Policy of 2020 is framed in which students are given freedom to study the subjects of their choice making them
ready for different vocational jobs.

Assumption I- Students would like it if they got to choose subjects of their liking to study.
Assumption II- One objective of education is to prepare students for a career or a job.
Options :
1.   Only assumption I is implicit
2.   Only assumption II is implicit
3.   Either assumption I or assumption II is implicit
4.   Both assumption I and II are implicit


Question Number : 11 Question Id : 103435415 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
नीचे िदए गए म, एक कथन िदया गया है , िजसके बाद दो धारणाएं I और II दी गई ह। आपको उन कथनों को स मानना है , भले ही यह सामा तः                    ात
त से िभ तीत हो। आपको यह िनणय लेना है िक दी गई धारणाओं म से कौन सा, यिद कोई हो, तो िदए गए कथन म िनिहत है ।

कथन- 2020 की रा ीय िश ा नीित तैयार की गई है िजसम छा ों को िविभ            ावसाियक नौक रयों के िलए तैयार करने के िलए अपनी पसंद के िवषयों का
अ यन करने की तं ता दी गई है ।

धारणा I- छा इसे पसंद करगे यिद उ       अ यन करने के िलए अपनी पसंद के िवषयों का चयन करने का अवसर िमलता है ।

धारणा II- िश ा का एक उ े      छा ों को क रयर या नौकरी के िलए तैयार करना है ।
Options :
1.   केवल धारणा I िनिहत है
2.   केवल धारणा II िनिहत है
3.   न तो धारणा I और न ही धारणा II िनिहत है
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4.   धारणा I और II दोनों िनिहत ह


Question Number : 12 Question Id : 103435416 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Identify the wrong term in the series.

4913, 6958, 9261, 12167
Options :
1.   4913
2.   6958
3.   9261
4.   12167


Question Number : 12 Question Id : 103435416 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
 ृंखला म गलत पद की पहचान कर I

4913, 6958, 9261, 12167
Options :
1.   4913
2.   6958
3.   9261
4.   12167


Question Number : 13 Question Id : 103435417 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Complete the following series.

24, 60, 210, ___
Options :
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 12 of 157
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1.   5197.5
2.   945
3.   549
4.   5000


Question Number : 13 Question Id : 103435417 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत ृंखला को पूरा कर I

24,60, 210, ___
Options :
1.   5197.5
2.   945
3.   549
4.   5000


Question Number : 14 Question Id : 103435418 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following Venn diagram correctly depicts these statements ?

Statement I - No flower is Lily.
Statement II - All Lily are Blue.
Where F= Flower, L= Lily and B = Blue
Options :




1.
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2.




3.




4.



Question Number : 14 Question Id : 103435418 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा वेन आरे ख इन कथनों को सही तरह से दशाता है ?
कथन I - कोई फूल िलली नहीं है ।
कथन II - सभी िलली नीले ह।
जहां F= फूल, L= िलली और B = नीला
Options :




1.
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2.




3.




4.



Question Number : 15 Question Id : 103435419 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
I am 180 degrees left to North? Find the direction I am facing right now.
Options :
1.   East
2.   West
3.   North
4.   South


Question Number : 15 Question Id : 103435419 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
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म उ र की तरफ 180 िड ी बाएं ओर ँ ? वह िदशा ात कर िजसम अभी मेरा मुख ह।
Options :
1.   पूव
2.   पि म
3.   उ र
4.   दि ण


Question Number : 16 Question Id : 103435420 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Rahul is driving towards east. He finds massive landslide on the road and turns 90 degrees to his left and moves another 200 m and then heads
towards his home in the clockwise direction at 135 degrees. In which direction Rahul is moving now ?
Options :
1.   South-East
2.   North-West
3.   South-West
4.   North-East


Question Number : 16 Question Id : 103435420 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
रा ल पूव की ओर गाड़ी चला रहा है । वह सड़क पर बड़ा भू लन पाता है और अपनी बाएं ओर 90 िड ी मुड़ता है और 200 मीटर आगे बढ़ता है और िफर 135
िड ी पर दि णावत िदशा म अपने घर की ओर जाता है । रा ल अब िकस िदशा म आगे बढ़ रहा है ?
Options :
1.   दि ण-पूव
2.   उ र-पि म
3.   दि ण-पि म
4.   उ र-पूव


Question Number : 17 Question Id : 103435421 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
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Which answer figure would complete the question figure?




Options :




1.




2.
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3.




4.



Question Number : 17 Question Id : 103435421 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
कौन सी उ र आकृित     आकृित को पूरा करे गी?




Options :
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1.




2.




3.




4.



Question Number : 18 Question Id : 103435422 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
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Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Out of the given options, three are similar in a certain manner. However, one option is NOT like the other three. Select the option which is
different from the rest.
Options :

1.




2.


3.




4.



Question Number : 18 Question Id : 103435422 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िदए गए िवक    ों म से तीन एक िनि त तरीके से समान ह। हालाँ िक, एक िवक       अ    तीन की तरह नहीं है । उस िवक     का चयन कर जो अ       से अलग है ।
Options :

1.
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2.


3.




4.



Question Number : 19 Question Id : 103435423 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following correctly represents the exact Mirror image of the question figure? Assume mirror at the right side of the question figure.
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 21 of 157
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Text of page 21
Options :




1.




2.




3.
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 22 of 157
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Text of page 22
4.



Question Number : 19 Question Id : 103435423 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा    आकृित की सटीक दपण छिव का सही ितिनिध      करता है ? दपण को    आकृित के दाएं ओर मान।




Options :




1.
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 23 of 157
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Text of page 23
2.




3.




4.



Question Number : 20 Question Id : 103435424 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 24 of 157
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Text of page 24
Write the maximum number of triangles in the following figure?




Options :
1.   22
2.   27
3.   26
4.   30


Question Number : 20 Question Id : 103435424 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत आकृित म ि भुजों की अिधकतम सं       ा िलख?




Options :
1.   22
2.   27
3.   26
4.   30
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General Awareness
Group Number :                                                        2
Group Id :                                                            10343522
Group Maximum Duration :                                              0
Group Minimum Duration :                                              0
Show Attended Group? :                                                No
Edit Attended Group? :                                                No
Break time :                                                          0
Group Marks :                                                         20
Is this Group for Examiner? :                                         No



                                                  General Awareness
Section Id :                                                          10343522
Section Number :                                                      1
Section type :                                                        Online
Mandatory or Optional :                                               Mandatory
Number of Questions :                                                 20
Number of Questions to be attempted :                                 20
Section Marks :                                                       20
Enable Mark as Answered Mark for Review and Clear Response :          Yes
Sub-Section Number :                                                  1
Sub-Section Id :                                                      10343526
Question Shuffling Allowed :                                          Yes

Question Number : 21 Question Id : 103435425 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The study of images of deities is called _____.
Options :
1.   iconography
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 26 of 157
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2.   photography
3.   pictography
4.   imagography


Question Number : 21 Question Id : 103435425 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
दे वताओं की छिवयों के अ यन को _____ कहा जाता है ।
Options :
1.   आइकोनो ाफी
2.   छायािच
3.   िच िलिप
4.   इमेजो ाफी


Question Number : 22 Question Id : 103435426 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Pt. Birju Maharaj is well known for _____.
Options :
1.    Kuchipudi
2.    Odissi
3.    Bharatanatyam
4.    Kathak


Question Number : 22 Question Id : 103435426 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
पं. िबरजू महाराज ___________ के िलए िस   ह।
Options :
1.   कूिचपूड़ी
2.   ओिड़सी
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 27 of 157
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3.   भरतना   म
4.   कथक


Question Number : 23 Question Id : 103435427 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which among the following was the span of first "five year plan" of India?
Options :
1.   1951-1956
2.   1952-1958
3.   1950-1955
4.   1955-1960


Question Number : 23 Question Id : 103435427 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सी भारत की पहली "पंचवष य योजना" की अविध थी?
Options :
1.   1951-1956
2.   1952-1958
3.   1950-1955
4.   1955-1960


Question Number : 24 Question Id : 103435428 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The word "Economics" has been derived from which language?
Options :
1.   Italian
2.   Greek
3.   Latin
4.   French
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 28 of 157
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Text of page 28
Question Number : 24 Question Id : 103435428 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
"अथशा " श          िकस भाषा से   ु   आ है ?
Options :
1.   इतालवी
2.   यूनानी
3.   लैिटन
4.       ा   ीसी


Question Number : 25 Question Id : 103435429 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is the main cause for transmission of the 'Hepatitis C ' virus?
Options :
1.   Bite of Mosquito
2.   Contaminated food
3.   Sharing Drug Needle
4.   Sharing Cloth


Question Number : 25 Question Id : 103435429 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा 'हे पेटाइिटस C' वायरस के संचरण का मु   कारण है ?
Options :
1.   म       र का काटना
2.   द् दु िषत खाना
3.   दवा की सुई साझा करना
4.   कपड़ा साझा करना
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 29 of 157
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Question Number : 26 Question Id : 103435430 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is the main component of gobar gas?
Options :
1.   Carbon Dioxide
2.   Methane
3.   Propane
4.   Oxygen


Question Number : 26 Question Id : 103435430 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा गोबर गैस का मु   घटक है ?
Options :
1.   काबन डाईऑ     ाइड
2.   िमथेन
3.    ोपेन
4.   ऑ       ीजन


Question Number : 27 Question Id : 103435431 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
_________ is responsible for depletion of Ozone layer in atmosphere?
Options :
1.   Nitrous Oxide
2.   Carbon dioxide
3.   Chlorofluorocarbon
4.   Carbon Monoxide


Question Number : 27 Question Id : 103435431 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 30 of 157
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Text of page 30
Correct Marks : 1 Wrong Marks : 0.25
वायुमंडल म ओजोन परत के ास के िलए _________ िज ेदार है ?
Options :
1.   नाइट् स आ      ाइड
2.   काबन डाईऑ         ाइड
3.      ोरो      ोरोकाबन
4.   काबन मोनो       ाइड


Question Number : 28 Question Id : 103435432 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
India stretches 3,000km from east to west, spanning roughly 30 degrees longitude. This corresponds with a _____________ difference in mean
solar times - the passage of time based on the position of the sun in the sky.
Options :
1.    one and half hours
2.    two and half hours
3.    one hour
4.    two hours


Question Number : 28 Question Id : 103435432 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
भारत लगभग 30 िड ी रे खां श म पूव से पि म तक 3,000km तक फैला है । यह औसत सौर समय म _________ अंतर से मेल खाता है - आकाश म सूय की
 थित के आधार पर समय का बीतना।
Options :
1.   डे ढ़ घंटे
2.   ढाई घंटे
3.   एक घंटा
4.   दो घंटे


Question Number : 29 Question Id : 103435433 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 31 of 157
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Text of page 31
Correct Marks : 1 Wrong Marks : 0.25
Which river divides peninsular block of India into two parts?
Options :
1.   Narmada
2.   Mahanadi
3.   Ganga
4.   Kaveri


Question Number : 29 Question Id : 103435433 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
कौन सी नदी भारत के ाय ीपीय खंड को दो भागों म िवभािजत करती है ?
Options :
1.   नमदा
2.   महानदी
3.   गंगा
4.   कावेरी


Question Number : 30 Question Id : 103435434 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Who among the following died in 1948?
Options :
1.   Bal Gangadhar Tilak
2.   Subhash Chandra Bose
3.   Bhagat Singh
4.   Mahatma Gandhi


Question Number : 30 Question Id : 103435434 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 32 of 157
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Text of page 32
िन िल खत म से िकसकी मृ ु 1948 म ई थी?
Options :
1.   बाल गंगाधर ितलक
2.   सुभाष च    बोस
3.   भगत िसंह
4.   महा ा गां धी


Question Number : 31 Question Id : 103435435 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
When was Indian 'Independence Act' Passed in British Parliament?
Options :
1.   18 July, 1947
2.   2 March, 1947
3.   15 August, 1947
4.   10 August, 1947


Question Number : 31 Question Id : 103435435 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
ि िटश संसद म भारतीय '   तं ता अिधिनयम' कब पा रत िकया गया था?
Options :
1.   18 जुलाई, 1947
2.   2 माच, 1947
3.   15 अग     , 1947
4.   10 अग     , 1947


Question Number : 32 Question Id : 103435436 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Who was the Governor General of India during the 1857 revolt?
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 33 of 157
Page 33 of 157
Text of page 33
Options :
1.   Charles Canning
2.   Warren Hastings
3.   John Adam
4.   John Shore


Question Number : 32 Question Id : 103435436 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
1857 के िव ोह के दौरान भारत के महारा   पाल कौन थे?
Options :
1.   चा     कैिनंग
2.   वारे न हे   ं
3.   जॉन एडम
4.   जॉन शोर


Question Number : 33 Question Id : 103435437 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Vasco da Gama landed in India at _____.
Options :
1.   Bombay
2.   Madras
3.   Calicut
4.   Calcutta


Question Number : 33 Question Id : 103435437 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
वा ो द गामा भारत म _________ म उतरा था।
Options :
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 34 of 157
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Text of page 34
1.   बॉ े
2.   म ास
3.   कैिलकट
4.   कलक ा


Question Number : 34 Question Id : 103435438 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
"Bharat Ratna'' Award was instituted/established in which year?
Options :
1.   1954
2.   1950
3.   1947
4.   1948


Question Number : 34 Question Id : 103435438 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
'भारत र ' पुर   ार िकस वष म थािपत/ मािणत िकया गया था?
Options :
1.   1954
2.   1950
3.   1947
4.   1948


Question Number : 35 Question Id : 103435439 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The book ''Buddha Or Karl Marx'' written by _____.
Options :
1.   C. Rajagopalachari
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 35 of 157
Page 35 of 157
Text of page 35
2.   Jawaharlal Nehru
3.   Mahatma Gandhi
4.   Dr. B.R. Ambedkar


Question Number : 35 Question Id : 103435439 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
पु क ''बु या काल मा      ''___________ ारा िलखी गई है ।
Options :
1.   सी. राजगोपालाचारी
2.   जवाहरलाल नेह
3.   महा ा गां धी
4.   डॉ. बी.आर. आ ेडकर


Question Number : 36 Question Id : 103435440 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The drafting committee of Indian Constitution was headed by:
Options :
1.   Dr Rajendra Prasad
2.   Dr. B. R. Ambedkar
3.   C. Rajagopalachari
4.   Sachchidananda Sinha


Question Number : 36 Question Id : 103435440 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
भारतीय संिवधान की ा प सिमित के अ         थे:
Options :
1.   डॉ राजे    साद
2.   डॉ. बी.आर. आ ेडकर
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 36 of 157
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Text of page 36
3.   सी. राजगोपालाचारी
4.   स    दान   िस ा


Question Number : 37 Question Id : 103435441 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The 44th amendment of Indian constitution is about:
Options :
1.   Right to property
2.   Right to equality
3.   Right to education
4.   Right to Speech


Question Number : 37 Question Id : 103435441 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
भारतीय संिवधान के 44व संशोधन िन के बारे म है :
Options :
1.   स ि का अिधकार
2.   समानता का अिधकार
3.   िश ा का अिधकार
4.   वाक का अिधकार


Question Number : 38 Question Id : 103435442 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The Olympic Games are held every:
Options :
1.   6 Years
2.   5 Years
3.   2 years
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 37 of 157
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Text of page 37
4.   4 years


