BSSC 2018: Utpad Rasayan Parikshak (Advt. 18010116), Chemistry
Text of page 1
TEST BOOKLET NO. 400313
UIR8CH 2018
TIME: 02 Hours 15 Minutes
T: 0215f.ii
(This Test Booklet contains UNATTACHED OMR Answer-sheet inside it.
A blue/black ball point pen will be provided separately in the Examination Hall.) No. of Questions: 150
(1-tR.iz 'i Tt31'kiPii 3 t—T3lT%I TVVT: 150
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Subject/fl:CHEM1STRY I iiq'iii(
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Text of page 2
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Text of page 3
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Continued on page no. 64
fiT64T(di
3 P.T.O.
Text of page 4
1. The Major product formed in the following reaction is:
(i) Pd(OAc)2, PPh3
PhBr + NaOAc, DMA
Ph
(A) (B)
Ph , Ph
Ph
(C) (D)
2. In the thermogravimetriC analysis of 0.250 g of Ca(OH) 2, the loss in weight at different
temperature is given in List - I and List - II contains different process during the analysis.
List - I List - II
(Weight Loss) (Different Process)
(a) 0.018 g at 100-150°C, (i) dehydration
(ii) loss of hydroscopic water
(b) 0.038 g at 500-600°C
(c) 0.029 g at 900-950°C (iii) dissociation of CaO
Correct match of List - I with List - his
(a) (b) (c)
(A) (ii) (iii) (i)
('B) (ii) (i) (iii)
(C) (iii) (ii) ' (i)
(D) (i) (iii) (ii)
3. Reference electrode used in polarography is:
(A) DME (B) Pt electrode
(C) SCE or large pooi of Hg (D) None
4. Storage of iron in the body is carried out by:
(A) Cytochrome I450 (B) Ferritin
(C) Haemóglobin (D) Myglobin
4
Text of page 6
5. A Chemical reaction at 27°C, the activation energy is 600 R. The ratio of rate constants at
327°C to that of at 27°C will be
(A) e (B) 2 (C) e2 (D) 4
6. When mixture of cis- and trans-I, 2-cyclobutanedicarboxylic acid is heated, product will be:
(A) mixture of cis and trans-anhydride
(B) cis-anhydride
(C) trans-anhydride
(D) mixture of trans-I, 2-cyclobutanedicarboxylic acid and cis-anhydride
7. Which one of the following test of carbohydrate is based on dehydration?
(A) Benedict's test (B) Selivanoff's test
(C) Barbed's test (D) Treatment with Fehling's solution
/ OO\
8. The point group of structure H H is:
(A) C3 (B) C2h C2v (D) C2
9. The 13-hydrogen elimination will be facile in:
/ /
(A) M H
/-N
(B) H M (C) M H (D) M H
10. Chelate effect is
(A) predominantly due to entropy change
(B) independent of ring size
(C) due to equal contribution of entropy and enthalpy change
(D) predominantly due to enthalpy change
11. Which one of the following structure belongs to 9-BBN?
(A)
-7
(D) B7
H'
6
Text of page 8
12. The hydrogen fluoride is reacting with glass bottle and gives:
(A) CaF2 (B) Na2SiO3 (C) Na2SiF6 (D) Na2F2
13. Identify the correct statement regarding enzymes
(A) Enzymes are specific biological catalysts that normally functions at high temperatures
(T 100°C).
(B) Enzymes are specific biological catalysts that cannot be poisoned.
(C) Ehzymes are normally heterogeneous catalysts that are very specific in action.
(D) Enzymes are specific biological catalysts that possess well-defined active sites.
14. The spectroscopic technique by which ground state dissociation energies of diatomic molecules
can be estimated is
(A) IJV-visible spectroscopy (B) infrared spectroscopy
(C) X-Ray spectroscopy (D) microwave spectroscopy
15. For a particle in a one dimensional box of length L, the second excited state wave function
is
ITX 3x
(A) = sin — (B) = sin
2/L .
L L
.4irx . 2x
(C) = 2/L Sm (D) = sin—
L L
16. Which reagent below would enable you to remove sulphate ions from a solution containing
both sulphate and chloride ions?
(A) Barium hydroxide (B) Potassium hydroxide
(C) Barium sulphate (D) Sodium hydroxide
• 17. A buffer solution has equal volumes of 0.3M NH4OH and 0.03M NH4CI. The pKb of the base
iS5. ThepH is:
(A) 10 (B) 4 (C) 7 (D) 9
18. Decomposition of H202 follows a first order reaction. In 50 minutes the concentration of
H202 decreases from 0.4 M to 0.1 M in such decomposition. When the concentration of
HO2 reaches 0.01 M, the rate of formation of will be
(A) 6.93x10 2 mol min (B) 6.93x10 4 mol min 1
(C) 1.38x10 4 mo1 min (D) 2.66 minat STD
Text of page 10
19. The correct pair of complementary colours is
(A) Blue and green (B) Violet and yellow
(C) Blue and red (D) Orange and green
20. Which of the following is a synthetic equivalent of aryl cation?
(B) H2C=C—CN (C) ArN2X (D) RCHO
(A) CO2
21. Which of the following does not give pure rotational spectra?
(B) HF (C) N2 (D) NO
(A) CO
22. The correct increasing order of C0 stretching frequency in below given compounds is:
0 OHO
(iii) (iv)
(A) (iv) < (iii) < (ii) < (i) (B) (iv) < (ii) < (iii) < (i)
(C) (iv) < (iii) < (i) < (ii) D) (iii) < (iv) <(ii) < (i)
23. What will be the effect of addition of oiganic material on water?
(A) BOD remains unaffected (B) Reduces BOD
(C) COD remains unaffected (D) Increases BOD
24. Which one of the following is nota condensation polymer?
(B) Teflon (C) Keviar (D) Nylon-66
(A) Dacron
25. Which one of the followin'g detector is not used in HPLC?
(A) Fluorescence detector (B) Flame photometric detector
(C) Electrochemical detector (D) Infrared absorhance detector
26. Which device is used for determination of surface tension?
(A) Stalagmometer (B) Ostwald viscometer
(C) pH meter (D) Potentiostat
10
Text of page 11
•1
19.
