TS SET 2018: Paper II, Chemical Sciences
Text of page 1
Subject Code Subject
Question Booklet Number
A-02-18 Chemical Sciences
hALL tICKET number PaPER
ii
OMR Sheet Number nUMBER OF qUESTIONS
100
dURATION mAXIMUM mARKS nUMBER OF pAGES
2 hOUrs 200 24
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H ere
rite
W
Not
Do
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5. The statements regarding hydrides of 7. Match the following and choose the
VI group are correct answer
i. The order of volatility i. UF6 a. At. No. 101
H2O < H2Te < H2Se < H2S ii. Am241 b. α -particles
ii. The order of boiling point iii. Pu c. At. No. 105
H2O > H2Te > H2Se > H2S
iv. Un-nil-unium (Unu) d. Octahedral
iii. The order of bond angles
e. Nuclear fuel
H2O > H2S > H2Se > H2Te
(A) i – e, ii – d, iii – a, iv – c
The correct combination is
(B) i – b, ii – d, iii – c, iv – a
(A) Only i
(C) i – d, ii – b, iii – e, iv – a
(B) ii and iii
(D) i – b, ii – e, iii – d, iv – a
(C) i and iii
8. Tanabe-sugano diagram is constructed
(D) i, ii and iii
by taking
6. Naturally occurring U contains three (A) E B v s ∆ 0 B
isotopes, they are
(B) Molar absorbance v s υ (cm–1)
(A) U237 (99.3%), U235 (0.70%) and
(C) E v s ∆ 0
U239 (traces)
(D) log ε v s λ nm
238 235
(B) U (99.3%), U (0.70%) and
U234 (traces) 9. The 19F NMR spectrum of WF6L shows
(C) U238 (0.70%), U235 (99.3%) and (A) one line only
U234 (traces)
(B) two lines with 1 : 1
(D) U238 (99.3%), U235 (traces) and
(C) three lines with 4 : 1 : 1
234
U (0.70%)
(D) three lines with 3 : 2 : 1
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10. What is the number of vibrational degrees 13. Match the following
of freedom in C6H5 – CH2OH ? Column I Column II
(A) 25 i. [Ni(acac)2 (pph3)2] a. Branched
(B) 27 alcohols
(C) 42 ii. [H Co(CO)4] b. Straight
chain
(D) 58 alcohols
iii. [Rh (H) (CO) (pph3)2] c. Cyclo-
11. In Mossbauer spectroscopy, spin-paired oligomerizations
Fe(III) and spin-free Fe (III) complexes
iv. [Rh (CO)2 I2] d. Acetic acid
exhibit synthesis
(A) spherical and axial symmetry with (A) i – c, ii – a, iii – b, iv – d
1, 1 signals
(B) i – d, ii – b, iii – c, iv – a
(B) Axial and spherical symmetry with (C) i – a, ii – b, iii – c, iv – d
2, 1 signals
(D) i – b, ii – c, iii – d, iv – a
(C) Spherical and axial symmetry with
1, 2 signals 14. Identify the process against their
reactions
(D) Axial and spherical symmetry with
1, 2 signals i. Insertion a. [RhCl (pph3)3] + H2
ii. Oxidative b. [L4Rh(H) (R)] →
addition RhL4 + R – H
12. Which of the following is isolobal with
−
CH2 ion ? iii. Isomerization c. [L3 Rh(CO) (R)]
→ [L3Rh – COR]
(A) CH+, Co-Cp, Ir(CO)3 and CH3
iv. Reductive d. R – CH2– CH = CH2
+
(B) CH , [Ir (CO)3], [Cr(CO)2Cp] and P elimination → R – CH = CH – CH3
2
(C) [Co(CO)Cp], S, CH and (A) i – d, ii – b, iii – a, iv – c
[Cr(CO)2Cp] (B) i – c, ii – a, iii – d, iv – b
(D) Mn(CO)5, Fe ( CO )5 , [Cp–Fe(CO)2]
+
(C) i – c, ii – b, iii – d, iv – a
and CH3
(D) i – d, ii – b, iii – c, iv – a
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15. The geometrical isomers of the type 19. Which of the following correctly places
[Pt A2X2] are distinguished by the ligands in their order with respect to
(A) Ring test ∆ 0 values
– – − –2
(B) Chromyl chloride test (A) F < Cl < N3 < O
–2
(C) Silver nitrate test −
(B) S < OH < CN < pph3
−
(D) Kurnakov test –
(C) I < H2O < en < py
–
16. Choose the correct order of d-orbital (D) I < H2O < py < en
splitting in a trigonal bipyramidal
geometry 20. A drunken person was asked to blow
(A) dz2 > dx2 − y2 , dxy > dxz , dyz a glass tube packed with acidified
potassium dichromate. The change in
(B) dz2 > dxz , dyz > dx2 − y2 , dxy
colour of the material from orange to
(C) dxz , dyz > dx2 − y2 , dxy > dz2
green confirmed the drinking of Alcohol.