Question Number : 38 Question Id : 103435442 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
ओलंिपक खेल     ेक िन पर आयोिजत िकए जाते ह:
Options :
1.   6 वष
2.   5 वष
3.   2 वष
4.   4 वष


Question Number : 39 Question Id : 103435443 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
In which year, were the Asian Games held for the first time?
Options :
1.   1951
2.   1952
3.   1976
4.   1965


Question Number : 39 Question Id : 103435443 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िकस वष म, एिशयाई खेल पहली बार आयोिजत िकए गए थे?
Options :
1.   1951
2.   1952
3.   1976
4.   1965
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 38 of 157
Page 38 of 157
Text of page 38
Question Number : 40 Question Id : 103435444 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Polo was played by nomads, who migrated to a country now called as ___________ some time between 600 B.C. and 100 A.D.
Options :
1.   Australia
2.   China
3.   Iran
4.   Russia


Question Number : 40 Question Id : 103435444 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
पोलो बंजारों ारा खेला जाता था, जो 600 B.C. और 100 A.D. के बीच कुछ समय के िलए अभी ___________ नाम से जाने जाते दे श म वासन कर गए थे।
Options :
1.   ऑ े िलया
2.   चीन
3.   ईरान
4.     स



                                                     Arithmetic Ability
Group Number :                                                            3
Group Id :                                                                10343523
Group Maximum Duration :                                                  0
Group Minimum Duration :                                                  0
Show Attended Group? :                                                    No
Edit Attended Group? :                                                    No
Break time :                                                              0
Group Marks :                                                             20
Is this Group for Examiner? :                                             No
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 39 of 157
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Text of page 39
Arithmetic Ability
Section Id :                                                          10343523
Section Number :                                                      1
Section type :                                                        Online
Mandatory or Optional :                                               Mandatory
Number of Questions :                                                 20
Number of Questions to be attempted :                                 20
Section Marks :                                                       20
Enable Mark as Answered Mark for Review and Clear Response :          Yes
Sub-Section Number :                                                  1
Sub-Section Id :                                                      10343527
Question Shuffling Allowed :                                          Yes

Question Number : 41 Question Id : 103435445 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
5 + 5 × 5 ÷ 5 – 5 is ________.
Options :
1.    10
2.    5
3.    4
4.    15


Question Number : 41 Question Id : 103435445 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
5 + 5 × 5 ÷ 5 - 5 ________ है ।
Options :
1.    10
2.    5
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 40 of 157
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Text of page 40
3.   4
4.   15


Question Number : 42 Question Id : 103435446 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
In an examination a student was asked to find 1/12 of a certain number. By mistake, he found 1/2 of it. His answer was 50 more than the correct
answer. Then the number is ___________.
Options :
1.    165
2.    178
3.    180
4.    120


Question Number : 42 Question Id : 103435446 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
एक परी ा म छा को एक िनि त सं ा का 1/12 ात करने के िलए कहा गया था। गलती से, उसने इसका 1/2 भाग ात िकया। उसका उ र सही उ र से 50
अिधक था। तो सं ा ___________ है ।
Options :
1.   165
2.   178
3.   180
4.   120


Question Number : 43 Question Id : 103435447 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
If a shopkeeper gives 10% discount and then 20% discount on a book which has the marked price 300, how much would be the selling price of
the book?
Options :
1.     Rs 263
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 41 of 157
Page 41 of 157
Text of page 41
2.   Rs 244
3.   Rs 224
4.   Rs 216


Question Number : 43 Question Id : 103435447 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
यिद एक दु कानदार पु   क पर 10% की छूट दे ता है और िफर 20% की छूट दे ता है , िजसका अंिकत मू   300 है , तो पु   क का िव य मू   िकतना होगा?
Options :
1.   263 पए
2.   244 पए
3.   224 पए
4.   216 पए


Question Number : 44 Question Id : 103435448 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
How much percent above the cost price should a shopkeeper mark his goods so that after allowing a discount of 25% on the marked price, he
gains 50%?
Options :
1.    80%
2.    100%
3.    85%
4.    50%


Question Number : 44 Question Id : 103435448 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
एक दु कानदार को अपनी व     ु पर लागत मू   से िकतना ितशत अिधक अंिकत करना चािहए िक अंिकत मू           पर 25% की छूट दे ने के बाद उसे 50% का
लाभ ा हो?
Options :
1.   80%
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 42 of 157
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2.   100%
3.   85%
4.   50%


Question Number : 45 Question Id : 103435449 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The number 0.1 is what percent of 20?
Options :
1.   0.5%
2.   1%
3.   5%
4.   0.05%


Question Number : 45 Question Id : 103435449 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
सं ा 0.1, 20 का िकतना ितशत है ?
Options :
1.   0.5%
2.   1%
3.   5%
4.   0.05%


Question Number : 46 Question Id : 103435450 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The side of a triangle is increased by 10%. What is the percentage increase in its area?
Options :
1.   22%
2.   21%
3.   20%
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 43 of 157
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4.   50%


Question Number : 46 Question Id : 103435450 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
एक ि भुज की भुजा म 10% की वृ      की गई है । इसके े फल म िकतने ितशत की वृ            ई है ?
Options :
1.   22%
2.   21%
3.   20%
4.   50%


Question Number : 47 Question Id : 103435451 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
A man sells his type writer at 10 % loss. If he sell it for Rs. 90 more, he gains 5%. The cost price of the type writer is Rs ___________.
Options :
1.   1200
2.   800
3.   600
4.   1000


Question Number : 47 Question Id : 103435451 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
एक        अपने टाइप राइटर को 10% हािन पर बेचता है । यिद वह इसे 90 पए अिधक म बेचता है , तो उसे 5% का लाभ होता है । टाइप राइटर का लागत
मू ___________ पए है ।
Options :
1.   1200
2.   800
3.   600
4.   1000
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 44 of 157
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Question Number : 48 Question Id : 103435452 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
A man buys two articles for Rs.1800 sells one at a loss of 8% and on the other at gain of 10%. On whole he neither gains or loses. What was the
price of each article (in Rs)?
Options :
1.    1000 ; 800
2.    1300 ; 900
3.    1010 ; 850
4.    900 ; 800


Question Number : 48 Question Id : 103435452 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
एक         1800 पए म दो व ु खरीदता है , एक को 8% की हािन पर और दू सरे को 10% के लाभ पर बेचता है । कुल िमलाकर उसे न लाभ होता है और न
हािन होती है ।  ेक व ु का मू ( पए म) ा था?
Options :
1.   1000 ; 800
2.   1300 ; 900
3.   1010 ; 850
4.   900 ; 800


Question Number : 49 Question Id : 103435453 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
If (y - x) ÷ x = 3 ÷ 8. Find y : x.
Options :
1.     8:11
2.     11:8
3.     8:5
4.     5:8
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 45 of 157
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Question Number : 49 Question Id : 103435453 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
यिद (y - x) ÷ x = 3 ÷ 8 है । तो y : x ात कर।
Options :
1.   8:11
2.   11:8
3.   8:5
4.   5:8


Question Number : 50 Question Id : 103435454 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
A purse contain 1 rupee, 50 paise and 25 paise coins in the ratio 5 : 6 : 7. If the total money in the purse is Rs. 273. The number of 50 paise coins
in the purse will be:
Options :
1.    100
2.    196
3.    168
4.    152


Question Number : 50 Question Id : 103435454 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
एक बटु ए म 1 पया, 50 पैसे और 25 पैसे के िस     े 5:6:7 के अनुपात म ह। यिद बटु ए म कुल धन 273 पए ह। बटु ए म 50 पैसे के िस         ों की सं   ा होगी:
Options :
1.   100
2.   196
3.   168
4.   152
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 46 of 157
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Question Number : 51 Question Id : 103435455 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Find the compound interest, if Rs 6500 was invested for 2 years at 8% p.a.
Options :
1.    Rs 1018.6
2.    Rs 1800.14
3.    Rs 1017.4
4.    Rs 1081.6


Question Number : 51 Question Id : 103435455 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
च वृ      ाज ात कर, यिद 6500 पए, ित वष 8% की दर से 2 वष के िलए िनवेश िकए गए थे।
Options :
1.   1018.6 पए
2.   1800.14 पए
3.   1017.4 पए
4.   1081.6 पए


Question Number : 52 Question Id : 103435456 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
How much will Rs. 512 amount to in one year at 12.5% per annum, when the interest is compounded half yearly?
Options :
1.   Rs 556
2.   Rs 596
3.   Rs 645
4.   Rs 578


Question Number : 52 Question Id : 103435456 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 47 of 157
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Correct Marks : 1 Wrong Marks : 0.25
एक वष म ित वष 12.5% की दर से 512 पए िकतनी रािश के बराबर होगी, जब          ाज अधवािषक      प से च वृ     होता है ?
Options :
1.   556 पए
2.   596 पए
3.   645 पए
4.   578 पए


Question Number : 53 Question Id : 103435457 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Two runners A and B start running at 22 kmph and 8 kmph towards each other. They meet after 2 hours. How far (in km) were they from each
other when they started?
Options :
1.    28 km
2.    60 km
3.    50 km
4.    64 km


Question Number : 53 Question Id : 103435457 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
दो दौड़ाक A और B एक दू सरे की ओर 22 kmph और 8 kmph की गित से दौड़ना शु         करते ह। वे 2 घंटे के बाद िमलते ह। शु   करने के समय वे एक दू सरे
से िकतनी दू र (km म) थे?
Options :
1.   28 km
2.   60 km
3.   50 km
4.   64 km


Question Number : 54 Question Id : 103435458 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 48 of 157
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Correct Marks : 1 Wrong Marks : 0.25
A train 480 metre long, is running with a speed of 72 km/hr. In how much time will it pass a tunnel of 240 metre long?
Options :
1.    54 seconds
2.    48 seconds
3.    36 seconds
4.    42 seconds


Question Number : 54 Question Id : 103435458 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
480 मीटर लंबी एक रे लगाड़ी, 72 km/hr की गित से चल रही है । यह 240 मीटर लंबी सुरंग को िकतने समय म पार करे गी?
Options :
1.   54 सेकंड
2.   48 सेकंड
3.   36 सेकंड
4.   42 सेकंड


Question Number : 55 Question Id : 103435459 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
A and B together can do a piece of work in 10 days, but A alone can do it in 15 days. How many days would B alone take to do the same work?
Options :
1.   25 days
2.   30 days
3.   28 days
4.   32 days


Question Number : 55 Question Id : 103435459 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
A और B िमलकर िकसी काय को 10 िदनों म कर सकते ह, लेिकन A अकेला उसे 15 िदनों म कर सकता है । B अकेले उसी काय को करने म िकतने िदन
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 49 of 157
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लेगा?
Options :
1.    25 days
2.    30 days
3.    28 days
4.    32 days


Question Number : 56 Question Id : 103435460 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
P is 25% more efficient than Q. How much time will they working together, take to complete a job which P alone could have done in 45 days ?
Options :
1.    22 days
2.    25 days
3.    35 days
4.    30 days


Question Number : 56 Question Id : 103435460 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
P, Q से 25% अिधक कुशल है । वे एक साथ काम करके, काय को पूरा करने म िकतना समय लगे, िजसे P अकेले 45 िदनों म पूरा कर सकता था?
Options :
1.   22 िदन
2.   25 िदन
3.   35 िदन
4.   30 िदन


Question Number : 57 Question Id : 103435461 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Radius of largest sphere which can be made from sculpting a wooden cube of 7 cm is ______cm.
Options :
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 50 of 157
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1.   7
2.   7√2
3.   3.5
4.   14


Question Number : 57 Question Id : 103435461 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
सबसे बड़े गोले की ि     ा जो 7 cm के लकड़ी के घन को तराश कर बनाई जा सकती है , वह ______ cm है ।
Options :
1.   7
2.   7√2
3.   3.5
4.   14


Question Number : 58 Question Id : 103435462 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The pie chart given below shows the percentage distribution of girls in five different schools. Total number of girls is 25% less that total number
of boys.
The number of girls in P, Q and T together is 3900. Find the average of number of boys in all schools.
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 51 of 157
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Options :
1.   2000
2.   1250
3.   1500
4.   1750


Question Number : 58 Question Id : 103435462 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
नीचे िदया गया पाई चाट पां च िविभ िव ालयों म लड़िकयों के ितशत िवतरण को दशाता है । लड़िकयों की कुल सं   ा लड़कों की कुल सं   ा से 25% कम है ।
P, Q और T म िमलाकर लड़िकयों की सं ा 3900 है । सभी िव ालयों म लड़कों की सं ा का औसत ात कर।
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 52 of 157
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Options :
1.   2000
2.   1250
3.   1500
4.   1750


Question Number : 59 Question Id : 103435463 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The bar graph given below shows the total number of employees and total number of officers working in different banks.
Total number of employee = Total number of officers + Total number of clerks
Number of clerk in BOB is what percentage more than the number of officers in UCO bank?
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 53 of 157
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Options :
1.   18%
2.   25%
3.   15%
4.   12.50%


Question Number : 59 Question Id : 103435463 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
नीचे िदया गया बार ाफ कमचा रयों की कुल सं ा और िविभ बकों म काम करने वाले अिधका रयों की कुल सं   ा को दशाता है ।
कमचा रयों की कुल सं ा = अिधका रयों की कुल सं ा + िलिपकों की कुल सं ा
BOB म िलिपकों की सं ा, यूको बक म अिधका रयों की सं ा से िकतने ितशत अिधक है ?
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 54 of 157
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Text of page 54
Options :
1.   18%
2.   25%
3.   15%
4.   12.50%


Question Number : 60 Question Id : 103435464 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The Bar graph shows total number of customers buy Cakes and drinks in five months.
Total number of male customers is 1300.
If 10% of male customers and 30% of male customers are from January and April respectively. Find the ratio between the female customers in
April and January.
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 55 of 157
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Text of page 55
Options :
1.   121:105
2.   101:102
3.   144:101
4.   111:147


Question Number : 60 Question Id : 103435464 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
बार ाफ पां च महीनों म केक और पेय खरीदने वाले ाहकों की कुल सं ा को दशाता है ।
पु ष ाहकों की कुल सं ा 1300 है ।
यिद 10% पु ष ाहक और 30% पु ष ाहक मशः जनवरी और अ ैल से ह। अ ैल और जनवरी म मिहला ाहकों के बीच का अनुपात ात कर।
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 56 of 157
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Text of page 56
Options :
1.   121:105
2.   101:102
3.   144:101
4.   111:147



                                General English
Group Number :                             4
Group Id :                                 10343524
Group Maximum Duration :                   0
Group Minimum Duration :                   0
Show Attended Group? :                     No
Edit Attended Group? :                     No
Break time :                               0
Group Marks :                              20
Is this Group for Examiner? :              No
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 57 of 157
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General English
Section Id :                                                                       10343524
Section Number :                                                                   1
Section type :                                                                     Online
Mandatory or Optional :                                                            Mandatory
Number of Questions :                                                              16
Number of Questions to be attempted :                                              16
Section Marks :                                                                    20
Enable Mark as Answered Mark for Review and Clear Response :                       Yes
Sub-Section Number :                                                               1
Sub-Section Id :                                                                   10343528
Question Shuffling Allowed :                                                       Yes

Question Number : 61 Question Id : 103435465 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The sentence below has been divided into three parts. Select the part of the sentence that has an error. If the sentence has no error, select the
option 'No Error'.