(A) 11Ml (B) i4ii 1 tT
(C) 4ki1tk1M (D) -ilI.c1
20. 1i • U:c T1l T k.lul qic4,
(A) CO2 (B) H2 C=C—CN (C) ArNX (D) RCHO
21.
(A) CO (B) HF (C) N2 (D) NO
22.
OHO
C=O
Ph
(i) (ii) (iii) (iv)
(A) (iv) < (iii) < (ii) < (i) (B) (iv) < (ii) < (iii) < (i)
(C) (iv) < (iii) < (i) < (ii) (D) (iii) < (iv) < (ii) < (i)
23. i I'ii?
(A) BOD aT5P1Tr r (B) BOD u
(C) COD 3T1Tf m (D) BOD tt
24. —ft?
(A) 9l*1 (B) ii (C) nc1c1 (D) -ii-66
25. 1f -fT I4k (111ct) HPLC 'ii Yrf iiqr 'iici1t?
(B) H
(C) jc11i1f (D) -Mii'&S 31)I
26.
(A) 44k( (B) 3.c1IQ qi-iii-u
(C) pH. 411 t11 (D) ki4)
11 P.T.O.
Text of page 13
27. Which one of the following equations represents packing fraction of the isotope?
Isotope mass — Mass number Mass number
(A) x (B) Isotope mass — Mass number iø
Isotope mass
Mass number — Isotope mass Isotope mass — Mass number
XI (D) X
(C) Isotope mass Mass number
28. The activation energy of a chemical reaction can be determined by:
I
(A) Evaluating the concentration of reactants at two different temperatures
(B) Evaluating rate constant and standard temperature
(C) Evaluating rate constant at two different temperatures
(D) Changing the concentration of reactants
29. Gel permeation chromatography is:
(A) Gas chromatograpy
(B) Size exclusion chromatography
(C) Matrix assisted laser desorption/ioniZati.fl (MALDI)
(D) Electron spray indication
30. A cylinder of gas contained 17.1 kg of butane (C4H10). If a normal family needs 30000 kJ of
energy per day. How many days will it last ? (Given that H for combustion of butane
is — 2658 kJ)
(A) 20 days (B) 24 days (C) 25 days (D) 26 days
31. Which one of the following molecule has highest dipole moment?
12
Text of page 15
32. By Maxwell-BoltzlTlarlfl equation the most probable speed of a gas at a certain temperatul.
is
(A) Vmp = \J3 RT/M (B) Vmp = \IRT/2M
(D) Vmp \J8RT/ M
(C) Vmp = j2 RT/M
33. Total degree of freedom for linear molecule is
(C) 3N-3 (D) 3N-6
(A) 3N (B) 3N-5
34. Which one of the following diene is most reactive in the Diels-Alder reaction?
(B) (C) (D)
(A)
• 35. An Ilkovic equation is•:
C
(A) i= 607 n D2/3 nil! 2 tV 6 C (B) jd607 n D1/6 rn2!3 t1/2
(C) td = 607 n D112 2/3 1/6 (D) 1d 607 n D2/3 rr11/6 ti!2 C
36. When Al is added to KOH solution:
(B) water is produced
(A) no action takes place
oxygen is evolved (D) h)2drogen is evolved'
(C) *
37. The IUPAC name of [Ni(NH3)4] [NiCl4] is:
(A) Tetrachioronickel (ll)tetraamminefliCkel (II)
(B) TetraamminefliCkel (11)_tetrachiorofliCkelate (II)
(C) TetraamminefliCkel (11)_tetrachioroflickel (II)
(D) TetraanimineniCkel (lI)tetrachloroniCke1ate (0)
38. Which one of the following compound has Effective Atomic Number (EAN) equal to 3.
Atomic number of Cr = 24, Fe =26 and Ni =28
1 (D) Ni(CO)4
(A) K2[Ni(CN)4] (B) K3[Cr(C204)3] (C) K4[Fe(CN)6
14
Text of page 17
39. The products X and Y in the following reaction sequence, respectively are:
Br2, CH2C12 t-BuOK
—40°C Et2O-THF
Br
(A) (B)
Br Br
(C) F
(D)
40. In a given spectra, the coupling constants and multiplicity of peaks are:
CDCI3, 400 MHz
C
3.30
r.rfl-, r'fl
3.11 3.14 3.92
I I
320
.............................