(D) dx2 − y2 , dxy > dz2 > dxz , dyz It is due to
17. In bacterial rubredoxin, the number I. The oxidation of alcohol with reduction
of iron atoms, sulphur bridges and of dichromate to chromium (III)
cysteine ligands are
II. Complex formation of alcohol and
(A) 4, 4, 4 dichromate.
(B) 2, 2, 4
III. Change in the coordination number
(C) 2, 2, 2 of chromium.
(D) 1, 0 ,4 Which of the following statements given
above is/are correct ?
18. Itai Itai disease is due to
(A) I only
(A) Hg poison
(B) II only
(B) H3CHg poison
(C) III only
(C) Pb poison
(D) Cd poison (D) II and III
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21. In reverse phase chromatography, the 24. Find the symmetry point groups for
stationary phase is made
Ethane in eclipsed and staggered
(A) Hydrophobic non-polar
conformations.
(B) Hydrophilic polar
(C) Either non-polar or polar (A) C3v, D3h
(D) Polar head and non-polar tail
(B) D3h , C3h
22. Which reaction is an example of chain (C) D3h, D3d
reaction ?
231 (D) D3h, D3
U → 2 He + 90 Th
4
(A) 235
92
75
(B) 34 Se → 35 Br + e−1
75
25. In gas liquid chromatography, when films
I →
123 123
(C) 53 53 I + energy
142 91 are used in the interior of capillary column,
U + 0n →
1
(D) 235
92 56 Ba + 36 Kr + 3 10 n
then what is the Eddy diffusion ?
23. Given the character table of the point (A) Greater than 1
group C3V
(B) Less than 1
E 2C3 3 σ V
A1 1 1 1 z (C) Zero
A2 1 1 –1
(D) Less than zero
E 2 –1 0 (x, y)
Consider the reducible representation,
Γ 26. The main buffer system of the human
E 2C3 3 σ V blood is
+
Γ 6 3 0 (A) NH2 CONH2 – NH2 CONH
_
Its irreducible components are (B) H2 CO3 – HCO3
(A) E + 2A1 + 2A2 −
(C) CH3COOH – CH3COO
(B) 2E + A1 + A2
2−
(C) 3A1 + 3A2 (D) H2CO3 – CO3
(D) E2 + 2A1
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27. Retention volume can be obtained by 30. Graphene is a
finding the products of which of the
following parameters ? (A) Wide band-gap semiconductor
(A) Dead time and total porosity (B) Gapless-band semiconductor
(B) Retention time and volumetric flow
(C) Not a semiconductor but behaves like
rate
graphite
(C) Adjusted retention time and volumetric
flow rate (D) A narrow band-gap semiconductor
(D) Retention time and total porosity
31. Potential of air pollution increases
28. Which of the following oxides finally when the ventillation coefficient is
dissolve in water to cause acid rains ?
(A) > 11,000 m2/s
(A) NO, NO2
(B) 3,500 m2/s
(B) NO2, SO2
(C) NO2, SO3 (C) < 6,000 m2/s
(D) N2O5 , SO3 (D) 7,600 m2/s
29. Which statement is correct ? 32. Match the objects in Part A with their
a. All tetrahedral complexes are high size in part B
spin, p > ∆t.