Sarah and me had/ a great time while/ the kids were away.
Options :
1.   Sarah and me had
2.   a great time while
3.   the kids were away.
4.   No Error


Question Number : 61 Question Id : 103435465 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The sentence below has been divided into three parts. Select the part of the sentence that has an error. If the sentence has no error, select the
option 'No Error'.

Sarah and me had/ a great time while/ the kids were away.
Options :
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 58 of 157
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Text of page 58
1.   Sarah and me had
2.   a great time while
3.   the kids were away.
4.   No Error


Question Number : 62 Question Id : 103435466 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The sentence below has been divided into three parts. Select the part of the sentence that has an error. If the sentence has no error, select the
option 'No Error'.

It's an electric vehicle that/ looks like a cross between/ a motorcycle and a unicycle.
Options :
1.     It's an electric vehicle that
2.     looks like a cross between
3.     a motorcycle and a unicycle.
4.     No Error


Question Number : 62 Question Id : 103435466 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The sentence below has been divided into three parts. Select the part of the sentence that has an error. If the sentence has no error, select the
option 'No Error'.

It's an electric vehicle that/ looks like a cross between/ a motorcycle and a unicycle.
Options :
1.     It's an electric vehicle that
2.     looks like a cross between
3.     a motorcycle and a unicycle.
4.     No Error


Question Number : 63 Question Id : 103435467 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 59 of 157
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Text of page 59
Correct Marks : 1 Wrong Marks : 0.25
Select the word segment that substitutes (replaces) the bracketed word segment correctly and completes the sentence meaningfully. Select the
option 'no correction required' if the sentence is correct as given.

Twelve passengers (were arrested in the Netherlands for investigation).
Options :
1.   were arrested in Netherlands for investigation
2.   were arrested in Netherlands under investigation
3.   were arrested in Netherlands for investigation purposes
4.   No correction required


Question Number : 63 Question Id : 103435467 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Select the word segment that substitutes (replaces) the bracketed word segment correctly and completes the sentence meaningfully. Select the
option 'no correction required' if the sentence is correct as given.

Twelve passengers (were arrested in the Netherlands for investigation).
Options :
1.   were arrested in Netherlands for investigation
2.   were arrested in Netherlands under investigation
3.   were arrested in Netherlands for investigation purposes
4.   No correction required


Question Number : 64 Question Id : 103435468 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Select the word segment that substitutes (replaces) the bracketed word segment correctly and completes the sentence meaningfully. Select the
option 'no correction required' if the sentence is correct as given.

China is (now one of the largest trader in the world).
Options :
1.   now one of the larger trader in the world
2.   now one of the largest traders in the world
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 60 of 157
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3.   now one of the largest trader over the world
4.   No correction required


Question Number : 64 Question Id : 103435468 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Select the word segment that substitutes (replaces) the bracketed word segment correctly and completes the sentence meaningfully. Select the
option 'no correction required' if the sentence is correct as given.

China is (now one of the largest trader in the world).
Options :
1.   now one of the larger trader in the world
2.   now one of the largest traders in the world
3.   now one of the largest trader over the world
4.   No correction required


Question Number : 65 Question Id : 103435469 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Fill in the blank with the most appropriate choice.

Meanwhile the number of sixty-five-and-older people will _____________, it will grow almost 55 percent.
Options :
1.   burgeon
2.   belie
3.   bolster
4.   deflect


Question Number : 65 Question Id : 103435469 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Fill in the blank with the most appropriate choice
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 61 of 157
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Text of page 61
Meanwhile the number of sixty-five-and-older people will _____________, it will grow almost 55 percent.
Options :
1.   burgeon
2.   belie
3.   bolster
4.   deflect


Question Number : 66 Question Id : 103435470 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Fill in the blank with the most appropriate choice.

The constant sound of Calcutta is the _____________ of horns and the descant of millions of crows.
Options :
1.   cacophony
2.   calumny
3.   canon
4.   chicanery


Question Number : 66 Question Id : 103435470 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Fill in the blank with the most appropriate choice

The constant sound of Calcutta is the _____________ of horns and the descant of millions of crows.
Options :
1.   cacophony
2.   calumny
3.   canon
4.   chicanery


Question Number : 67 Question Id : 103435471 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 62 of 157
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Text of page 62
Correct Marks : 1 Wrong Marks : 0.25
Some parts of a sentence have been jumbled up, and labelled P, Q, R and S. Select the option that gives the correct sequence in which these parts
can be rearranged to form a meaningful and grammatically correct sentence.

Putin has absolutely

P. no experience in

Q. demonstrates no political

R. acumen in these

S. high politics, and interviews.
Options :
1.   RPSQ
2.   RQSP
3.   PSQR
4.   PRSQ


Question Number : 67 Question Id : 103435471 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Some parts of a sentence have been jumbled up, and labelled P, Q, R and S. Select the option that gives the correct sequence in which these parts
can be rearranged to form a meaningful and grammatically correct sentence.

Putin has absolutely

P. no experience in

Q. demonstrates no political

R. acumen in these

S. high politics, and interviews.
Options :
1.    RPSQ
2.    RQSP
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3.   PSQR
4.   PRSQ


Question Number : 68 Question Id : 103435472 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The question below consist of a set of labelled sentences. Out of four options given, select the most logical order of the sentences which form a
paragraph.

During World War I (1914–18) the British government of India enacted a series of repressive emergency powers that were intended to combat
subversive activities.

P. By the war’s end, expectations were high among the Indian populace that those measures would be eased and that India would be given more
political autonomy.

Q. The Montagu-Chelmsford Report, presented to the British Parliament in 1918, did in fact recommend limited local self-government.

R. The acts were met by widespread anger and discontent among Indians, notably in the Punjab region.

S. Instead, however, the government of India passed what became known as the Rowlett Acts in early 1919, which essentially extended the
repressive wartime measures.

Gandhi in early April called for a one-day general strike throughout the country.
Options :
1.   PQRS
2.   PSQR
3.   PRSQ
4.   PQSR


Question Number : 68 Question Id : 103435472 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The question below consist of a set of labelled sentences. Out of four options given, select the most logical order of the sentences which form a
paragraph.

During World War I (1914–18) the British government of India enacted a series of repressive emergency powers that were intended to combat
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 64 of 157
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subversive activities.

P. By the war’s end, expectations were high among the Indian populace that those measures would be eased and that India would be given more
political autonomy.

Q. The Montagu-Chelmsford Report, presented to the British Parliament in 1918, did in fact recommend limited local self-government.

R. The acts were met by widespread anger and discontent among Indians, notably in the Punjab region.

S. Instead, however, the government of India passed what became known as the Rowlett Acts in early 1919, which essentially extended the
repressive wartime measures.

Gandhi in early April called for a one-day general strike throughout the country.
Options :
1.   PQRS
2.   PSQR
3.   PRSQ
4.   PQSR


Question Number : 69 Question Id : 103435473 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Select the word that is opposite in meaning (ANTONYM) to the word given below.

soporific
Options :
1.   agitated
2.   depressed
3.   exuberant
4.   lethargy


Question Number : 69 Question Id : 103435473 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Select the word that is opposite in meaning (ANTONYM) to the word given below
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 65 of 157
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soporific
Options :
1.   agitated
2.   depressed
3.   exuberant
4.   lethargy


Question Number : 70 Question Id : 103435474 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Select the word that is similar in meaning (SYNONYM) to the word given below.

sparse
Options :
1.   facetious
2.   gainsay
3.   banal
4.   infrequent


Question Number : 70 Question Id : 103435474 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Select the word that is similar in meaning (SYNONYM) to the word given below

sparse
Options :
1.   facetious
2.   gainsay
3.   banal
4.   infrequent


Question Number : 71 Question Id : 103435475 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
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Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Four words are given, out of which only three words are spelt correctly. Choose the incorrectly spelt word.
Options :
1.   deravitive
2.   desultory
3.   discrepancy
4.   diatribe


Question Number : 71 Question Id : 103435475 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Four words are given, out of which only three words are spelt correctly. Choose the incorrectly spelt word.
Options :
1.   deravitive
2.   desultory
3.   discrepancy
4.   diatribe


Question Number : 72 Question Id : 103435476 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Four words are given, out of which only three words are spelt correctly. Choose the one spelt incorrectly.
Options :
1.   irresolute
2.   iresolute
3.   irresulute
4.   iressolute


Question Number : 72 Question Id : 103435476 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
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Four words are given, out of which only three words are spelt correctly. Choose the one spelt incorrectly.
Options :
1.   irresolute
2.   iresolute
3.   irresulute
4.   iressolute


Question Number : 73 Question Id : 103435477 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Select the most appropriate meaning of the given idiom.

Don’t pull all your eggs in one basket
Options :
1.   Do not pull all your resources in one possibility
2.   Going above and beyond whatever is required for the task at hand
3.   A personal intuition you get, especially when feel something may not be right
4.   A place where people gather to buy and sell inexpensive goods


Question Number : 73 Question Id : 103435477 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Select the most appropriate meaning of the given idiom

Don’t pull all your eggs in one basket
Options :
1.   Do not pull all your resources in one possibility
2.   Going above and beyond whatever is required for the task at hand
3.   A personal intuition you get, especially when feel something may not be right
4.   A place where people gather to buy and sell inexpensive goods


Question Number : 74 Question Id : 103435478 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
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Correct Marks : 1 Wrong Marks : 0.25
Select the most appropriate meaning of the given idiom.

Cock and bull story
Options :
1.   An unbelievable tale, untrue story
2.   Living in luxury
3.   A secret policy for an evil purpose
4.   Before the time necessary to do something


Question Number : 74 Question Id : 103435478 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Select the most appropriate meaning of the given idiom

Cock and bull story
Options :
1.   An unbelievable tale, untrue story
2.   Living in luxury
3.   A secret policy for an evil purpose
4.   Before the time necessary to do something


Question Number : 75 Question Id : 103435479 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Select the most appropriate 'one word ' for the expressions given below.

Burial of a corpse in a grave or tomb
Options :
1.   Ghetto
2.   Interment
3.   Inundate
4.   Inveterate
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Question Number : 75 Question Id : 103435479 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Select the most appropriate 'one word ' for the expressions given below

Burial of a corpse in a grave or tomb
Options :
1.   Ghetto
2.   Interment
3.   Inundate
4.   Inveterate
Sub-Section Number :                                                           2
Sub-Section Id :                                                               10343529
Question Shuffling Allowed :                                                   Yes

Question Id : 103435480 Question Type : COMPREHENSION Sub Question Shuffling Allowed : Yes Group Comprehension Questions :
No
Question Numbers : (76 to 80)
A passage is given with 5 questions following it. Read the passage carefully and choose the best answer to each question out of the four
alternatives.

In the 1920s, new technology allowed filmmakers to attach to each film a soundtrack of speech, music and sound effects synchronized with the
action on the screen. These sound films were initially distinguished by calling them talking pictures, or talkies. The next major step in the
development of cinema was the introduction of colour. While the addition of sound to film revolutionized the medium, quickly driving out silent
movies, colour was adopted more gradually. The public was relatively indifferent to colour photography as opposed to black-and-white. But as
colour processes improved and became as affordable as black-and-white film, more and more movies were filmed in colour after the end of
World War 2. As the industry in America came to view colour an essential to attracting audiences in its competition with television, which
remained a black-and-white medium until the mid-60s. By the end of the 1960s, colour had become the norm for filmmakers.
Sub questions

Question Number : 76 Question Id : 103435481 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Prior to the advancement in technology allowing sound to be implemented, what kind of movies would dominate the cinema?
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 70 of 157
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Options :
1.   Silent movies
2.   Talking movies
3.   Colour movies
4.   3D movies

Question Number : 77 Question Id : 103435482 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
It is state in the passage that ____________.
Options :
1.     Colour movies were adapted more gradually when compared to Talkies.
2.     Talkies were adapted more gradually when compared to Colour movies.
3.     Talkies were adapted more gradually when compared to Silent movies.
4.     Silent movies were adapted more gradually when compared to Colour movies.

Question Number : 78 Question Id : 103435483 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
By the end of which war did more and more movies filmed in colour?
Options :
1.   World War 1
2.   World War 2
3.   American Civil War
4.   Vietnam War

Question Number : 79 Question Id : 103435484 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
By which decade had the colour film become the standard norm for filmmakers?
Options :
1.   By the end of 1960s
2.   At the start of 1960s
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3.   By the mid of 1960s
4.   By the end of 1970s

Question Number : 80 Question Id : 103435485 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
According to the passage, which of the following option is incorrect? Choose one option.
Options :
1.   Colour pictures were quickly adopted in the market just like with talkies.
2.   Sound films were initially known as talkies.
3.   Following the development in addition of sound to movies came colour pictures.
4.   Audiences were initially indifferent to colour or black and white films.


Question Id : 103435480 Question Type : COMPREHENSION Sub Question Shuffling Allowed : Yes Group Comprehension Questions :
No
Question Numbers : (76 to 80)
A passage is given with 5 questions following it. Read the passage carefully and choose the best answer to each question out of the four
alternatives

In the 1920s, new technology allowed filmmakers to attach to each film a soundtrack of speech, music and sound effects synchronized with the
action on the screen. These sound films were initially distinguished by calling them talking pictures, or talkies. The next major step in the
development of cinema was the introduction of colour. While the addition of sound to film revolutionized the medium, quickly driving out silent
movies, colour was adopted more gradually. The public was relatively indifferent to colour photography as opposed to black-and-white. But as
colour processes improved and became as affordable as black-and-white film, more and more movies were filmed in colour after the end of
World War 2. As the industry in America came to view colour an essential to attracting audiences in its competition with television, which
remained a black-and-white medium until the mid-60s. By the end of the 1960s, colour had become the norm for filmmakers.
Sub questions

Question Number : 76 Question Id : 103435481 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Prior to the advancement in technology allowing sound to be implemented, what kind of movies would dominate the cinema?
Options :
1.    Silent movies
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 72 of 157
Page 72 of 157
Text of page 72
2.   Talking movies
3.   Colour movies
4.   3D movies

Question Number : 77 Question Id : 103435482 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
It is state in the passage that ____________.
Options :
1.   Colour movies were adapted more gradually when compared to Talkies.
2.   Talkies were adapted more gradually when compared to Colour movies.
3.   Talkies were adapted more gradually when compared to Silent movies.
4.   Silent movies were adapted more gradually when compared to Colour movies.

Question Number : 78 Question Id : 103435483 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
By the end of which war did more and more movies filmed in colour?
Options :
1.   World War 1
2.   World War 2
3.   American Civil War
4.   Vietnam War

Question Number : 79 Question Id : 103435484 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
By which decade had the colour film become the standard norm for filmmakers?
Options :
1.   By the end of 1960s
2.   At the start of 1960s
3.   By the mid of 1960s
4.   By the end of 1970s
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Text of page 73
Question Number : 80 Question Id : 103435485 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
According to the passage, which of the following option is incorrect? Choose one option.
Options :
1.   Colour pictures were quickly adopted in the market just like with talkies.
2.   Sound films were initially known as talkies.
3.   Following the development in addition of sound to movies came colour pictures.
4.   Audiences were initially indifferent to colour or black and white films.