3.53 320 3.54 3.52 310 3.76 3.76 3.74 3.72 3.75 3.03 3.06 3.64
III-
(A) 3.914 (dd, J=11.2, 4.0 Hz, 1H) and 3.725 (q, J=7.2 Hz, 1H)
(B) 3.933 - 3.895 (m, 1H) and 3.746 - 3.700 (m, 1H)
(C) 3.914 (dd, J=11.2, 4.0 Hz, 1H) and 3.723 (dd, J=11.2, 7.2 Hz, 1H)
(D) 3.915 (q, J=11.2 Hz, 1H) and 3.725 (q, J=7.2 Hz, iH)
41. Which of the following carbonyl will have strongest C- 0 bond?
(A) Mn(CO)6 (B) V(CO)6 (C) Fe(CO)5 (ID) Cr(CO)6
16
Text of page 18
.9
39. 1i 3T14i scit ctiiç X t Y 11:
400313
Br2, CH2Cl2 t-BuOK
— 40°C Et2O-THF
(A)
Q" Br
(B)
cz:
Br
(C) I\ )'Br
(D)
40.
8
nfl ., 7, a
I I
CDCI3, 400 MHz
3.04 3.04 3.94 3.92 320 3.60 326 3.64 3.02 3.90 3.?! 3.74 3.74 370 3.7, 3.60 3.04 3.64
61(79611
(A) 3.914 (dcl, 1=11.2, 4.0 Hz, 1H) 'T11 3.725 (q, J=7.2 Hz, 1H)
(B) 3.933 - 3.895 (m, 1H) TTT 3.746 - 3.700 (m, IH) I
(C) 3.914 (dd, 1=11.2, 4.0 Hz, IH) TT1 3.723 (dd, 1=11.2, 7.2 Hz, 1H)
(D) 3.915 (q, 1=11.2 Hz, IH) 1T1 3.725 (q, 1=7.2 Hz, IH)
41. ff 144 11r-lQ1 C-O 3T1T ici
(A) Mn(CO)6 (B) V(CO)6 (C) Fe(CO)5 (D) Cr(CO)6
17 P.T.O.
Text of page 19
42. Spectra of a compound X is given below. The correct structure of the compound is:
I '3C NMI1 Spectrum
(100 MIll. COCI,w{ullonl
O(I1CU,CI{3tCHf
IR Spctrnnt solvent
promo decoupled
(Itqoid (tIne) 2249
L 200 160 120 80 40
4000 3000 Q O(ppne
2000 1600 1200 800
V (cn,')
'H 14541 Spectrum
200MM.. CflCI, ortatiro)
100 Mann Spectnom
so :
II
e,tpan.ien
60
40
H
M 147/149
20
iUf , 3.4 3.0 2k 2.2 ppm
40 80 120 160 200 240 280
10 9 8 7 6 5 4 3 1 0
ö)pp81)
NH2
(A) Br (B) Br
CN
N
(C) NC OH (D) Br
43. The enthalpy of certain reaction at 273 K is —20.75 kj. The enthalpy of same reaction a
373 K will be : (if heat capacities of reactant and products are same)
(A) Zero (B) —20.75 x kJ
273
(C) —2075 kJ (D) —20.7 kJ
44. Hydrogenation of the triene (X) with one equivalent of H2 could give three isomers C10H14.
Which one of the following will have highest Xmax ?
(C) (D)
18
Text of page 21
45. The structure of Marshall's acid is:
- 0 0
II
HO—S—O—O—S—OH (B) HO—O—P—OH
II II
0 0 OH
O 0
II II
HO—P—O--O—P—OH (D) HO —0— S — OH
OH OH 0
46. For the below given reaction sequence the.product (Y) is:
(i) NBS (i) Me2CuLi
(ii) 30% NaOH Work up with NH4CI solution
(A) (B)
11OH
(C) (0)
47. The major product of following reaction is:
0
hv, t-BuOH
t-BuO OH
(A) (B)
(C) (D)
4.
20
Text of page 23
48. Which of the following spectroscopic technique will be useful to distinguish between M-S(
and M-NCS binding modes?
(A) JR (B) HRMS (C) EPR (D) Powder XRD
49. For the given complex [CoCl2(en)(NH3)2] , number of geometrical isomers and the numi
of optical isomer respectively are
(A) 3 and 2 (B) 2 and 0 (C) 2 and 2 (D) 4 and 2
50. sp orbital are of the form C12s + C2 2p (2s and 2p are normalised individually). T
coefficient of normalised form of above sp hybrid orbital is
(A) 1
1 - ' 2- (B) C j = C2= ±
1
(C) C=—C=+--
2 (D)
2'
p
51. Product (Y) formed in the following reactiors is:
Me3Si H (i) EtLi, TI-IF (ii)n-PrCHO
— 78°C to — 30°C .. Y
— 78°C to rt
(iii)aq. NH4CI
Me3Si OH
(A) (B)
Me3Si, OH MeSi; OH
(C) (D)
52. Ion CuQ has two types of bonds in the solid state. These are:
(A) One long and four short (B) Three long and two short
(C) Two long and three short (D) Four long and one short
22
Text of page 25
53. Product of the following reaction is:
/ \
(i)HO OH
TsOH
(A)
(C) (D)
54. Consider the reaction:
Product and type of reaction respectively, are
photoenolisation
Norrish type-I
(A) (B)
Norrish type-Il
(C) Norrish type-Il (D)
CH3
55. A solution containmg 2.675 g of CoC13.6NH3 (molar mass = 267.5 g mo1 ) is passed through
a cation exchanger. The chloride ion obtained in solution were treated with excess of AgNO3
to give 2.87 g of AgCl (molar mass = 143.5 g mol - 1). The formula of complex is:
(A) [CoCl(NH3)5]Cl2 (B) [CoC13(NH3)3]
(C) [Co(NH3)5]C13 (D) [CoCl2(NH3)4]Cl
24
Text of page 28
0
56. A compound shows singlet at 2.70 ppm in a 100 MHz NMR spectrometer. What
observed shift from TMS in Hz when 500 MHz NMR spectrometer is used?