Part A Part B
b. Square planar complexes are
usually low spin and ∆sp > p. i. Nanoshell a. 100 nm
c. All tetrahedral and square planar ii. Hydrogen atom b. 2000 nm
complexes are usually high spin
and p > ∆t and ∆sp. iii. E.coli bacteria c. 90 nm
d. All octahedral complexes are high iv. Transistor d. 0.1 nm
spin and p < ∆ 0
(A) i – a, ii – c, iii – d, iv – b
(A) a and b are correct
(B) i – a, ii – d, iii – b, iv – c
(B) b and c are correct
(C) a and c are correct (C) i – b, ii – a, iii – c, iv – d
(D) b and d are correct (D) i – c, ii – d, iii – b, iv – a
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33. Which of the following method is used 36. Which of the following are intrinsic
to make both nano-particles and properties ?
nano-powders ? 1. Specific rotation
(A) Chemical vapourization method 2. Boiling point
(B) Sol-gel method 3. Chemical potential
4. Pressure
(C) Ball-mill method
(A) 1, 2
(D) Plasma arching
(B) 2, 3, 4
34. According to Huckel Molecular Orbital (C) 3, 4
Theory (HMO) the possible energy in (D) 1, 2, 3, 4
terms of Coulombic ( α ) and exchange
(β ) integrals are 37. “For centrosymmetric molecules, any
vibration which is IR active is Raman
(A) ( α + β ), α , (2 α + β ), (2 α – β ) active vice-versa” represents
(A) Frank – condon principle
(B) ( α + 2β ), 2 α , ( α – 2β ), (2 α + β )
(B) Stark effect
(C) ( α + 2β ), α , α , ( α – 2β )
(C) Mutual exclusion principle
(D) α , α , ( α + β ), ( α + 2β )
(D) Doppler effect
35. The ESR spectrum of Triphenyl methyl 38. Assertion (A) : If (dECell/dT) p > 0 for a
radical consists of cell reaction, then ∆S is + ve.
Reason (R) : ∆S = nFT (dE/dT).
(A) 25 lines
(A) Both A and R are true and R is the
(B) 75 lines correct explanation of A
(C) 196 lines (B) Both A and R are true and R is not
the correct explanation of A
(D) 27 lines (C) A is true but R is false
(D) A is false but R is true
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39. Only one signal is present in the PMR 42. At what angles for the first order diffraction,
or NMR spectra of spacing between two planes respectively
(A) C3H4, C3H6 λ
are λ and ?
2
(B) C4H6, C5H12
(A) 0° , 90°
(C) C3H8, C2H6O
(D) C4H6, C3H18 (B) 30° , 90°
(C) 90° , 0°
40. Rotational Raman Spectrum is not
possible for (D) 90° , 30°
(A) CCl4
(B) CO 43. The X-rays of wavelength equal to
(C) HCl 0.134 nm give a first order diffraction
(D) N2 from the surface of a crystal when the
value of θ is 10.5°. Then the distance
41. Which is true among the following
about collids ? between the adjacent planes in the
1. Smaller the gold number greater the crystal is (sin 10.5° = 0.1822)
protective power.
(A) 367 nm
2. Lesser the valency of the coagulating
ion, the greater the coagulation (B) 3.67 nm
power.
(C) 0.0367 nm
3. Charge on the colloidal solution is
due to preferential adsorption of (D) 0.367 nm
either positive or negative ion which
is common and present in excess.