                                                          General Hindi
Group Number :                                                               5
Group Id :                                                                   10343525
Group Maximum Duration :                                                     0
Group Minimum Duration :                                                     0
Show Attended Group? :                                                       No
Edit Attended Group? :                                                       No
Break time :                                                                 0
Group Marks :                                                                20
Is this Group for Examiner? :                                                No



                                                          General Hindi
Section Id :                                                                 10343525
Section Number :                                                             1
Section type :                                                               Online
Mandatory or Optional :                                                      Mandatory
Number of Questions :                                                        16
Number of Questions to be attempted :                                        16
Section Marks :                                                              20
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Enable Mark as Answered Mark for Review and Clear Response :              Yes
Sub-Section Number :                                                      1
Sub-Section Id :                                                          10343530
Question Shuffling Allowed :                                              Yes

Question Number : 81 Question Id : 103435486 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत      म ,चार िवक   ों म से उस िवक   का चयन कर जो िदए गए संिध - िव े द श   के सही संिध का िवक   है |

रा + अिभषेक
Options :
1.   रा   ाभीषेक
2.   रा   ाभषेक
3.   रा   िभषेक
4.   रा   ािभषेक


Question Number : 81 Question Id : 103435486 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत      म ,चार िवक   ों म से उस िवक   का चयन कर जो िदए गए संिध - िव े द श   के सही संिध का िवक   है |

रा + अिभषेक
Options :
1.   रा   ाभीषेक
2.   रा   ाभषेक
3.   रा   िभषेक
4.   रा   ािभषेक


Question Number : 82 Question Id : 103435487 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
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िन िल खत         म ,चार िवक   ों म से उस िवक   का चयन कर जो उपसग श     का सही िवक    है |
Options :
1.   िनठ     ा
2.   चमकदार
3.   अंिकत
4.   गोलंदाज़


Question Number : 82 Question Id : 103435487 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत         म ,चार िवक   ों म से उस िवक   का चयन कर जो उपसग श     का सही िवक    है |
Options :
1.   िनठ     ा
2.   चमकदार
3.   अंिकत
4.   गोलंदाज़


Question Number : 83 Question Id : 103435488 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत         म ,चार िवक   ों म से उस िवक   का चयन कर जो िदए गए संिध श   के सही संिध िव े द श   का िवक   है |

वाड् मय-
Options :
1.   व + मय
2.   वां +मय
3.   वाक् + मय
4.   वाग + माय


Question Number : 83 Question Id : 103435488 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
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Text of page 76
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत          म ,चार िवक   ों म से उस िवक   का चयन कर जो िदए गए संिध श   के सही संिध िव े द श   का िवक   है |

वाड् मय-
Options :
1.   व + मय
2.   वां +मय
3.   वाक् + मय
4.   वाग + माय


Question Number : 84 Question Id : 103435489 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत          म ,चार िवक   ों म से उस िवक   का चयन कर जो शु   श   का सही िवक    है |
Options :
1.   क       दायक
2.   िम      री
3.   दू भा
4.   िवपि


Question Number : 84 Question Id : 103435489 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत          म ,चार िवक   ों म से उस िवक   का चयन कर जो शु   श   का सही िवक    है |
Options :
1.   क       दायक
2.   िम      री
3.   दू भा
4.   िवपि


Question Number : 85 Question Id : 103435490 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 77 of 157
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Text of page 77
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत        म ,चार िवक    ों म से उस िवक   का चयन कर जो शु   वा    का सही िवक   है |
Options :
1.    उसके बाद वे वापस लौट आए |
2.    जो धन का भूखा है , वो साधु नही है |
3.    सारे दे श भर म रोष कट िकया गया |
4.    हमारे नाव िकनारे से लगा |


Question Number : 85 Question Id : 103435490 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत        म ,चार िवक    ों म से उस िवक   का चयन कर जो शु   वा    का सही िवक   है |
Options :
1.    उसके बाद वे वापस लौट आए |
2.    जो धन का भूखा है , वो साधु नही है |
3.    सारे दे श भर म रोष कट िकया गया |
4.    हमारे नाव िकनारे से लगा |


Question Number : 86 Question Id : 103435491 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत        म ,चार िवक    ों म से उस िवक   का चयन कर जो िदए गए श     यु   के सही अथ का िवक   है |

इ दु -इ दु र
Options :
1.    सुगंध,दू सरा
2.    भलाई ,दु सरा
3.    गहना ,चूहा
4.    च मा , चूहा
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Text of page 78
Question Number : 86 Question Id : 103435491 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत             म ,चार िवक   ों म से उस िवक   का चयन कर जो िदए गए श    यु   के सही अथ का िवक   है |

इ दु -इ दु र
Options :
1.    सुगंध,दू सरा
2.    भलाई ,दु सरा
3.    गहना ,चूहा
4.    च मा , चूहा


Question Number : 87 Question Id : 103435492 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत             म ,चार िवक   ों म से उस िवक   का चयन कर जो िदए गए वा   ंश के िलए एक श   का सही िवक    हो |

उ र िदशा-
Options :
1.    उदीची
2.    अधेर
3.    उ गामी
4.    उ        वास


Question Number : 87 Question Id : 103435492 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत             म ,चार िवक   ों म से उस िवक   का चयन कर जो िदए गए वा   ंश के िलए एक श   का सही िवक    हो |

उ र िदशा-
Options :
1.    उदीची
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 79 of 157
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Text of page 79
2.   अधेर
3.   उ गामी
4.   उ      वास


Question Number : 88 Question Id : 103435493 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत          म ,चार िवक   ों म से उस िवक   का चयन कर जो सदै व ब वचन वाले श   ह|
Options :
1.   सेना
2.   समाचार
3.   गु     ा
4.   कमेटी


Question Number : 88 Question Id : 103435493 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत          म ,चार िवक   ों म से उस िवक   का चयन कर जो सदै व ब वचन वाले श   ह|
Options :
1.   सेना
2.   समाचार
3.   गु     ा
4.   कमेटी


Question Number : 89 Question Id : 103435494 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत          म ,चार िवक   ों म से उस िवक   का चयन कर जो उ म पु ष वाचक सवनाम का सही िवक   है |
Options :
1.   (वह) कल िव ालय आयेगा |
2.   िजसे आना था ,( वह ) आ गया |
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 80 of 157
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3.   ( मुझे )    ेिनश भाषा नहीं आती |
4.   ( तु ारे ) घर कौन जगह पर है |


Question Number : 89 Question Id : 103435494 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत         म ,चार िवक   ों म से उस िवक   का चयन कर जो उ म पु ष वाचक सवनाम का सही िवक         है |
Options :
1.   (वह) कल िव ालय आयेगा |
2.   िजसे आना था ,( वह ) आ गया |
3.   ( मुझे )    ेिनश भाषा नहीं आती |
4.   ( तु ारे ) घर कौन जगह पर है |


Question Number : 90 Question Id : 103435495 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत         म ,चार िवक   ों म से उस िवक   का चयन कर जो िदए गए वा   के काल के भेद का सही िवक          है |

राधा ने अभी खाना खाया है ।
Options :
1.   आस भूतकाल
2.   सामा       वतमान काल
3.   पूणभूत काल
4.   संभा       भिव त्


Question Number : 90 Question Id : 103435495 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत         म ,चार िवक   ों म से उस िवक   का चयन कर जो िदए गए वा   के काल के भेद का सही िवक          है |

राधा ने अभी खाना खाया है ।
Options :
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 81 of 157
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1.   आस भूतकाल
2.   सामा     वतमान काल
3.   पूणभूत काल
4.   संभा    भिव त्


Question Number : 91 Question Id : 103435496 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत          म ,चार िवक   ों म से उस िवक   का चयन कर जो िदए गए वा   के भेद का सही िवक   है |

यिद प र म करोगे तो, उ ीण हो जाओगे।
Options :
1.   संदेहवाचक वा
2.   संयु    वा
3.   सरल वा
4.   िम वा


Question Number : 91 Question Id : 103435496 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत          म ,चार िवक   ों म से उस िवक   का चयन कर जो िदए गए वा   के भेद का सही िवक   है |

यिद प र म करोगे तो, उ ीण हो जाओगे।
Options :
1.   संदेहवाचक वा
2.   संयु    वा
3.   सरल वा
4.   िम वा


Question Number : 92 Question Id : 103435497 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 82 of 157
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िन िल खत       म ,चार िवक     ों म से उस िवक      का चयन कर जो िवराम िच यु     वा     का सही िवक   हो |
Options :
1.   सड़कों पर दु कानों के बाहर , रे लवे     े शनों , वाहनों ,खेल आयोजनों आिद तमाम अवसरों पर िव ापन की आव    कता होती है "
2.   सड़कों पर ,दु कानों के बाहर , रे लवे    े शनों , वाहनों ,खेल आयोजनों आिद तमाम अवसरों पर िव ापन की आव     कता होती है |
3.   सड़कों पर ,दु कानों के बाहर , रे लवे    े शनों , वाहनों ,खेल आयोजनों आिद तमाम अवसरों पर िव ापन की आव     कता होती है
4.   सड़कों पर दु कानों के बाहर रे लवे      े शनों , वाहनों खेल आयोजनों आिद तमाम अवसरों पर िव ापन की आव     कता होती है |


Question Number : 92 Question Id : 103435497 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत       म ,चार िवक     ों म से उस िवक      का चयन कर जो िवराम िच यु     वा     का सही िवक   हो |
Options :
1.   सड़कों पर दु कानों के बाहर , रे लवे     े शनों , वाहनों ,खेल आयोजनों आिद तमाम अवसरों पर िव ापन की आव    कता होती है "
2.   सड़कों पर ,दु कानों के बाहर , रे लवे    े शनों , वाहनों ,खेल आयोजनों आिद तमाम अवसरों पर िव ापन की आव     कता होती है |
3.   सड़कों पर ,दु कानों के बाहर , रे लवे    े शनों , वाहनों ,खेल आयोजनों आिद तमाम अवसरों पर िव ापन की आव     कता होती है
4.   सड़कों पर दु कानों के बाहर रे लवे      े शनों , वाहनों खेल आयोजनों आिद तमाम अवसरों पर िव ापन की आव     कता होती है |


Question Number : 93 Question Id : 103435498 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत       म ,चार िवक     ों म से उस िवक      का चयन कर जो िवराम िच यु     वा     का सही िवक   हो |
Options :
1.    ेरणा , ो ाहन िनरी ण और िनगरानी के िलए कमचा रयों की िनयु           होने लगी |
2.    ेरणा , ो ाहन ,िनरी ण और िनगरानी के िलए कमचा रयों की िनयु           होने लगी
3.    ेरणा , ो ाहन ,िनरी ण और िनगरानी के िलए कमचा रयों की िनयु           होने लगी "
4.    ेरणा , ो ाहन ,िनरी ण और िनगरानी के िलए कमचा रयों की िनयु           होने लगी |


Question Number : 93 Question Id : 103435498 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत       म ,चार िवक     ों म से उस िवक      का चयन कर जो िवराम िच यु     वा     का सही िवक   हो |
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 83 of 157
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Options :
1.    ेरणा , ो ाहन िनरी ण और िनगरानी के िलए कमचा रयों की िनयु      होने लगी |
2.    ेरणा , ो ाहन ,िनरी ण और िनगरानी के िलए कमचा रयों की िनयु     होने लगी
3.    ेरणा , ो ाहन ,िनरी ण और िनगरानी के िलए कमचा रयों की िनयु     होने लगी "
4.    ेरणा , ो ाहन ,िनरी ण और िनगरानी के िलए कमचा रयों की िनयु     होने लगी |


Question Number : 94 Question Id : 103435499 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत       म ,चार िवक   ों म से उस िवक   का चयन कर जो िदए गए मुहावरे के सही अथ वाला िवक   है |

नु ाचीनी करना -
Options :
1.   आलोचना करना
2.          बोलना
3.   किठन काय करना
4.   िबखर जाना


Question Number : 94 Question Id : 103435499 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत       म ,चार िवक   ों म से उस िवक   का चयन कर जो िदए गए मुहावरे के सही अथ वाला िवक   है |

नु ाचीनी करना -
Options :
1.   आलोचना करना
2.          बोलना
3.   किठन काय करना
4.   िबखर जाना


Question Number : 95 Question Id : 103435500 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 84 of 157
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Correct Marks : 1 Wrong Marks : 0.25
िन िल खत      म ,चार िवक   ों म से उस िवक    का चयन कर जो िदए गए लोको      के सही अथ वाला िवक     है |

अमानत म खयानत-
Options :
1.   आमदनी से अिधक खच
2.   िकसी के पास अमानत के      प म रखी कोई व    ु खच कर दे ना
3.   प रणाम अ     ा हो जाए तो सब कुछ माना जाता है
4.   सदा वतमान की ही िच ा करनी चािहए


Question Number : 95 Question Id : 103435500 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत      म ,चार िवक   ों म से उस िवक    का चयन कर जो िदए गए लोको      के सही अथ वाला िवक     है |

अमानत म खयानत-
Options :
1.   आमदनी से अिधक खच
2.   िकसी के पास अमानत के      प म रखी कोई व    ु खच कर दे ना
3.   प रणाम अ     ा हो जाए तो सब कुछ माना जाता है
4.   सदा वतमान की ही िच ा करनी चािहए
Sub-Section Number :                                                       2
Sub-Section Id :                                                           10343531
Question Shuffling Allowed :                                               Yes

Question Id : 103435501 Question Type : COMPREHENSION Sub Question Shuffling Allowed : Yes Group Comprehension Questions :
No
Question Numbers : (96 to 100)
नीचे िदए गए ग ां श को   ानपूवक पढ़ और पूछे गए        ों का सव म उ र चुन I

शिन अ ंत ठं डा ह है I शिन का िदन हमारे िदन से छोटा होता है I शिन के वायुमंडल का तापमान शू से १५० िड ी सटी ेड नीचे रहता है I अतः यहाँ जीवन
संभव नहीं है I वै ािनक खोजों के आधार पर शिन के उप हों की सं ा स ह हो गयी है I शिन का सबसे बड़ा च टाइटन है I टाइटन की अद् भुत चीज़ इसका
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 85 of 157
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वायुमंडल है इसके वायुमंडल म मीथेन गैस पया मा ा है I इस पर मीथेन ,पानी की तरह मानी जा सकती है I शनी को दू रबीन से दे खा जाए तो इसके चारों ओर
वलय या घेरे िदखाई दे ते ह I इन वलयों से इसकी सु रता काफी बढ़ जाित है I इन वलयों की खोज गैलीिलओ ने की थी I
Sub questions

Question Number : 96 Question Id : 103435502 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
शिन के उप हों की सं        ा िकतनी है ?
Options :
1.   बीस
2.   दो
3.   चार
4.   स ह

Question Number : 97 Question Id : 103435503 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
शिन पर जीवन         ूँ संभव नहीं है ?
Options :
1.   वहाँ ू र दे व ह
2.   ब त गरमी है
3.   ब त ठं डा है
4.   ब त अँधेरा है

Question Number : 98 Question Id : 103435504 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
'वलय ' का सही पयायवाची श                ा है ?
Options :
1.   कण
2.   छ     ा
3.   िवकार
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 86 of 157
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4.   खोज

Question Number : 99 Question Id : 103435505 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
शिन ह म      ास   व नहीं है ?
Options :
1.   पानी
2.   जीवन
3.   रोशनी
4.   िम ी

Question Number : 100 Question Id : 103435506 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
अनु े द के िलए उिचत शीषक दीिजये |
Options :
1.   टाइटन की खोज
2.   शिन का वलय
3.   गैलीिलयो की खोज
4.   शिन ह


Question Id : 103435501 Question Type : COMPREHENSION Sub Question Shuffling Allowed : Yes Group Comprehension Questions :
No
Question Numbers : (96 to 100)
नीचे िदए गए ग ां श को   ानपूवक पढ़ और पूछे गए     ों का सव म उ र चुन I