(A) 270 Hz (B) 1350 Hz (C) 675 Hz (D) 540 Hz
57. What would be signal for phosphorous hexafluoride in a 31P-NMR?
(A) Triplet (B) Quartet (C) Singlet (D) Septet
58. The product (Y) of the following reaction sequence is:
1. MeC(QMe) 2. (i) BH3• THF
HOOcCOOH TsOH catalyst ?.y.
(ii) H, H20
OH
• 0
0
(A) (B)
HO" ob (C) (D)
59. A sample of ordinary neon is found to consist of 20Ne, 21
Ne and Ne isotopes in the perceni
of 90%, 3%, 7% respectively, The actual atomic weight of neon is:
(A) 20.75 (B) 20.52 (C) 20.17 (D) 20.30
60. The current due to supporting electrode is called:
(A) Residual current
(B) Limiting current
(C) Dfffus0 current (D) Migration current
61. In the iodometric titration of sodium thiosulphate (Na2S2O3
) with
20 mL of0.IM dichromate requires 20 mL of 'x' M thiosuiphate. acidic dichromate solutj
The value of 'x' is:
(A) 0.3 (B) 0.1 (9 0.6 (D) 0.4
62. The angle strain in cyclobutane is:
(A) 29°16 (B) 2444' (C) 19°22 (D) 90441
26
Text of page 31
63. The intensity ratios of multiplets derived is given by Pascal's triangle. A C-H proton si
multiplet in isopropyl bromide, the intensity ratio for this multiplet is:
(A) 6 15 1 20 1 15 6
(B) 1 6 15 20 15 6 1
(C)6 1 15 20 15 1 6
(D) 1 15 6 20 6 15 1
64. DTA curve represents
(A) change in temperature v/s volume
(B) difference in heat contents v/s temperature
(C) change in mass v/s temperature
(D) heat gained or lost v/s temperature
65. The following reaction is known as:
KOH, EtOH :
cc Q
+
(A) Claisen - Schimdt reaction (B) Mannich reaction
(C) Aldol condensation (D) Robinson annulation
66. The process of aton-tisation in ICP-AES carried out by:
(A) Graphite furnace (B) Spark discharge
(C) Flame (D) ICP-torch
67. Which one of the followiiig statement is incorrect related to Be, Mg and Sr?
(A) Be and Mg does not react with hydrogen
(B) Sr reacts with hydrogen to form hydride
(C) Carbonates of Sr is precipitated with NH4C1
(D) Carbonates of Be and Mg are precipitated with NH4C1
68. Which of the following metal absorb hydrogen?
(A) Al (B) Pd (C) Zn (D) K
28
Text of page 33
69. The combustion of methane is expressed as:
CH4(g) + 202(g) —* CO2(g) + 2H20(g)
The number of moles of methane required to produce 9.0 g of H2
0(g) after combustion i
(A) 0.50 (B) 0.02 (C) 0.20 (D) 0.25
70. Match the list -
I with list - II and select the correct answer using codes given below the Ii
List - I
List - II
(Correct order)
(Properties)
(a) Co3 <Fe3+ <Cr3+ < 3+
Paramagnetic behaviour
(b) Sc < Ti <Cr <Mn
Number of oxidation states
(c) V2 <Cr <Fe2+ <Mn2+
Stability in aqueous solution
(d) Ni2 + <Co2 t <Fe2 + <Mn2 +
Ionic size
(a) (b) (c) (d)
(A) (i) (ii) (iii) (iv)
(B) (in) (ii)(i) (iv)
(C) (ii) (iii) (i) (iv)
(D) (ii) (i)1 (iii) (iv)
71. Carbon monoxide is harmful
(A) It generates excess CO2 (B) It forms carbolic acid
(C) It is carcinogenic
(D) It competes with oxygen for haemoglobin
72. Which of the following is correct in relation to entropy ?
(A) The change in entropy for .a cyclic process is always positive
(B)
The change in entropy in going from one state to another is dependent to the path
(C) When a solid changes in to liquid, the entropy change is S1
= HfUSlOfl X T
(D) In a • reversible process Ssystem Ssurroufldjjg
—
73. As per uncertainty principle, 1.x. p equal to:
(A) h/2 (B) 0 (C) /z/4i,- (D) !V2ir
74. Schroclç carbene are:
(A) Singlets and nucleophilic
(B) Singlets and electrophilic
(C) Triplets and electrophilic
(D) Triplets and nucleophiic
30
Text of page 35
0
69.
CH4(g) + 202(g) —* CO2 (g) i- 2H20(g)
'4c1 H20(g) '1 9.0 g 31T tT fli€9
r r 4)ci 1Ic1i ft?
(A) 0.50 (B) 0.02 (C) 0.20 (D) 0.25
70. __
f -I f -II
(i)
(_)
(a) Co3 <Fe3 <Cr3 <Sc3 ' (i)
(b) Sc < Ti < Cr < Mn (u) 3Tftj 3T-TT3f
(c) V2 <Cr2 <Fe2 <Mn2 (iii)
(d) Ni2 <Co2 <Fe2 <Mn2 (iv) 31I11ic 3TR
(a) (b) (c) (d)
(A) (i) (ii) (iii) (iv)
(B) (iii) (ii) (i) (iv)
(C) (ii) (iii) (i) (iv)
(D) (ii) (i) (iii) (iv)
71. i4r 4i t
• (A) (B)
•(C) I (D) 111-f
72.