44. Number average molecular mass
4. Emulsion is dispersion of one liquid
into another which are completely of polymers can be determined by
miscible. following method
(A) 1, 2 (A) light scattering
(B) 1, 3
(B) osmometry
(C) 2, 4
(C) viscometry
(D) 3, 4
(D) sedimentation method
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45. Standard deviation is
49. A transition for which first derivative
2
(A) (variance)
1
of the chemical potential with respect
2
(B) (variance) to temperature is continuous, but the
1
3
(C) (variance) second derivative of the chemical
variance
(D) potential with respect to temperature is
2
discontinuous is classified as
46. The number of significant figures in
0.00320 is
(A) First order phase transition
(A) Five
(B) Six (B) Second order phase transition
(C) Four (C) Zero order transition
(D) Three
(D) Third order transition
47. ∆G° and ∆H° for a reaction at 300 K
is – 72.8 kJ mol–1 and – 42.8 kJ mol–1
50. In a ground canonical ensemble all the
respectively. ∆G° for the same reaction
at 320 K is systems have constant
(A) – 30.0 kJ mol–1 1. Volume
(B) + 30.0 kJ mol–1
2. Chemical Potential
–1
(C) 11.8 kJ mol
3. Energy
(D) – 74.8 kJ mol–1
4. Temperature
48. For a reaction A → B, Ea = 20 kJ/mol and
∆H = 10 kJ/mol. Energy of activation of (A) 2, 3
B → A is
(B) 3, 4
(A) 25 kJ mol–1
(B) 10 kJ mol–1 (C) 2, 4
(C) 5 kJ mol–1
(D) 1, 2
(D) – 25 kJ mol–1
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51. The average position of a particle in 55. Average distance for 2s orbital of
one dimensional box of length L is He+ is
(A) L (A) 1A°
(B) L /2
(B) 2A°
(C) 2L
(C) 3A°
(D) 12L
(D) 4A°
52. For a two component system the
reduced phase rule equation is 56. The radial function ‘R’ depends on
(A) F = 4 – P 1. n
(B) F = 3 – P 2. l
(C) F = 2 – P 3. m
(D) F = 1 – P 4. s
(A) 1, 2
53. Identify the correct energy order of
equivalent ionic conductance of the (B) 1, 4
following
(C) 2, 3
(A) Li+ < Na+ < K+ < Rb+
(B) Li+ > Na+ < K+ < Rb+ (D) 3, 4
(C) Li+ > Na+ > K+ > Rb+
57. For distinguishable independent
(D) Li > Na < K > Rb
+ + + +
molecules, the relationship between
canonical partition function (Q) and
54. The point group symmetry of the free molecular partition function (q) is
nitrate ion and BF3 molecule are
(A) Q = q/N
(A) C3v, C3h
(B) D3h, D3h (B) Q = qN
(C) C2v, D2h (C) Q = q
(D) D2h, D3h (D) Q = q/N!
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58. Which of the following transition require 61. The entropy of all perfect crystalline
the least energy ? substances is zero at T = 0°C
∗
(A) n → π represents
∗
(B) π → π (A) First law of thermodynamics
∗
(C) σ → σ (B) Zeroth law of thermodynamics
∗
(D) n → σ (C) Second law of thermodynamics
(D) Third law of thermodynamics
59. Given Ag+/Ag = + 0.80V
Co2+/Co = – 0.28V 62. Which of the following are, path
Cu2+/Cu = + 0.34V functions ?
Zn2+/Zn = – 0.70V 1. Internal energy
2. Enthalpy
The most reactive metal which
displaces other metals from their salts 3. Work
in solution is 4. Heat
(A) 1, 2
(A) Ag
(B) 2, 3
(B) Cu
(C) 3, 4
(C) Co
(D) 1, 4
(D) Zn
63. According to Lindemann mechanism
60. Collision theory of reaction rates
of unimolecular reaction the observed
satisfactorily explains order at high concentration is
(A) First order reactions (A) 1
(B) Any order reaction (B) 0.5
(C) Unimolecular reactions (C) 1.5
(D) Bimolecular reactions (D) 2.0
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64. What is the indicator electrode used 67. The IUPAC name of the following
in the potentiometric titration of AgNO3
compound is
Vs KCl ?
(A) Hydrogen electrode
(B) Platinum electrode
(C) Silver electrode (A) (R) – 3 – (prop – 2 – enyl) hex – 5 –
(D) Calomel electrode ynoic acid
(B) (R) – 3 – (prop – 2 – enyl) hex – 5 –
65. Chain transfer reagent in the formation
enoic acid
of polymer is
(A) CBr4 (C) (S) – 3 – (prop – 2 – ynyl) hex – 5 –
enoic acid
(B) CHCl3
(C) CH4 (D) (S) – 3 – (prop – 2 – enyl) hex – 5 –
ynoic acid
(D) CF4
66. Match List – I with List – II and select
68. The IUPAC nomenclature of the
the correct option from the codes given
below : following compound is
List – I List – II
a. D3h i. PCl3
b. C2h ii. Cis 1,2 dichloro ethylene
(A) (2E, 4E) – 3 – chlorohexa – 2,4 –
c. C3v iii. BF3
diene – 1,6 – diol
d. C2v iv. Trans-N2F2
(B) (2Z, 4E) – 3 – chlorohexa – 2,4 –
Codes :
diene – 1,6 – diol
a b c d
(C) (2Z, 4Z) – 3 – chlorohexa – 2,4 –
(A) i ii iii iv
diene – 1,6 – diol
(B) i iii ii iv
(D) (2E, 4Z) – 3 – chlorohexa – 2,4 –
(C) ii i iv iii
diene – 1,6 – diol
(D) iii iv i ii
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69. Identify the following : 72. Among the following the aromatic
compounds are
I.