शिन अ ंत ठं डा ह है I शिन का िदन हमारे िदन से छोटा होता है I शिन के वायुमंडल का तापमान शू से १५० िड ी सटी ेड नीचे रहता है I अतः यहाँ जीवन
संभव नहीं है I वै ािनक खोजों के आधार पर शिन के उप हों की सं ा स ह हो गयी है I शिन का सबसे बड़ा च टाइटन है I टाइटन की अद् भुत चीज़ इसका
वायुमंडल है इसके वायुमंडल म मीथेन गैस पया मा ा है I इस पर मीथेन ,पानी की तरह मानी जा सकती है I शनी को दू रबीन से दे खा जाए तो इसके चारों ओर
वलय या घेरे िदखाई दे ते ह I इन वलयों से इसकी सु रता काफी बढ़ जाित है I इन वलयों की खोज गैलीिलओ ने की थी I
Sub questions
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 87 of 157
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Text of page 87
Question Number : 96 Question Id : 103435502 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
शिन के उप हों की सं        ा िकतनी है ?
Options :
1.   बीस
2.   दो
3.   चार
4.   स ह

Question Number : 97 Question Id : 103435503 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
शिन पर जीवन         ूँ संभव नहीं है ?
Options :
1.   वहाँ ू र दे व ह
2.   ब त गरमी है
3.   ब त ठं डा है
4.   ब त अँधेरा है

Question Number : 98 Question Id : 103435504 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
'वलय ' का सही पयायवाची श                ा है ?
Options :
1.   कण
2.   छ     ा
3.   िवकार
4.   खोज

Question Number : 99 Question Id : 103435505 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 88 of 157
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Text of page 88
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
शिन ह म      ास   व नहीं है ?
Options :
1.   पानी
2.   जीवन
3.   रोशनी
4.   िम ी

Question Number : 100 Question Id : 103435506 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
अनु े द के िलए उिचत शीषक दीिजये |
Options :
1.   टाइटन की खोज
2.   शिन का वलय
3.   गैलीिलयो की खोज
4.   शिन ह



                                                        Discipline1
Group Number :                                                        6
Group Id :                                                            10343526
Group Maximum Duration :                                              0
Group Minimum Duration :                                              0
Show Attended Group? :                                                No
Edit Attended Group? :                                                No
Break time :                                                          0
Group Marks :                                                         20
Is this Group for Examiner? :                                         No
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 89 of 157
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Discipline1
Section Id :                                                            10343526
Section Number :                                                        1
Section type :                                                          Online
Mandatory or Optional :                                                 Mandatory
Number of Questions :                                                   20
Number of Questions to be attempted :                                   20
Section Marks :                                                         20
Enable Mark as Answered Mark for Review and Clear Response :            Yes
Sub-Section Number :                                                    1
Sub-Section Id :                                                        10343532
Question Shuffling Allowed :                                            Yes

Question Number : 101 Question Id : 103435507 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is measure of ability of an atom to attract electrons?
Options :
1.   Electron gain enthalpy
2.   Electronegativity
3.   Ionization enthalpy
4.   Electropositivity


Question Number : 101 Question Id : 103435507 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा परमाणु के इले   ॉनों को आकिषत करने की मता का माप है ?
Options :
1.   इले   ॉन ल   पूण ऊ       ा
2.   वैद्युतीयऋणा कता
3.   आयनन पूण ऊ      ा
4.   िवद् युत्-घना कता
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 90 of 157
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Question Number : 102 Question Id : 103435508 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
In a condition where "Z" is group number, S equals the number of shared electrons, and U is the number of unshared electrons. What will be the
formula for Formal charge?
Options :
1.   Z-S÷2-U
2.   Z+U-S÷2
3.   U+S÷2-Z
4.   Z+U+S÷2


Question Number : 102 Question Id : 103435508 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
ऐसी थित म जहां "Z" समूह सं     ा है , S साझा इले   ॉनों की सं   ा के बराबर है , और U साझा नहीं िकए गए इले   ॉनों की सं   ा है । िनयमिन आवेश का
सू    ा होगा?
Options :
1.   Z-S÷2-U
2.   Z+U-S÷2
3.   U+S÷2-Z
4.   Z+U+S÷2


Question Number : 103 Question Id : 103435509 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The following quantum numbers are possible for many orbitals : n=4, l=2, m=+2
Options :
1.   1
2.   3
3.   4
4.   2
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Question Number : 103 Question Id : 103435509 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
कई क क के िलए िन िल खत           ां टम सं   ाएँ संभव ह: n=4, l=2, m=+2
Options :
1.    1
2.    3
3.    4
4.    2


Question Number : 104 Question Id : 103435510 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
What is meant by Triple point of water?
Options :
1.   When all the three states of water co-exist
2.   When water boils at 300 degree Celsius
3.   When water exists as ice
4.   When water exits in its elemental form


Question Number : 104 Question Id : 103435510 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
पानी के ि गुण िबंदु से   ा ता य है ?
Options :
1.    जब जल की तीनों अव थाएं सह-अ             म हों
2.    जब पानी 300 िड ी से      यस पर उबलता है
3.    जब पानी बफ के      प म मौजूद होता है
4.    जब पानी अपने मौिलक        प म मौजूद होता है
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Question Number : 105 Question Id : 103435511 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following shows ferroelectrical property?
Options :
1.   Barium titanate
2.   Gallium titanate
3.   Lead zirconate
4.   Vanadium oxide


Question Number : 105 Question Id : 103435511 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन लौहिवद् युत गुण दिशत करता है ?
Options :
1.   बे रयम िटटानेट
2.   गैिलयम िटटानेट
3.   लीड िजरकोनेट
4.   वनिडयम ऑ         ाइड


Question Number : 106 Question Id : 103435512 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Name the Instrumental technique used to demonstrate the presence of functional group :
Options :
1.   Alpha Rays spectroscopy
2.   Xray spectroscopy
3.   Infrared spectroscopy
4.   Beta - spectroscopy


Question Number : 106 Question Id : 103435512 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
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Correct Marks : 1 Wrong Marks : 0.25
काया क समूह की उप थित को दिशत करने के िलए यु              सहायक यं का नाम बताइए:
Options :
1.   अ      ा िकरण                   े        ो     ोपी
2.   ए     िकरणे             े           ो        ोपी
3.   अवर             े           ो           ोपी
4.   बीटा -      े       ो           ोपी


Question Number : 107 Question Id : 103435513 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The anti addition of a halogen to an alkene provides us with an example of what is called :
Options :
1.   Stereospecific
2.   Chiral
3.   Enantiomers
4.   Diaxial


Question Number : 107 Question Id : 103435513 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
ऐ ीन म है लोजन का एं टी-एिडशन हम एक उदाहरण दान करता है िजसे कहा जाता है :
Options :
1.       ी रयो       ेिसिफक
2.   काइरल
3.       ितिबंब (एनंटीओमर)
4.   ि अ ीय (डीए                             अल)


Question Number : 108 Question Id : 103435514 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
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Who shared the 1996 noble prize in Chemistry for discovery of buckminsterfullerene C?
Options :
1.   Kroto
2.   Frindrich
3.   August kekule
4.     Debye


Question Number : 108 Question Id : 103435514 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िकसने बकिमन रफुलरीन C की खोज के िलए रसायन िव ान म 1996 का नोबल पुर            ार साझा िकया?
Options :
1.       ोटो
2.       डीच
3.     आग       केकुले
4.     दे बाई


Question Number : 109 Question Id : 103435515 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
What is the minimum temperature at which the process will be spontaneous, when Δ S = 120 Jk-1 mol-1 and ΔH= 180 KJ ?
Options :
1.   666k
2.   1000k
3.   1510k
4.   798k


Question Number : 109 Question Id : 103435515 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
     ूनतम तापमान     ा है िजस पर ि या सहज होगी, जब Δ S = 120 Jk-1 mol-1 और ΔH= 180 KJ?
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Options :
1.   666k
2.   1000k
3.   1510k
4.   798k


Question Number : 110 Question Id : 103435516 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The mass of 1 x 10²² molecules of Na₂SO₄ :
Options :
1.   3.1g
2.   2.36g
3.   2.7g
4.   4.3g


Question Number : 110 Question Id : 103435516 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Na₂SO₄ के 1 x 10²² अणुओं का   मान:
Options :
1.   3.1g
2.   2.36g
3.   2.7g
4.   4.3g


Question Number : 111 Question Id : 103435517 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Calculate the freezing point of a solution of NaCl in water which boils at 117.2 degree.
Options :
1.   -62.48
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2.   46.5
3.   -65.5
4.   -87.4


Question Number : 111 Question Id : 103435517 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
पानी म NaCl के िवलयन के िहमां क की गणना कर जो 117.2 िड ी पर उबलता है ।
Options :
1.   -62.48
2.   46.5
3.   -65.5
4.   -87.4


Question Number : 112 Question Id : 103435518 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is correct order of stability?
Options :
1.   SF6<SeF6<TeF6
2.   TeF6<SeF6>SF6
3.   Te6<Se6<SF6
4.   TeF6>SeF6<SF6


Question Number : 112 Question Id : 103435518 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा थरता का सही      म है ?
Options :
1.   SF6<SeF6<TeF6
2.   TeF6<SeF6>SF6
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3.   Te6<Se6<SF6
4.   TeF6>SeF6<SF6


Question Number : 113 Question Id : 103435519 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
H2S is also known as:
Options :
1.   Sulphonated hydrogen
2.   Sulphureted hydrogen
3.   Sulphonic Hydrogen
4.   Sulphurated Hydrides


Question Number : 113 Question Id : 103435519 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
H2S िन के         प म भी जाना जाता है :
Options :
1.   स      ोनेटेड हाइडोजन
2.   स      रयु     हाइडोजन
3.   स      ोिनक हाइडोजन
4.   स      ूरेटे ड हाइडाइड् स


Question Number : 114 Question Id : 103435520 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
By which process Chlorobenzene is prepared commercially?
Options :
1.   Raschig process
2.   Swarts process
3.   Finkelstein process
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4.   Sandmeyer process


Question Number : 114 Question Id : 103435520 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िकस ि या ारा         ोरोबजीन   ावसाियक       प से तैयार िकया जाता है ?
Options :
1.   रा चग ि या
2.      ाट् स ि या
3.   िफंकेल ाइन ि या
4.   सडमेयर ि या


Question Number : 115 Question Id : 103435521 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
In which reaction the silver salt of carboxylic acids on reaction with Br2 in refluxing CCl4 undergoes decarboxylation to form alkyl and aryl
bromide?
Options :
1.   Borodine-Hunsdiecker reaction
2.   Saytzeff reaction
3.   Hofmann elimination
4.   Swarts reaction


Question Number : 115 Question Id : 103435521 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िकस अिभि या म काब         िलक अ      का िस     र सॉ    Br2 के साथ र      ंग CCl4 म अिभि या करने पर ए       ाइल और ए रल ोमाइड बनाने के िलए
डीकाबा लेशन से गुजरता है ?
Options :
1.   बोरोडाइन-हं सडीकर अिभि या
2.   से जेफ अिभि या
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3.   हॉफमैन उ ूलन
4.     ाट् स अिभि या


Question Number : 116 Question Id : 103435522 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
96500 C of electricity liberates from CuSO4
Options :
1.   63.5g of Cu
2.   31.74g of Cu
3.   96500g of Cu
4.   100g of Cu


Question Number : 116 Question Id : 103435522 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
CuSO4 से 96500 C िबजली मु   होती है
Options :
1.   Cu का 63.5g
2.   Cu का 31.74g
3.   Cu का 96500g
4.   Cu का 100g


Question Number : 117 Question Id : 103435523 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is not a type of electrode ?
Options :
1.   gas electrode
2.   calomel electrode
3.   redox electrode
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4.   concrete electrode


Question Number : 117 Question Id : 103435523 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा इले    ोड का कार नहीं है ?
Options :
1.   गैस इले     ोड
2.   कैलोमेल इले       ोड
3.   रे डॉ     इले    ोड
4.   कं ीट इले        ोड


Question Number : 118 Question Id : 103435524 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The IUPAC name of K₃[Co(CN)₅NO].
Options :
1.   potassium pentacyanonitrosocobaltate(II)
2.   potassium cyanopentanitrocobalt(lll)
3.   potassiumpentanitrocobalt(lll)
4.   Potassium pentacyano nitrosyl cobaltate(II)


Question Number : 118 Question Id : 103435524 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
K₃[Co(CN)₅NO] का IUPAC नाम।
Options :
1.   पोटै िशयम पटासायनोिनटोसोकोबा े ट (ll)
2.   पोटै िशयम सायनोपटैिनटोकोबा     (lll)
3.   पोटै िशयमपटािनटोकोबा    (ll)
4.   पोटै िशयम पटासायनो नाइटोिसल कोबा े ट (II)
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Question Number : 119 Question Id : 103435525 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Name the reaction in which triphenylmethyl radical is prepared by treating triphenylmethyl chloride with a metal like Silver or Zinc in presence
of diethyl ether or benzene?
Options :
1.    Gattermann reaction
2.    Sandmeyer reaction
3.    Gomberg- Free radical reaction
4.    Coupling reaction


Question Number : 119 Question Id : 103435525 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
उस अिभि या का नाम बताइए िजसम डाइइथाइल इथर या बजीन की उप थित म चां दी या ज               ा जैसे धातु के साथ टाइफेिनलमेथाइल     ोराइड का उपचार
करके टाइफेिनलमेथाइल रे िडकल तैयार िकया जाता है ?
Options :
1.   गैटरमैन अिभि या
2.   सडमेयर अिभि या
3.   गो ग- मु     मूलक अिभि या
4.   यु न अिभि या


Question Number : 120 Question Id : 103435526 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is test for secondary amine?
Options :
1.   carbylamine test
2.   azo dye test
3.   Liebermann nitroso test
4.   solubility test
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Question Number : 120 Question Id : 103435526 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा ि तीयक एमीन के िलए परी ण है ?
Options :
1.   कारिबलामाइन परी ण
2.   एज़ो डाई परी ण
3.   िलबरमैन नाइटोसो परी ण
4.   घुलनशीलता परी ण



                                                        Discipline2
Group Number :                                                        7
Group Id :                                                            10343527
Group Maximum Duration :                                              0
Group Minimum Duration :                                              0
Show Attended Group? :                                                No
Edit Attended Group? :                                                No
Break time :                                                          0
Group Marks :                                                         20
Is this Group for Examiner? :                                         No



                                                        Discipline2
Section Id :                                                          10343527
Section Number :                                                      1
Section type :                                                        Online
Mandatory or Optional :                                               Mandatory
Number of Questions :                                                 20
Number of Questions to be attempted :                                 20
Section Marks :                                                       20
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Enable Mark as Answered Mark for Review and Clear Response :          Yes
Sub-Section Number :                                                  1
Sub-Section Id :                                                      10343533
Question Shuffling Allowed :                                          Yes

Question Number : 121 Question Id : 103435527 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which amines are potent carcinogens?
Options :
1.   nitroamines
2.   amine
3.   nitrosomethylamine
4.   nitrosoamines


Question Number : 121 Question Id : 103435527 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
कौन से एमीन भावकारी कसरजनक ह?
Options :
1.   नाइटोअमी
2.   अमाइन
3.   नाइटोसोमेथाइलमाइन
4.   नाइटोसोअमाइन


Question Number : 122 Question Id : 103435528 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Radioactive disintegration is which order reaction?
Options :
1.   zero order
2.   First order
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3.   second order
4.   pseudo first order