(A) 'itk b4 f 9ft iic-i, t I
(B) t ,c4, 3TT ETt 3T ?I'ift ti
(C) Ic* if 11 1 ftc11Sf HXT
(D) dcl-u)q -{ if =• ' 5surrounding
73. ifqiT fi-ci x. p I4(
(A) h/2 (B) 0 (C) iz/4i (D) h/2ir
74. , q,irit:
(A) ftiz Tfi (B) i c1.j*.
(C) (D)
31 P.T.O.
Text of page 36
75. The occurrence of a reaction is impossible if:
(A) zH is —ye; S is + ye
(B) His —ye; Sis also —ye butH > ThS
(C) H is + ye; S is — ye
(D) Hjs +ve; S is also +vebutH < ThS
76. In the reaction mechanism this step is known as
0
0
__o 0 /
34 Ph3?.,, ,H
Br1 Pd'
Br" PPh3
Pd" s-Intermediate Pd11 rr-Comp1ex
(A) n-hydride elimmation (B) 0xidatjve addition
(C) syn-insertion (D) reductive elin-unatjon
77. The major product formed in following reaction is:
HO
(i) 2 LDA, THF, — 78°C
'(ii) 2CH31, HMPA, — 45°C
(A) (B) (C) (D)
32
Text of page 38
78. The name of the equation showing relation between electrode potential(s), standard
potential (E°) and concentration of ions in solution is:
(A) Faraday's equations (B) Nernst's equation
(C) Ohm's equation
(D) Kohlrausch's equation
79. Among the following esters, the one that undergoes acid hydrolysis fastest is:
OH
CH3 . CH3
(A) (B)
CH3
CH3
(C) (D)
OH
80. The most adverse effect of radioactive pollutant is
(A) Polio
(B) Gene mutation
(C) Tuberculosis (D) Hepatitis
81. 6-Amino-purjne is commonly called as:
(A) thymine (B) adenine (C) guanine (D) uracil
82. Mercury and its compounds are toxic due to:
(A) interference with oxygen transport
(B) binding to histidines
(C) inhibition of B12 synthesis
(D) high affinity to thiols
83.
The ligand(s) that is (are) fluxional in ftq5C5HS)(11..C5H5)Fe(CO) J in the temperatut
221-291 K, is (are)
(A) 11-051-15 and CO (B) i 5-05H5
(C) 'fl 5-05H5 and CO (D) ii1-05H5
84.
A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the i
which element undergoes maximum change in oxidation number?
(A) C (B) CI (C) S (D) 0
34
Text of page 40
85. The radical can be identified by Borax Bead test is
(A) Cu + (B) Mg2 (C) Ca2 (D) Cu2
86. In column chromatography method of separation is/are:
(A) Adsorption (B) Ion-exchange (C) Partition (D) All
87. Thallium shows different oxidation state because
(A) it is a transition metal (B) of its amphoteric character
(C) of inert pair effect (D), of its high reactivity
88. The major product of the below given reaction is:
Br2 excess
CHCI3, rt
(A) (B)
(C). (D)
89. Which of the following pair of chemical reaction is certain to result of sp
reaction ?
(A) Endothermic and increasing disorder
(B) Exothermic and decreasing disorder
(C) Endothern-uc and decreasing disorder
(D) Exothern-uc and increasing disorder
36
Text of page 42
Product of the reaction of sodium methoxide and trans2bromomethylcycl0he c
90.
(A) (B)
(C) mixture of (A) and (B) (D)
91. Which one of the following stationary phase for HPLC is stable at pH iange 1-14?
(A) Polystyrene-DVB matrix and Silica supported organic substance
(B) Silica supported organic substance
(C) Polystyrene-DVB matrix
(D) None of these
92. Which one of the following is not classified as a volumetric method of analysis?
(A) Complexometric titration
(B) Silver is precipitated as AgCl dried at 13OC and weighed as chloride of Ag
(C) Zeta-potential titration
(D) Redox titration
93. For the reaction occurs in a cell:
Zn(s)+Cu2 ~ Cu(s)+Zn
Given = + 0.76 V and E°cVc2 .- = + 0.28 V
Standard emf of the cell will be
(A) —0.76V (B) —0.28V (C) 0.48V (D) 1.04V
• 94. Number of Co-Co bonds in Co4(CO)12 is:
(A) 5 (B) 6 (C)3 (D)4
38
Text of page 44
95. Which one of the following is Eriochrome black - T?
SO3Na NaO3S
NaO3S
(B)
(A)
02N
HO3S
(D)
(C)
HO
96. Highest oxidation state of Manganese in fluorides is + 4 (MnF 4) but highest oxi
oxides is +7 (Mn2O7) because
(A) Fluorine does not possess d-orbitals
(B) Fluorine is more electronegative than oxygen
'(C) In covalent compound, fluorine can form single bond while oxygen forn
(D) Fluorine stabilises lower oxidation states
97. Oxidation of nialeic acid by KMnO4 will give:
(A) n-ieso-tartariC acid (B) iS, 2S-tartaric acid
(± )-tartaric acid (D) 1R, 2R-tartaric acid
(C)
98. Flint glass is consisting of:
(A) Na 2O.CaO.6SiO 2 (B) SiO2.Na2O.CaO.K20.B203.M2
(C) K20.PbO.6SiO2 (D) K20.CaO.6SiO2
99. Which of the following is artificial radioactive series?
235 206
82 Pb (D)
92U 82 Pb (C) 238
207 -
(A) 2 Np —* 2 Bi (B)
40
Text of page 46
100. Crystal Field stabilisation energy for high spin d5 octahedral complex is
(A) —1.2 (B) Zero (C) —0.6 (D) —1.6
101. The specific rotation of pure enantiomer is + 12°. What is the percentage compositic
enantiomers in a mixture whose specific rotation is + 7.2°?
(A) 75% (+) and 25% (—) (B) 60% (+) and 40% (—)
(C) 87.5% (+) and 12.5% (—) (D) 80% (+) and 20% (—)
102. Readings for absorbance in spectrometric analysis of iron with 1, 10-phenanthro
0.084, 0.089 and 0.079. What will be Standard Deviation?
(A) 0.005 (B) 0.0025 (C) 0.0005 (D) 0.05
103. Which of the following is not precipitated as suiphide by passing H2S in pri
concentrated HC1?
(A) Lead (B) Copper (C) Cadmium (D) Arsenic
104. The correct order of the 0-0 dissociation energy is
(A) °2> 02 > o;• >p (B) 0>0 >0>0
(C) 0>'02 > 0 . >0 (D) 0> b > 02 > 02
105. The calibration curve in spectroflurimetric analysis becomes non-linear when:
(A) concentration of analyte is high
(B) molecular weight of analyte is high
(C) intensity of light source is high
(D) molar absorptivity is high
106. E° for the cell Zn Zn2 (aq) Cu2 (aq)l Cu is 1.18 Vat 25°C, the equilibrium cons
reaction :
Zn + Cu2 + (aq) Cu + Zn2 + (aq) is of the order of:
(A) iO° (B) 1028 (C) j+17 (D) 10+18
107. The orbital with I angular node and 1 radial node is
(A) 3p (B) 5f (C) 8d (D) 5d
42
Text of page 48
108. For a concentrated solution of weak electrolyte AB of concentration C, the degre
dissociation a is given as
(B) a = Keq C/ (xy)
(A) a = JK eq /C(x + y)
(D) a(Keq/CX+Y_l xX ijy)l/(x+V)
(C) aKeq /C''
109. The product formed in the following reaction is:
(i) NaH
+ PPh3
Br
(A) (B)
(C) (D)
OH
j
110. The number of phase component for aqueous solution of glucose is:
(B) 2 ,.(C) 0 (D) 3
(A) I
111. Aniline is less basic than the pyridine because
(A) nitrogen atom in aniline has sp3 hybridised orbitals
(B) in aniline there is a considerable electron delocalisatiort from N to ring, providir
delocalisation energy
(C) nitrogen atom of pyridine has sp2 hybridised orbitals
(D) pyridine is example of secondary amine
44
Text of page 50
reaCtiOfl to yields:
erg0es Vilsme
112. Fer0Ce
COOS
OCOC3
(B)
Fe
(A')
CI-120H
Cl-jO
(D)
(C)
lWNMl spectra of the cotnPr
- ti
- rn
''
is:
-
\.n ester with the oleCUaT iH) i.3
il3. recorded on 400 Mz spec0et and its
ijMR (400 MHZ, CDCI3) : 4. (d, 2H) 2.6 (q 2H), 2.046
0.85 (d, 6H) pp
cre of copou is:
The coect 5u
(p),
(A)
0
(D)
(C)
errfledate io1vel in the f0i1OWing reaCti0fl is:
114. The rea1'tt
N" (D) a
1-1 (C) a carbai0fl
an aryefle
(B)
(,k) a free -radical
46
Text of page 52
115. Which one of the following statement is not correct? 1H-NMR
DiastereotOpic protons also giving same signals in
(A)
Physical and chemical properties of eriantiomerS towards chiral reagents are different
(B)
1H-NMR
(C) EnantiotoPic protons are giving same signals in
Physical and chemical properties of enantiomerS towards achiral reagents are identical
(D)
116. The structure of (S)ibuprOfen is
cOOH
(B)
(A)
COON
(D)
(C)
Which one of the following is not a principle of green chemistry?
117.
(B) Use of non_renewable feed stocks
(A) Use of catalyst
(D) Atom economy
(C) Reduce derivatives
Which one of the follow,ing is èlctro-ana1Ytical technique?
118.
(B) DTA
(A) DSC
(D) Potentiometry
(C) Laser flame analysis
119. Thin layer chromatograPhi technique is example of:
(B) Partition chromatography
(A) Exclusion chromatography
(D) Ion exchange chromatograPhY
(C) Gas solid chromatograPhY
42 will
Which of the following combination of orbitals for hybridisatiOn for MnO
120.
tetrahedral symmetry?
(B) s, p,, P
(A) s, d,
(D s, d, dz2
(C) s, dz2, dx2 — y2.