Question Number : 122 Question Id : 103435528 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
रे िडयोधम िवघटन िकस कोिट की अिभि या है ?
Options :
1.   शू   कोिट
2.    थम कोिट
3.   दू सरा कोिट
4.   छ     थम कोिट


Question Number : 123 Question Id : 103435529 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Formula for activation energy:
Options :
1.   Threshold energy - average kinetic energy of the reactants
2.   Threshold energy + average kinetic energy of the reactants
3.   Average kinetic energy - threshold energy
4.   transition energy - threshold energy


Question Number : 123 Question Id : 103435529 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
सि यण ऊजा का सू :
Options :
1.    भावसीमा ऊजा ( ेसहो    एनज ) - अिभकारकों की औसत गितज ऊजा
2.    भावसीमा ऊजा ( ेसहो    एनज ) + अिभकारकों की औसत गितज ऊजा
3.   औसत गितज ऊजा - भावसीमा ऊजा ( ेसहो       एनज )
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4.   सं मण ऊजा (टां जीशन एनज ) - भावसीमा ऊजा ( ेसहो      एनज )


Question Number : 124 Question Id : 103435530 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
________ are lipids found in the membrane of animal muscle and nerve cell.
Options :
1.   mycricyl
2.   cephalin
3.   cerebrosides
4.   lecithin


Question Number : 124 Question Id : 103435530 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
________ पशु पेशी और तंि का कोिशका की िझ   ी म पाए जाने वाले िलिपड ह।
Options :
1.   माइि िसल
2.   िसफेिलन
3.   सेरे ोसाइड् स
4.   लेिसिथन


Question Number : 125 Question Id : 103435531 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Pellagra diseases is caused by deficiency of:
Options :
1.    vitamin c
2.    vitamin B3
3.   vitamin A
4.   vitamin D
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Question Number : 125 Question Id : 103435531 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
पॅला ा रोग िन की कमी से होता है :
Options :
1.   िवटािमन c
2.   िवटािमन B3
3.   िवटािमन A
4.   िवटािमन D


Question Number : 126 Question Id : 103435532 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is not a part of quantum mechanics?
Options :
1.   electromagnetism
2.   nuclear force
3.   gravity
4.   momentum


Question Number : 126 Question Id : 103435532 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा     ां टम यां ि की का िह   ा नहीं है ?
Options :
1.   िवद् यु चु   क
2.   नािभकीय बल
3.   गु      ाकषण
4.   संवेग
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Question Number : 127 Question Id : 103435533 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which is the most powerful spectroscopy that can give you a great idea about the structure of organic molecules?
Options :
1.   NMR
2.   Xray spectroscopy
3.   Infrared spectroscopy
4.   UV Ray Spectroscopy


Question Number : 127 Question Id : 103435533 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
कौन सी सबसे श           शाली           े    ो   ोपी है जो आपको काबिनक अणुओं की संरचना के बारे म उपयु   िवचार दे सकती है ?
Options :
1.   NMR
2.   ए     िकरणे        े       ो     ोपी
3.   अवर        े       ो       ोपी
4.   UV िकरणे       े       ो       ोपी


Question Number : 128 Question Id : 103435534 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is formula of Calaverite?
Options :
1.   AuTe2
2.   AuTe4
3.   AuTe3
4.   AuTe5


Question Number : 128 Question Id : 103435534 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 108 of 157
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Text of page 108
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन कैलावेराइट का सू है ?
Options :
1.   AuTe2
2.   AuTe4
3.   AuTe3
4.   AuTe5


Question Number : 129 Question Id : 103435535 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which compound is used to estimate the hardness of water?
Options :
1.   EDTA
2.   BHA
3.   BHT
4.   ETDA


Question Number : 129 Question Id : 103435535 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िकस यौिगक का उपयोग पानी की कठोरता का अनुमान लगाने के िलए िकया जाता है ?
Options :
1.   EDTA
2.   BHA
3.   BHT
4.   ETDA


Question Number : 130 Question Id : 103435536 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 109 of 157
Page 109 of 157
Text of page 109
Correct Marks : 1 Wrong Marks : 0.25
What is the shape of compound : [Cr(NH3)6]3+ ?
Options :
1.   Square planner
2.   Linear
3.   Tetrahedral
4.   Octahedral


Question Number : 130 Question Id : 103435536 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
यौिगक : [Cr(NH3)6]3+ का आकार      ा है ?
Options :
1.         ायर   ानर
2.   रै खक
3.   चतु     लकीय (टे टहीडल)
4.   अ भुजाकार (आ       हीडल)


Question Number : 131 Question Id : 103435537 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Name the reaction:
Phenol + Benzoyl Chloride in the presence of NaOH gives Phenyl benzoate + hydrochloric acid
Options :
1.   Elbs persulphate oxidation
2.   Reimer - Tiemann reaction
3.   Schotten - Baumann reaction
4.   Liebermann nitroso reaction


Question Number : 131 Question Id : 103435537 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 110 of 157
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Correct Marks : 1 Wrong Marks : 0.25
अिभि या का नाम बताइए:
NaOH की उप थित म फेनोल + बजॉयल         ोराइड, िफनाइल बज़ोएट + हाइडो   ो रक अ   दे ता है
Options :
1.   ए     परस े ट ऑ         ीकरण
2.   रीमर - टायमैन अिभि या
3.   शोटे न - बाउमन अिभि या
4.   िलबरमैन नाइटोसो अिभि या


Question Number : 132 Question Id : 103435538 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
 ________ can give precise structural data for some molecules.
Options :
1.   X-ray crystallography
2.   Infrared spectroscopy
3.   gamma ray crystallography
4.   chromatography


Question Number : 132 Question Id : 103435538 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
________ कुछ अणुओं के िलए सटीक संरचना क डे टा दे सकता है ।
Options :
1.   ए   -िकरण ि       लकी
2.   अवर      े    ो   ोपी
3.   गामा िकरण ि       लकी
4.   वणलेखन


Question Number : 133 Question Id : 103435539 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 111 of 157
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Text of page 111
Correct Marks : 1 Wrong Marks : 0.25
________ is the continuous spectrum of energy-bearing waves ranging from extremely short waves, such as high-energy X-rays .
Options :
1.   Qualitative analysis
2.   Quantitative analysis
3.   Analysis
4.   Spectroscopy


Question Number : 133 Question Id : 103435539 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
_______ अ ंत छोटी तरं गों, जैसे उ -ऊजा ए      -िकरण से लेकर ऊजा-वहन करती तरं गों का िनरं तर     े   म है ।
Options :
1.   गुणा क िव            ेषण
2.   मा ा क िव            ेषण
3.   िव       ेषण
4.        े   ो     ोपी


Question Number : 134 Question Id : 103435540 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
which connect an atom with the next in a continuous network, involve any element of the periodic table and the resulting bond-types vary mostly
from ionic to completely covalent?
Options :
1.   metallic solid
2.   ionic solids
3.   Covalent solid
4.   Extended solids


Question Number : 134 Question Id : 103435540 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 112 of 157
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Text of page 112
कौन िनरं तर नेटवक म परमाणु को अगले के साथ जोड़ता ह, आवत सारणी के िकसी भी त   को शािमल करता ह और प रणामी आबंध- कार    ादातर
आयिनक से पूरी तरह से सहसंयोजी तक िभ होते ह?
Options :
1.   धा   क ठोस
2.   आयिनक ठोस
3.   सहसंयोजक ठोस
4.   िव   ा रत ठोस


Question Number : 135 Question Id : 103435541 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is the most common method used for synthesizing inorganic solids?
Options :
1.   Ceramic method
2.   molecular method
3.   covalent method
4.   surface method


Question Number : 135 Question Id : 103435541 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा अकाबिनक ठोस के सं    ेषण के िलए उपयोग की जाने वाली सबसे सामा   िविध है ?
Options :
1.   िसरे िमक िविध
2.   आणिवक िविध
3.   सहसंयोजी िविध
4.   सतह िविध


Question Number : 136 Question Id : 103435542 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 113 of 157
Page 113 of 157
Text of page 113
Using the ______ as a 'driving force', it was possible to intercalate oxygen into oxide networks, at room temperature.
Options :
1.   bonding potential
2.   covalent potential
3.   chemical potential
4.   electrochemical potential


Question Number : 136 Question Id : 103435542 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
______ को ' ेरक बल' के     प म उपयोग करके, क तापमान पर, ऑ            ीजन को ऑ      ाइड नेटवक म अंतः थािपत करना संभव था।
Options :
1.   आबंध मता
2.   सहसंयोजी मता
3.   रासायिनक मता
4.   िवद् युत रासायिनक मता


Question Number : 137 Question Id : 103435543 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
 Which of the following has very high bone bonding ability and osteoconductivity?
Options :
1.   Hydroxyapatite
2.   Hydroxylamine
3.   Hydrogen peroxide
4.   Calcium oxide


Question Number : 137 Question Id : 103435543 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से िकसम अ थ बंधन मता और ओसिटओकोंडु                 िवटी ब त अिधक है ?
Options :
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 114 of 157
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Text of page 114
1.   हाइडॉ    यापटाइट
2.   हाइडा    ल अमाइन
3.   हाइडोजन पेरॉ   ाइड
4.   कै     यम आ    ाइड


Question Number : 138 Question Id : 103435544 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which inorganic compound is used in vulcanisation of black rubber?
Options :
1.   iron
2.   sulphur
3.   carbon
4.   boron


Question Number : 138 Question Id : 103435544 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िकस अकाबिनक यौिगक का उपयोग काले रबर के व     नीकरण म िकया जाता है ?
Options :
1.   लोहा
2.   गंधक
3.   काबन
4.   बोरॉन


Question Number : 139 Question Id : 103435545 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Name the synthetic polymer that is widely used as a non-stick surface in cookware.
Options :
1.   Thermoplastic polyurethanes
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 115 of 157
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Text of page 115
2.   Polytetrafluoroethylene
3.   Polystyrene
4.   High-density polyethylene


Question Number : 139 Question Id : 103435545 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
उस िसंथेिटक पॉलीमर का नाम बताइए िजसका      ापक    प से कुकवेयर म नॉन-     क सतह के    प म उपयोग िकया जाता है ।
Options :
1.   थमा    ा    क पॉलीयूरेथेनेस
2.   पॉलीटे टा    ूरोएिथलीन
3.   पॉली ाइरीन
4.   उ     घन    पॉलीएिथलीन


Question Number : 140 Question Id : 103435546 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
In which University, graduate students in the department of Chemical Engineering use digital computers in their doctoral research?
Options :
1.   University of Michigan
2.   Stanford University
3.   University of Oxford
4.   University of Cambridge


Question Number : 140 Question Id : 103435546 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िकस िव िव ालय म रासायिनक अिभयां ि की िवभाग म      ातक छा अपने डॉ        रे ट अनुसंधान म िडिजटल कं ूटर का उपयोग करते ह?
Options :
1.   िमिशगन िव िव ालय
2.       ै नफोड िव िव ालय
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 116 of 157
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3.   ऑ    फ़ड िव िव ालय
4.   कै   ज िव िव ालय



                                                        Discipline3
Group Number :                                                        8
Group Id :                                                            10343528
Group Maximum Duration :                                              0
Group Minimum Duration :                                              0
Show Attended Group? :                                                No
Edit Attended Group? :                                                No
Break time :                                                          0
Group Marks :                                                         20
Is this Group for Examiner? :                                         No



                                                        Discipline3
Section Id :                                                          10343528
Section Number :                                                      1
Section type :                                                        Online
Mandatory or Optional :                                               Mandatory
Number of Questions :                                                 20
Number of Questions to be attempted :                                 20
Section Marks :                                                       20
Enable Mark as Answered Mark for Review and Clear Response :          Yes
Sub-Section Number :                                                  1
Sub-Section Id :                                                      10343534
Question Shuffling Allowed :                                          Yes

Question Number : 141 Question Id : 103435547 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 117 of 157
Page 117 of 157
Text of page 117
Which of the following computer aid is use to perform steady state heat and mass balancing , sizing and costing for chemical process ?
Options :
1.   documentation
2.   excel sheeting
3.   Flowshedding
4.   Flowsheeting


Question Number : 141 Question Id : 103435547 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सी कं ूटर सहायता का उपयोग रासायिनक ि या के िलए थर अव था ऊ                  ा और     मान संतुलन, आकार और लागत को करने के
िलए िकया जाता है ?
Options :
1.       लेखन
2.   ए      ेल शीिटं ग
3.        ोशेिडं ग
4.       लोशीिटं ग


Question Number : 142 Question Id : 103435548 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which is a decision support tool dedicated to the management of plants that produce energy under the form of utilities?
Options :
1.   Erimino
2.   Eriane
3.   Amione
4.   Ariane


Question Number : 142 Question Id : 103435548 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
कौन सा उपयोिगताओं के      प के तहत ऊजा का उ ादन करने वाले संयं ों के बंधन के िलए समिपत िनणय समथन उपकरण है ?
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 118 of 157
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Text of page 118
Options :
1.   एरीिमनो
2.   इ रयन
3.   अिमयोन
4.   ए रयन


Question Number : 143 Question Id : 103435549 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Who is regarded as founder of inorganic quantitative and qualitative analysis?
Options :
1.   Torbern Bergman
2.   Linus Pauling
3.   Joseph Priestley
4.   Svante Arrhenius


Question Number : 143 Question Id : 103435549 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िकसे अकाबिनक मा ा क और गुणा क िव       ेषण के सं थापक के   प म माना जाता है ?
Options :
1.   टोरबन बगमैन
2.   िलनस पॉिलंग
3.   जोज़ेफ़ ी िल
4.     ां टे आरिनयस


Question Number : 144 Question Id : 103435550 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
What is the principle of separation in Fractional distillation?
Options :
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 119 of 157
Page 119 of 157
Text of page 119
1.   melting point
2.   vapour pressure
3.   boiling point
4.   freezing point


Question Number : 144 Question Id : 103435550 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
 भाजी आसवन म पृथ       रण का िस ां त   ा है ?
Options :
1.   गलनां क
2.   वा     दाब
3.        थनां क
4.   िहमां क


Question Number : 145 Question Id : 103435551 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The techniques that measure absorption in order to perform an assay are absorptiometry or absorption is called :
Options :
1.   Chromatography
2.   Spectrometry
3.   Diffraction
4.   Interference


Question Number : 145 Question Id : 103435551 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
परख करने के िलए अवशोषण को मापने वाली तकनीकों को अवशोषणिमित या अवशोषण कहा जाता है :
Options :
1.   वणलेखन
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 120 of 157
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Text of page 120
2.      े   ोमेटी
3.   िववतन
4.   इ िफर


Question Number : 146 Question Id : 103435552 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
 Which of the following is the process through which potential new therapeutic entities are identified, using a combination of computational,
experimental, translational, and clinical models?
Options :
1.   Chemical design
2.   Salt analysis
3.   Chemical formation
4.   Drug design


Question Number : 146 Question Id : 103435552 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सी ि या है िजसके मा म से क           ूटेशनल, योगा क, अनुवाद और नैदािनक मॉडल के संयोजन का उपयोग करके संभािवत नई
िचिक ीय सं थाओं की पहचान की जाती है ?
Options :
1.   रासायिनक िडजाइन
2.   लवण िव         ेषण
3.   रासायिनक गठन
4.   दवा (डग) िडजाइन