48
Text of page 54
121. For a first order reaction, the time required for 87,5% of the reaction to take place ne
(A) 5 times that required for half of the reaction
(B) 3 times that required for half of the reaction
(C) 2 times that required for half of the reaction
(D) 3 times that required for two third of the reaction
122. What will be wavelength of resonance line of sodium atom if excitation energy of the resi
level is 2.1 eV? (Given h='1.233O eV. p.m)
(B) 560 nm (C) 580 nm (D) 587.2 nm
(A) 597.0 nm
123. Mn3O4 and Fe3O4 are:
(A) Mn3O4 normal spinel and Fe3O4 inverse spinel
(B) Mn3O4 inverse spinel
(C) Fe3O normal pinel
(D) Mn3O4 inverse spinet and Fe3O4 normal spinel
124. The diene and dienophile would be used for the synthesis of following compound:
Cl
H
C'
H,C1 HvC1
(A) and I (B) and ,JTN
H"C1 H Cl
• H,-CI H-Cl
(C) and I (D) and I
C1'H H'Cl
Text of page 56
125. The p.roducf formed in the following reaction is:
0
HSO4
\ / HC(0Me)3, MeOH
R
(A) MeO ° (B) Me0N'°'H
R
(C) MeO (D) MeO
o
126 A particle in three dimensional ubiL box of length 'L' has energy of 14h2
degeneracy
8mL2 The
of the state is:
(A) 9 (B) 3 (C) 6
127. Which one of the following statement is not correct for JR analysis of anthl 1
(A) 10 Amine (RNH2
) has H-N-H doublet at about 3300 cm 1
(B) 2° Amine (R2NH) has a single peak at about 3300 cm 1
(C) 30 Amine (R3N) has a no peaks at about 3300 cm 1
(D) 30 Amine (R3N) has a single peak at about 3300 cm
128. Art example of inorganic polymer is:
(A) Natural rubber (B) Silicon rubber (C) Nylon (D) Polystyrene
129. The substitution of i5-Cp group with nitric oxide is easiest for:
(A) 115-Cp2Ni (B) -CpCoCl (C) i5-Cp2Fe (D) i-Cp2Co
C
52
Text of page 58
13O Which one of the following compound is an optically active?
H H3C
H
'4,.
(B) H
(A) H3c1' C' 3C " Cl
CH3 02N
(C) (D)
HO2N
131. Hot concentrated sulphuric acid is a moderately strong oxidising agent. Which of the following
reaction does not show oxidising behaviour?
(A) MgF2 + H2SO4 — MgSO4 + 2HF
(B) Ag + 2H2SO4 —* AgSO4 + SO2 + 2H20
(C) C + 2H2SO4 -.4 CO2 + 2S02 + 2H20
(D) 3S + 2H2SO4 — 3S02 + 2H20
132. Which one of the following does notact as a oxidising agent?
(A) KBrO3 (B) K2Cr2O7
(C) K4Fe(CN)6 (D) (NH4)2Ce(NO3)6
133. Hypsochromic shift in IJV-VIS spectroscopy is:
(A) A shift to lower energy or longer wavelength
(B) An increase in intensity
(C) A shift to higher frequency or shorter wavelength
(D) A decrease in intensity
134. The halide of the following metals is soluble in water:
(B) Ag' (C) Cu (D) Rb
(A) Au
135. The correct Gibbs Helmholtz equation is:
(AA _(U/
(A) (B)
/T 2
(=v
(C) = H + T() (D) 'ap )T
54
Text of page 61
136. A certain radioactive isotope zXA (t112 = 50 days) decay to z - yA . If I mole of zXA kept in
2
sealed container, how much He gas will accumulate at STP in 100 days?
(A) 44.8 L (B) 33.6 L . (C) 22.4 L (D) 11.2 L
i37. The correct expression in SI system relating to equivalent conductanc (X e), specific
conductance (K) and equivalent concentration (C) is
(A) Xr (B) xc = )< 10-6
K K
(C) x=—x i - (D) X( = X 10
C C
138. Major product formed in following reaction is:
1.Li, NH3(I), THF,
t-BuOH (1 equiv.)
2. BrCH2CH2CI-12C1
CN CN
CH2CH2CH2CI
(A) CH2CH2CH2Br (B)
'OCH3 OCH3
CN CN
CH2CH2CH2Br
(C) (D)
OCH3 OCH3
139. The K5 of AgBrO3 and Ag2SO4 are 5.5x10 5 and 2x10 5 respectively, the relationship
between solubilities of these are:
(A) SAgBro3 SAg2Bro4 (B) SAgBro3 = SAg2Bro4
(C) SAgBro3 < SAg2Bro4 (D) SAgBro3 > SAg2Bro4
140. Which one of the following is antibacterial drug?
(A) Ciprofloxacin (B) Actinomycin D (C) Mefloquine (D) Acyclovir
141. Poly Pispersity Index (PDI) is:
(A) M/M11, (B) M1 ,/M (C) M, - M (D) M 4, x
56
Text of page 63
142. The major product formed in the nitration of 4-bromotoluene is:
(A) 1-Methyl-2, 4-dinitrobenzene
(B) 1-Bromo-4-methyl-2, 3-dinitrobenzene
(C) 1-Bromo-4-methyl-2, 6-dinitrobenzene
(D) 1-Bromo-4-methyl-3, 6-diriitrobenzene
143. In a hydrogen atom the degeneracy of energy level with n = 4 (n = principal quantum number)
is:
(A) 32 (B) 18 (C) 16 (D) 4
144. Which of the following compound is the example of combination of hard acid and hard
base?
(A) HgCO3 (B) CuS (C) CaS (D) MgCO3
145. What property must a nucleus have to exhibit nuclear magnetic rsonance?
(A) The nucleus must have protons and neutrons
(B) The nucleus must have protons
(C) The nucleus must have an odd number of protons and/or neutrons
(D) The nucleus must have an even number of protons and neutrons
146. Product (Y) formed in the following reaction sequence is:
(i) Me2CuLi, TI-IF, — 78°C (ii) OC, 15 mlii
(iii) H,H2O
(A) (B)
OCuMe
(D)
58
Text of page 65
0
147. For the reaction A + B —* product it is observed that:
(I) On the doubling the initial concentration of A only, the rate of reaction is increased by
factor of 4 and
B, the rate of reaction is
(II) On the doubling the initial concentration of both A and
increased by factor of 8.
The order of reaction is
(C) Second (0) First
(A) Third (B) Zero
148. Which of the following is correct?
(A) j1Zn(HzO)o12 ion is blue coloured
(B) Nickel dimethyiglyoxime is red in colour
(C) [Ni(CN)4]2 ion has tetrahedral shape
(D) [Cu(NH3)6]2 is colourless ion
149. IC50 value is:
(A) frequently used as a general indicator of substance's acute toxicity
(B) represents structure activityreIationshiP of drug
(C) half maximal inhibitory concentration
(D) amount of an ingested substance that kills 50% of a test sample
150. The term symbol for d7 system in ground state is
(C) 2F312 (D) 2P312
(A) 2S3 (B) 4F912
-oOo-
60
Text of page 67
SPACE FOR ROUGH WORK!
62
Text of page 68
SPACE FOR ROUGH WORK / T4 %
Text of page 69
4. The Candidate must put his/her signature in }-
spaces using blue or black ball point pen. lindi as well as in English (not in capital letters) in the prescribed
C. Process for Filling up Part-2 of the OMR Answer-Sheet:
3*.wa1tw1T_2 *ftwiq1:
1. Answer-sheet is of OMR type to be read by computer scanner.
wq,R T R! t1f II1F t I
2.
The questions are of multiple-choice type. Each question is provided with 4 options, out of which one
option is the most appropriate. The candidate must darken the appropriate circle provided in front of the
question number using blue/black ball point pen only.
MIiI
ci'ii 3Tff
Example: If correct answer for any Question is choice 'B', then darken the circle in front of that question
as shown below:
dUI:
3. (a) The circles, as described in C.-2 above, are to be darkened by using Blue/Black Ball Point Pen only.
ITT C-2i '3T{T
1'c,I c*vfFU 9TtI
(b)The shading should be dark and should completely fill the circle.
(c) Only one circle corresponding to the most appropriate answer should be darkened as shown below:
1.11 4T11Tt:
Correct Method
Wrong Methods
i:1
© C'®© © ©
Note : CARE MUST BE TAKENNOT TO DAMAGE THE OMR ANSWER SHEET IN THE PROCESS
OF DARKENING APPROPRIATE CIRCLES.
ait.aii. Ti .sq,qf ii
at1Tt jfft
(d) The candidates must fully satisfy himself/herself about the accuracy of the answer before darkening
the appropriate circle, as no change in answer once marked is allowed. Use oferaser or whitener/
correction fluid on the OMR Answer Sheet is not permissible because the OMR Answer Sheets are
machine gradable and it may lead to wrong evaluation.
. r ir j, ir
ir:ft , ir gri -ir uir t 3 j ft t
64
1
Text of page 71
Page 1 of 1
BIHAR STAFF SELECTION COMMISSION
VETERINARY COLLEGE CAMPUS, Patna-14
ADV. NO.-180101 16, UTPAD RASA VAN PARIKSHAK
Model Answer
SUBJECT :- CHEMISTRY.
The model answers of question no.1. To 150. of the test Booklet No. 400313 of AD V.
NO.-18010 116, UTPAD RASAYAN PARIKSHAK are given below.
Q.NO MODEL Q.NO MODEL Q.NO MODEL Q.NO MODEL Q.NO MODEL Q.NO MODEL
ANSWER ANSWER ANSWER ANSWER ANSWER ANSWER
1. B 26. B 51. B 76. A 101. 0 126. C
2. B 27. D 52. B 77. A 102. A 127. C
3. C 28. C 53. C 78. B 103. C 128. B
4. B 29. B 54. B 79. A 104. C 129. A
5. A 30. D 55. A 80. B 105. A 130. A
6. D 31. A 56. B 81. B 106. A 131. A
7. B 32. C 57. D 82. D 107. A 132. C
8. C 33. A 58. A 83. D 108. D 133. C
9. D 34. C 59. C 84. B 109. 0 134. D
10. A 35. C 60. A 85. D 110. B 135. C
11. D 36. D 61. C 86. D 111. B 136. B
12. C 37. B 62. 0 87. C 112. C 137. D
13. D 38. B 63. B 88. B 113. C 138. B
14. B 39. C 64. B 89: D 114. B 139. C
15. B 40. C 65. D 90. B 115. A 140. A
16. A 41. A 66. C 91. C 116. D 141. B
17. A 42. A 67. 0 92. B 117. B 142. B
18. C 43. D 68. B 93. C 118. D 143. C
19. B 44. B 69. D 94. B 119. B 144. D
20. C 45. A 70. B 95. D 120. A 145. C
21. C 46. A 71. D 96. C 121. B 146. B
22. D 47. C 72. D 97. A 122. D 147. A
23. D 48. A 73. C 98. C 123. A 148. B
24. B 49. C 74. 0 99. A 124. C 149. C
25. B 50. A 75. C 100. B 125. D 150. BOfficial key not published for this paper.
Page 1 of 71
Source: Bihar Staff Selection Commission. Question paper published by Bihar Staff Selection Commission.