Question Number : 147 Question Id : 103435553 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which is found to be the best matching between two molecules in drug design?
Options :
1.   docking
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 121 of 157
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Text of page 121
2.   locking
3.   modelling
4.   bonding


Question Number : 147 Question Id : 103435553 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
दवा के िडजाइन म दो अणुओं के बीच सबसे अ   ा िमलान कौन सा पाया गया है ?
Options :
1.   डॉिकंग
2.   लॉिकंग
3.   मॉडिलंग
4.   आबंधन


Question Number : 148 Question Id : 103435554 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is obtained by copolymerization of 1,2- dichloroethane with sodium tetrasulphide?
Options :
1.   Polyethene
2.   Thiokol
3.   Bakelite
4.   Melamine


Question Number : 148 Question Id : 103435554 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा सोिडयम टे टास   ाइड के साथ 1,2-डाइ    ोरोएथेन के सहब लकीकरण ारा ा   िकया जाता है ?
Options :
1.   पॉलीथीन
2.   िथयोकोल
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 122 of 157
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Text of page 122
3.   बैकेलाइट
4.   मेलमीन


Question Number : 149 Question Id : 103435555 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Full form of PDI is ______________.
Options :
1.    polymer dispersity index
2.    polydispersity index
3.    polythene dispersity index
4.    polymer distributing index


Question Number : 149 Question Id : 103435555 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
PDI का पूण प _______ है ।
Options :
1.   पॉलीमर िड     िसटी इं डे
2.   पॉली िड    िसटी इं डे
3.   पॉिलथीन िड     िसटी इं डे
4.   पॉलीमर िड ी ूिटं ग इं डे


Question Number : 150 Question Id : 103435556 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is an alternating polyamide?
Options :
1.   amide
2.   melamine
3.   Bakelite
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 123 of 157
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Text of page 123
4.   nylon-2-nylon-6


Question Number : 150 Question Id : 103435556 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा     ावत पॉलीएमाइड है ?
Options :
1.   एमाइड
2.   मेलमीन
3.   बैकेलाइट
4.   नायलॉन-2-नायलॉन-6


Question Number : 151 Question Id : 103435557 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is not a research method?
Options :
1.   data analysis
2.   survey
3.   field research
4.   experiment


Question Number : 151 Question Id : 103435557 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सी अनुसंधान प ित नहीं है ?
Options :
1.   डे टा िव   ेषण
2.   सव ण
3.     े अनुसंधान
4.    योग
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 124 of 157
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Question Number : 152 Question Id : 103435558 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is not a category of research?
Options :
1.   empirical
2.   applied
3.   basic
4.   advanced


Question Number : 152 Question Id : 103435558 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सी अनुसंधान की ेणी नहीं है ?
Options :
1.    योगिस
2.   लागू
3.   बुिनयादी
4.   उ त


Question Number : 153 Question Id : 103435559 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is not a procedural step for research?
Options :
1.   report writing
2.   research protocol
3.   identify problem
4.   discussion


Question Number : 153 Question Id : 103435559 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 125 of 157
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Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन अनुसंधान के िलए ि या क कदम नहीं है ?
Options :
1.   रपोट लेखन
2.   अनुसंधान ोटोकॉल
3.   सम   ा की पहचान करना
4.   िवचार - िवमश


Question Number : 154 Question Id : 103435560 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
What is the percentage of krypton gas in the atmosphere?
Options :
1.   0.00015%
2.   0.000114%
3.   0.0002%
4.   0.0000023%


Question Number : 154 Question Id : 103435560 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
वायुमंडल म ि ॉन गैस का ितशत िकतना है ?
Options :
1.    0.00015%
2.    0.000114%
3.    0.0002%
4.    0.0000023%


Question Number : 155 Question Id : 103435561 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
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The amount of oxygen consumed by the pollutants in mg/L is called __________of a given sample.
Options :
1.   Chemical oxygen demand
2.   Curable oxygen demand
3.   Common oxygen demand
4.   Controlled oxygen demand


Question Number : 155 Question Id : 103435561 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
 दू षकों ारा mg/L म खपत ऑ         ीजन की मा ा को िदए गए नमूने का __________ कहा जाता है ।
Options :
1.   रासायिनक ऑ      ीजन की मां ग
2.   सुसा   (    ुरबल) ऑ    ीजन की मां ग
3.   सामा   ऑ     ीजन की मां ग
4.   िनयंि त ऑ     ीजन की मां ग


Question Number : 156 Question Id : 103435562 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Another name for photochemical smog is :
Options :
1.   London smog
2.   Los Angeles smog
3.   Canada smog
4.   Indian smog


Question Number : 156 Question Id : 103435562 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
 काशरासायिनक धुआँसा का दू सरा नाम है :
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 127 of 157
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Options :
1.   लंदन धुआँसा
2.   लॉस एं िज     धुआँसा
3.   कनाडा धुआँसा
4.   भारतीय धुआँसा


Question Number : 157 Question Id : 103435563 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
which of the following material is used for making protective cloths of car -race drivers, firefighters.
Options :
1.   Normex
2.   lexam
3.   Bakelite
4.   plastic


Question Number : 157 Question Id : 103435563 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से िकस साम ी का उपयोग कार-रे स डाइवरों, दमकल िमकों के सुर ा क कपड़े बनाने के िलए िकया जाता है ।
Options :
1.   नॉम
2.   ले       ाम
3.   बैकेलाइट
4.        ा    क


Question Number : 158 Question Id : 103435564 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following compound is very noxious?
Options :
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 128 of 157
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1.   acrolein
2.   nitrous oxide
3.   ferons
4.   carbon


Question Number : 158 Question Id : 103435564 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा यौिगक ब त हािनकारक है ?
Options :
1.   ए ोिलन
2.   नाइट् स ऑ       ाइड
3.   फेरॉन
4.   काबन


Question Number : 159 Question Id : 103435565 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Hard water contains which ions?
Options :
1.   Na+ ,CI¯
2.   Mg2+,He2+
3.   Ca2+,Mg2+
4.   Cl¯, Mg2+


Question Number : 159 Question Id : 103435565 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
कठोर जल म कौन से आयन होते ह?
Options :
1.   Na+ ,Cl¯
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 129 of 157
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2.   Mg2+, He2+
3.   Ca2+, Mg2+
4.   Cl¯, Mg2+


Question Number : 160 Question Id : 103435566 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of following is not a steps that is performed during a chemical analysis?
Options :
1.    sampling
2.   Discussion
3.   laboratory treatment
4.   field sample pre-treatment


Question Number : 160 Question Id : 103435566 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा रासायिनक िव   ेषण के दौरान िकया जाने वाला कदम नहीं है ?
Options :
1.   नमूनाकरण
2.   िवचार - िवमश
3.    योगशाला उपचार
4.   फी   नमूना पूव उपचार



                                                          Discipline4
Group Number :                                                             9
Group Id :                                                                 10343529
Group Maximum Duration :                                                   0
Group Minimum Duration :                                                   0
Show Attended Group? :                                                     No
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 130 of 157
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Edit Attended Group? :                                                No
Break time :                                                          0
Group Marks :                                                         20
Is this Group for Examiner? :                                         No



                                                        Discipline4
Section Id :                                                          10343529
Section Number :                                                      1
Section type :                                                        Online
Mandatory or Optional :                                               Mandatory
Number of Questions :                                                 20
Number of Questions to be attempted :                                 20
Section Marks :                                                       20
Enable Mark as Answered Mark for Review and Clear Response :          Yes
Sub-Section Number :                                                  1
Sub-Section Id :                                                      10343535
Question Shuffling Allowed :                                          Yes

Question Number : 161 Question Id : 103435567 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is not a type of chromatography?
Options :
1.   gas - solid chromatography
2.   liquid - soild chromatography
3.   gas - liquid chromatography
4.   ion exchange chromatography


Question Number : 161 Question Id : 103435567 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 131 of 157
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िन िल खत म से कौन सा वणलेखन का कार नहीं है ?
Options :
1.   गैस - ठोस वणलेखन
2.    व- ठोस वणलेखन
3.   गैस- व वणलेखन
4.   आयन िविनमय वणलेखन


Question Number : 162 Question Id : 103435568 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is analytical technique used for the separation of compounds soluble in a particular solvent?
Options :
1.   High Performance Liquid Chromatography
2.   ion exchange of chromatography
3.   Solvent chromatography
4.   Solute Chromatography


Question Number : 162 Question Id : 103435568 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन-सी िव   ेषणा क तकनीक का उपयोग िकसी िवशेष िवलायक म घुलनशील यौिगकों के पृथ     रण के िलए िकया जाता है ?
Options :
1.   उ   िन ादन व वणलेखन
2.   वणलेखन का आयन िविनमय
3.   िवलायक वणलेखन
4.   िवलेय वणलेखन


Question Number : 163 Question Id : 103435569 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Nanocrystalline materials manufactured by the sol-gel method give rise to foam-like structures known as________________.
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 132 of 157
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Options :
1.   aerogels
2.   aerosols
3.   foam
4.   sol


Question Number : 163 Question Id : 103435569 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
सोल-जेल िविध ारा िनिमत नैनोि   लाइन साम ी फोम जैसी संरचनाओं को उ         करती है िज   _________ कहा जाता है ।
Options :
1.   एरोजेल
2.         ष
3.   झाग
4.   सोल


Question Number : 164 Question Id : 103435570 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which heavy alloys and composites are being assessed for use as alternative DU penetrators?
Options :
1.   noncrystalline chromium
2.   noncrystalline tungsten
3.   noncrystalline bronze
4.   noncrystalline copper


Question Number : 164 Question Id : 103435570 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िकन भारी िम ातु और कंपोिजट का मू   ां कन वैक   क DU पेनेटे टस के   प म उपयोग के िलए िकया जा रहा है ?
Options :
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 133 of 157
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1.   गैर-ि       लीय    ोिमयम
2.   गैर-ि       लीय टं ग न
3.   गैर-ि       लीय कां
4.   गैर-ि       लीय तां बा


Question Number : 165 Question Id : 103435571 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is a classical method of quantitative analysis?
Options :
1.   Gravimetric analysis
2.   spectroscopy
3.   calorimetry
4.   Voltmetry


Question Number : 165 Question Id : 103435571 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा मा ा क िव   ेषण की शा   ीय िविध है ?
Options :
1.   भारा क िव         ेषण
2.     े     ो   ोपी
3.   कैलोरीिमित
4.   वो ् मेटरी


Question Number : 166 Question Id : 103435572 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which method is used to measure the heat of a chemical reaction?
Options :
1.   goniometry
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 134 of 157
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2.   Calorimetry
3.   Spectroscopy
4.   Titration


Question Number : 166 Question Id : 103435572 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िकस िविध का उपयोग रासायिनक अिभि या की ऊ     ा को मापने के िलए िकया जाता है ?
Options :
1.   गोिनयोमेटी
2.   कैलोरीिमित
3.        े    ो   ोपी
4.   अनुमापन


Question Number : 167 Question Id : 103435573 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which was the first alloy ever made and resulted in stronger weapons and tools?
Options :
1.   steel
2.   copper
3.   bronze
4.   aluminium


Question Number : 167 Question Id : 103435573 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
अब तक का पहला िम ातु कौन सा बनाया गया था और िजसके प रणाम        प मजबूत हिथयार और उपकरण बने थे?
Options :
1.   इ        ात
2.   ता
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 135 of 157
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3.   कां सा
4.   ए   ुिमिनयम


Question Number : 168 Question Id : 103435574 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is test for mutagenicity ?
Options :
1.   Ames test
2.   Widal test
3.   Aldol test
4.   Fehling's test


Question Number : 168 Question Id : 103435574 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा उ   रवतजनता ( ूटजिनिसटी) के िलए परी ण है ?
Options :
1.   एमेस परी ण
2.   वाइडल परी ण
3.   ए   ोल परी ण
4.   फेिलंग परी ण


Question Number : 169 Question Id : 103435575 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
A more complex and less defined syndrome is known as:
Options :
1.   Multiple sclerosis syndrome
2.   multiple chemical sensitivity
3.   sensitivity syndrome
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 136 of 157
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4.   Mild sensitivity


Question Number : 169 Question Id : 103435575 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
एक अिधक जिटल और कम प रभािषत िसंडोम के           प म जाना जाता है :
Options :
1.   म    ीपल    िलरॉिसस िसंडोम
2.   एकािधक रासायिनक संवेदनशीलता
3.   संवेदनशीलता िसंडोम
4.   म म संवेदनशीलता (माइ         सिसिटिवटी)


Question Number : 170 Question Id : 103435576 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
What type of biosensors are widerly stuided in cells ?
Options :
1.   Transistor-based
2.   Transport based
3.   Transit based
4.   membrane based


Question Number : 170 Question Id : 103435576 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
कोिशकाओं म िकस कार के बायोससर का          ापक     प से अ यन िकया जाता है ?
Options :
1.   टां िज र आधा रत
2.   प रवहन आधा रत
3.   टां िजट आधा रत
4.   िझ   ी आधा रत
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Question Number : 171 Question Id : 103435577 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
What is the full form of NADH?
Options :
1.   nicotinamide adenine dinucleotide
2.   nucleotide adenine nicotinamide
3.   nicotinamide adenosine dinucleotide
4.   nicotine adenine dinucleotide


Question Number : 171 Question Id : 103435577 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
NADH का पूण प        ा है ?
Options :
1.   िनकोिटनामाइड एडे िनन डाई ू     योटाइड
2.     ू   योटाइड एडे िनन िनकोिटनामाइड
3.   िनकोिटनमाइड एडे नोसाइन डाइ ू      योटाइड
4.   िनकोटीन एडे िनन डाइ ू    योटाइड


Question Number : 172 Question Id : 103435578 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which is the major product of catabolism of purine nucleosides, adenosine and guanosine?
Options :
1.   Urate
2.   Malate
3.   Adinosate
4.   serate


Question Number : 172 Question Id : 103435578 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 138 of 157
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Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
 ूरीन ू   योसाइड, एडीनोिसन और      ानोिसन के अपचय का मुख उ ाद कौन सा है ?
Options :
1.   यूरेट
2.   मेलेट
3.   एिडनोसेट
4.   सेरेट


Question Number : 173 Question Id : 103435579 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
The most powerful psychedelic drug is:
Options :
1.   LSD
2.   AZT
3.   Morphine
4.   chloramphenicol


Question Number : 173 Question Id : 103435579 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
सबसे श शाली साइकेडे िलक दवा है :
Options :
1.   LSD
2.   AZT
3.   मॉरफीन
4.      ोरामफेिनकोल


Question Number : 174 Question Id : 103435580 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 139 of 157
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Text of page 139
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is not an antidepressant drug?
Options :
1.   celexa
2.   prozac
3.   mifepristone
4.   desyrel


Question Number : 174 Question Id : 103435580 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन अवसादरोधी दवा नहीं है ?
Options :
1.   सेले       ा
2.       ोज़ैक
3.   िमफेि          ोन
4.   डे सीरे ल


Question Number : 175 Question Id : 103435581 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Ethylhexyl Methoxycinnamate is included in composition of :
Options :
1.   shampoo
2.   detergent
3.   hair oil
4.   fairness cream


Question Number : 175 Question Id : 103435581 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
एिथलहे      ल मेथो       ीिस ामेट के संघटक म शािमल है :
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 140 of 157
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Text of page 140
Options :
1.   शै ू
2.   िडटजट
3.   केश तेल
4.   फेयरनेस      ीम


Question Number : 176 Question Id : 103435582 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is not involved in the composition of perfumes?
Options :
1.   triclosan
2.   ethyl alcohol
3.   aspirin
4.   diethyl phthalate


Question Number : 176 Question Id : 103435582 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा इ की संरचना म शािमल नहीं है ?
Options :
1.   टाइ    ोसन
2.   एिथल अ       ोहल
3.   ए      रन
4.   डायथाइल फोथलेट


Question Number : 177 Question Id : 103435583 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which is the most widely use pesticides?
Options :
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 141 of 157
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1.   Butachlor
2.   Chlorpyrifos
3.   Captan
4.   Benfuracarb


Question Number : 177 Question Id : 103435583 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
कौन सा सवािधक       ापक   प से उपयोग िकया जाने वाला कीटनाशक है ?
Options :
1.   बुटाचलर
2.     ोरपाइ रफोस
3.   कै न
4.   बेनफुराकाब


Question Number : 178 Question Id : 103435584 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following pesticide is used in India?
Options :
1.   Captan
2.   (B) - BHC
3.   Dicofol
4.   Dimethoate


Question Number : 178 Question Id : 103435584 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से िकस कीटनाशक का उपयोग भारत म िकया जाता है ?
Options :
1.   कै न
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 142 of 157
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2.   (B) - BHC
3.   डाइकोफोल
4.   डाइमेथोएट


Question Number : 179 Question Id : 103435585 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Full form of BHC pesticide is:
Options :
1.    benzoicheaxachloride
2.    benzene hexachloride
3.    Bromine hexachloride
4.    beta-Hexachlorocyclohexane


Question Number : 179 Question Id : 103435585 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
BHC कीटनाशक का पूण प है :
Options :
1.   बज़ोइकहे            ा     ोराइड
2.   बजीन हे        ा       ोराइड
3.    ोमीन हे       ा        ोराइड
4.   बीटा-हे    ा           ोरोसाइ    ोहे   ेन


Question Number : 180 Question Id : 103435586 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is incorrect with respect to Fajan's rule?
Options :
1.   More charge on cation and anion, more is the covalent character
2.   Larger the anion, more will be its polarizability
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 143 of 157
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3.   Cations having 24 electrons in outermost shell bring greater polarisation
4.   Smaller the size of cation ,larger its polarising power


Question Number : 180 Question Id : 103435586 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
फ़ाया के िनयम के संबंध म िन िल खत म से कौन सा गलत है ?
Options :
1.   धनायन और ऋणायन पर िजतना अिधक आवेश होगा, सहसंयोजक वण उतना ही अिधक होगा
2.   ऋणायन िजतना बड़ा होगा, उसकी ुवीकरण मता उतनी ही अिधक होगी
3.   बा तम कोश म 24 इले       ॉनों वाले धनायन अिधक ुवीकरण लाते ह
4.   धनायन का आकार िजतना छोटा होगा, उसकी ुवीकरण श               उतनी ही अिधक होगी



                                                                Discipline5
Group Number :                                                                   10
Group Id :                                                                       10343530
Group Maximum Duration :                                                         0
Group Minimum Duration :                                                         120
Show Attended Group? :                                                           No
Edit Attended Group? :                                                           No
Break time :                                                                     0
Group Marks :                                                                    20
Is this Group for Examiner? :                                                    No



                                                                Discipline5
Section Id :                                                                     10343530
Section Number :                                                                 1
Section type :                                                                   Online
Mandatory or Optional :                                                          Mandatory
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 144 of 157
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Number of Questions :                                                 20
Number of Questions to be attempted :                                 20
Section Marks :                                                       20
Enable Mark as Answered Mark for Review and Clear Response :          Yes
Sub-Section Number :                                                  1
Sub-Section Id :                                                      10343536
Question Shuffling Allowed :                                          Yes

Question Number : 181 Question Id : 103435587 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Glyceryl trinitrate is also called as:
Options :
1.   Aerolein
2.   Crude oil
3.   Crown oil
4.   Nobel's oil


Question Number : 181 Question Id : 103435587 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
 ीसरील टाईनाइटे ट को इससे भी जाना जाता है :
Options :
1.   एरोलीन
2.   अप र ृ त ऑइल
3.     ाउन ऑइल
4.   नोबल ऑइल


Question Number : 182 Question Id : 103435588 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Nucleophilic substitution reactions in which the solvent acts as the nucleophile are called:
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 145 of 157
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Text of page 145
Options :
1.   solvolysis reaction
2.   Swarts reaction
3.   Schotten - Baumann reaction
4.   Groov's process


Question Number : 182 Question Id : 103435588 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
 ू   योिफिलक ित थापन अिभि या िजनम िवलायक       ू   योफाइल के   प म काय करता है , उसे कहा जाता ह:
Options :
1.   सॉ     ोिलिसस अिभि या
2.        ाट् स अिभि या
3.   शोटे न - बाउमन अिभि या
4.     ूव ि या


Question Number : 183 Question Id : 103435589 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is name for the coordinate complexes form by acid dissolve in water?

Note: For this question, discrepancy is found in question/answer. So,this
question is ignored for all candidates.
Options :
1. Etherates
2. Ester
3. Esterite
4. Esterase


Question Number : 183 Question Id : 103435589 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 146 of 157
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Text of page 146
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा पानी म घुलने वाले अ   ारा बनाए गए सम य संकुल का नाम है ?

Note: For this question, discrepancy is found in question/answer. So,this
question is ignored for all candidates.
Options :
1. ईथरे ट् स
2. ए र
3. ए े राइट
4. ए रे ज़


Question Number : 184 Question Id : 103435590 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
What is composition of Rectified spirit?
Options :
1.   95.6% of alcohol and 4.4 % of water
2.   5.6% of alcohol and 7.4 % of water
3.   76.6% of alcohol and 86.4 % of water
4.   95.6% of alcohol and 7.4 % of water


Question Number : 184 Question Id : 103435590 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
रे ीफाइड        रट की संरचना   ा है ?
Options :
1.    95.6% अ     ोहॉल और 4.4% पानी
2.    5.6% अ     ोहॉल और 7.4% पानी
3.    76.6% अ     ोहॉल और 86.4% पानी
4.    95.6% अ     ोहॉल और 7.4% पानी
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 147 of 157
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Text of page 147
Question Number : 185 Question Id : 103435591 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
What is another name of Ethanol ?
Options :
1.   Brain alcohol
2.   grain alcohol
3.   corn alcohol
4.   millet alcohol


Question Number : 185 Question Id : 103435591 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
इथेनॉल का दू सरा नाम   ा है ?
Options :
1.    ेन अ     ोहल
2.    ेन अ     ोहल
3.   कॉन अ     ोहल
4.   िमलेट अ    ोहल


Question Number : 186 Question Id : 103435592 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Name the reaction in which when phenyl esters on heating with anhydrous aluminium chloride in the presence of carbon sulphide gives a mixture
of o- and p- hydroxyketones.
Options :
1.    Elbs persulphate oxidation
2.    Fries rearrangement
3.    Phthalein reaction
4.    Kolbe's reaction


Question Number : 186 Question Id : 103435592 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 148 of 157
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Text of page 148
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
उस अिभि या का नाम बताइए िजसम काबन स           ाइड की उप थित म िनजलीय ए   ुिमिनयम   ोराइड के साथ िफनाइल ए र को गम करने पर o- और p-
हाइडॉ ीकेटोन का िम ण दे ता है ।
Options :
1.   ए      पस े ट ऑ     ीडे शन
2.       ाइज़ पुन व था
3.   थैलीन अिभि या
4.   को    े अिभि या


Question Number : 187 Question Id : 103435593 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is formula of Activity?
Options :
1.   Activity coefficient × Molarity
2.   Activity coefficient × molality
3.   Activity coefficient × normality
4.   Morality × Normality


Question Number : 187 Question Id : 103435593 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन-सा ि या (ऐ      वटी) का सू है ?
Options :
1.   ए     िवटी कोअिफश    × मॉल रटी
2.   ए     िवटी कोअिफश    × मोलिलटी
3.   ए     िवटी कोअिफश    × नॉमलटी
4.   मॉल रटी × नॉमलटी


Question Number : 188 Question Id : 103435594 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 149 of 157
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Text of page 149
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
From where we can obtain Salicylaldehyde?
Options :
1.   bitter almonds
2.   vanilla beans
3.   Meadowsweet
4.   cinnamon


Question Number : 188 Question Id : 103435594 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
हम सेिलस     हाइड कहाँ से ा   कर सकते ह?
Options :
1.   कड़वे बादाम
2.   वैिनला बी ज़
3.   मीडोज     ीट
4.   दालचीनी


Question Number : 189 Question Id : 103435595 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which element of group 13 does not decompose on heating?
Options :
1.   boron
2.   aluminium
3.   gallium
4.   thallium


Question Number : 189 Question Id : 103435595 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 150 of 157
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समूह 13 का कौन सा त   ऊ   ण पर अपघिटत नहीं होता है ?
Options :
1.   बोरॉन
2.   ए   ुिमिनयम
3.   गैिलयम
4.   थैिलयम


Question Number : 190 Question Id : 103435596 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Choose the incorrect statement with respect to to factors affecting rate of reaction .
Options :
1.   Greater the concentration faster the reaction
2.   Catalyst increases the rate of reaction
3.   the rate of reaction is not dependent on time
4.   greater the surface area , faster the reaction


Question Number : 190 Question Id : 103435596 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
अिभि या की दर को भािवत करने वाले कारकों के संबंध म गलत कथन का चयन कर।
Options :
1.   िजतनी अिधक सां ता उतनी तेज अिभि या
2.   उ ेरक अिभि या की दर बढ़ाता है
3.   अिभि या की दर समय पर िनभर नहीं है
4.   सतह े िजतना बड़ा होगा, अिभि या उतनी ही तेज होगी


Question Number : 191 Question Id : 103435597 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is Bordeaux mixture ?
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 151 of 157
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Text of page 151
Options :
1.   Copper sulphate + lime water
2.   Copper sulphate +water
3.   Copper oxide + Water
4.   Copper oxide + lime water


Question Number : 191 Question Id : 103435597 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा बोरदु (बौिडओ    ) िम ण है ?
Options :
1.   कॉपर स े ट + चूने का पानी
2.   कॉपर स े ट + पानी
3.   कॉपर ऑ     ाइड + पानी
4.   कॉपर ऑ     ाइड + चूने का पानी


Question Number : 192 Question Id : 103435598 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which is the most abundant transition metal?
Options :
1.   Iron
2.   copper
3.   cobalt
4.   zinc


Question Number : 192 Question Id : 103435598 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
सबसे चुर मा ा म सं मण धातु कौन सी है ?
Options :
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 152 of 157
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Text of page 152
1.   लोहा
2.   ता
3.   कोबा
4.   ज    ा


Question Number : 193 Question Id : 103435599 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
What is the value of spin only magnetic moment of Sc3+?
Options :
1.   0B.M.
2.   1.73 B.M.
3.   1B.M.
4.   1.65 B.M.


Question Number : 193 Question Id : 103435599 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Sc3+ के केवल चुंबकीय आघूण के     न का मान    ा है ?
Options :
1.   0B.M.
2.   1.73 B.M.
3.   1B.M.
4.   1.65 B.M.


Question Number : 194 Question Id : 103435600 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Alloys containing mercury as one of the constituent elements are called ________________.
Options :
1.   amalgam
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 153 of 157
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Text of page 153
2.   mercury oxide
3.   amalgam oxide
4.   mercury alloy


Question Number : 194 Question Id : 103435600 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
एक घटक त      के    प म मकरी यु    िम ातुओं को _________ कहा जाता है ।
Options :
1.   संलय
2.   मकरी ऑ        ाइड
3.   अमलगम ऑ         ाइड
4.   मकरी िम ातु


Question Number : 195 Question Id : 103435601 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
What is the full form of LUMO?
Options :
1.   Lowest unoccupied molecular orbital
2.   Least unpaired molecular orbital
3.   Lowest unpaired molecular orbital
4.   Least unoccupied molecular orbital


Question Number : 195 Question Id : 103435601 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
LUMO का पूण प            ा है ?
Options :
1.   लोअ     अना     पाइड मॉिल    ूलर ऑिबटल
2.   ली     अनपेड मॉिल       ूलर ऑिबटल
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 154 of 157
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3.   लोअ    अनपेड मॉिल     ूलर ऑिबटल
4.   ली    अना   पाइड मॉिल    ूलर ऑिबटल


Question Number : 196 Question Id : 103435602 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Complete the reaction : K₂[PtCl₄] + CH₂=CH₂ ---------------->
Options :
1.   K[PtCl3(C2H4)] + KCl
2.   K[(PtCl4)C2H4] + KCl
3.   [PtCl4(C2H4)] + KCl
4.   K[Pt(C2H4)] + Cl2


Question Number : 196 Question Id : 103435602 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
अिभि या पूण कर: K2[PtCl4] + CH2=CH2 ---------------->
Options :
1.   K[PtCl3(C2H4)] + KCl
2.   K[(PtCl4)C2H4] + KCl
3.   [PtCl4(C2H4)] + KCl
4.   K[Pt(C2H4)] + Cl2


Question Number : 197 Question Id : 103435603 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Predict the shape of [Mn2(CO)10].
Options :
1.   two trigonal pyramidal
2.   tetrahedral
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 155 of 157
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Text of page 155
3.   trigonal pyramidal
4.   two square pyramidal


Question Number : 197 Question Id : 103435603 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
[Mn2(CO)10] के आकार का पूवानुमान कर।
Options :
1.   दो ि कोणीय िपरािमडल
2.   चतु    लकीय
3.   ि कोणीय िपरािमडल
4.   दो वग िपरािमडल


Question Number : 198 Question Id : 103435604 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is not a type of Smog?
Options :
1.   London smog
2.   Sulphurous smog
3.   Los Angeles smog
4.   Unites nation smog


Question Number : 198 Question Id : 103435604 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा धुआँसा का कार नहीं है ?
Options :
1.   लंदन धुआँसा
2.   स      रस धुआँसा
3.   लॉस एं िज    धुआँसा
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 156 of 157
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4.   यूनाइट् स नेशन धुआँसा


Question Number : 199 Question Id : 103435605 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following is an example of cationic detergent?
Options :
1.   Ethoxylate nonylphenol
2.   Sapamine
3.   Mifepristone
4.   Valium


Question Number : 199 Question Id : 103435605 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सा धनायन अपमाजक का उदाहरण है ?
Options :
1.   एथो      लेट नोनीलफेनोल
2.   सैपामाइन
3.   िमफेि     ोन
4.   वैिलयम


Question Number : 200 Question Id : 103435606 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
Which of the following drugs is used in stress relief?
Options :
1.   Chloramphenicol
2.   Reserpine
3.   Penicillin
4.   Morphine
DSSSB Lab Assistant 2021 question paper, 7 September 2021, Laboratory Assistant (Chemistry), Shift 1, page 157 of 157
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Text of page 157
Question Number : 200 Question Id : 103435606 Question Type : MCQ Option Shuffling : Yes Is Question Mandatory : No Option
Orientation : Vertical
Correct Marks : 1 Wrong Marks : 0.25
िन िल खत म से कौन सी दवा तनाव राहत म योग की जाती है ?
Options :
1.     ोरामफेिनकोल
2.   रसपाइन
3.   पेिनिसिलन
4.   मॉरफीन
Page 1 of 157

Source: Delhi Subordinate Services Selection Board. Question paper published by Delhi Subordinate Services Selection Board.

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