I II III
II.
(A) I, II and III
(A) I Meso; II Enantiomer (B) I and III
(B) I and II are Enantiomers (C) I and II
(C) I Enantiomer; II Meso (D) II and III
(D) I and II are Meso compounds
73. Among the following compounds, the
70. The Gauche conformation of n-butane formyl anion equivalent is
possess
(A) 1, 4 – Dithiane
(A) Plane of symmetry and is achiral
(B) Acetylene
(B) C2 – axis of symmetry and is chiral
(C) Ethyl Chloroformate
(C) C2 – axis of symmetry and is achiral
(D) Acetone
(D) Plane of symmetry and is chiral
71. Amongst the following non-benzenoid 74. Addition of BH3 to carbon-carbon
aromatic compounds which is π rich ? double bond is
(A) Markovnikov syn addition
(B) Antimarkovnikov syn addition
I II III
(C) Markovnikov anti addition
(A) I (B) III
(D) Antimarkovnikov anti addition
(C) II (D) I and III
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75. The correct order of acidity of the 77. Hell-Volhard-Zelinsky reaction is
compounds given below is conducted in the presence of
(A) Magnesium
(B) Phosphorus
(C) Zinc
(D) Iron
1 2 3
78. Identify the correct statements
(A) 2 > 3 > 1 regarding ‘X’ and ‘Y’ reactions.
(B) 3 > 1 > 2
+
H →
(C) 1 > 3 > 2
(D) 1 > 2 > 3 X
76. Match the following.
a. Beckmann i. Oxetane
Rearrangement Y
b. Paterno Buchi ii. Olefin a. is form is more reactive
b. trans form is more reactive
Reaction
c. anti group migration favors as such
c. Wittig reaction iii. Enamine is form is more reactive
d. Stork reaction iv. Caprolactum d. syn group migration favors as such
trans form is more reactive
(A) a – iv; b – i; c – iii; d – ii (A) a, d
(B) a – ii; b – iii; c – iv; d – i (B) b, c
(C) ‘a’ is correct but ‘d’ is not the correct
(C) a – iv; b – i; c – ii; d – iii explanation
(D) a – ii; b – iii; c – i; d – iv (D) ‘b’ is correct but ‘c’ is not the correct
explanation
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79. Identify the catalyst in the following 82. Identify the intermediate (X) and target
reaction. molecule (Y) in the following reaction.
Catalyst
+ → 1. Li NH3 BuOH
→
2.m − CPBA
X →Y
(A) Na in C2H5OH
(B) Pd (OAc)2
(A) X =
(C) Zn in AcOH
(D) n-BuLi
Y =
80. Predict the stereochemistry of the
product in the following reaction
OsO4 product.
R – CH = CH –R →
(B) X =
(A) Syn Diol
(B) Anti Diol
Y =
(C) Both (A) and (B)
(D) Epoxide
(C) X =
81. In the below sequence ‘X’ can be
X
C6H5 – CH = CH – CHO → Y =
C6H5 – CH = CH – CH2OH
(A) H2 | Ni
(D) X =
(B) Sn | HCl
(C) NaBH4
+ Y =
(D) K2Cr2O7 | H
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83. For the following three step conversion 85. The number of π electrons participating
of ‘X’ to ‘Y’, the appropriate sequence and the mode of cyclization in the
of reactions is following reaction are
heat
→
X
(A) 4 and CON rotatory
(B) 4 and DIS rotatory
(C) 6 and CON rotatory
(D) 6 and DIS rotatory
Y
86. Predict the stereochemistry of the product
(A) MnO2; (CH2OH)2/P – TSA; PCC in 1, 3 – sigmatropic rearrangement
(B) PCC; MnO2; (CH2OH)2/P – TSA of ‘carbon’ substituent under thermal
conditions.
(C) Jones reagent; (CH2OH)2/p – TSA;
MnO2 (A) inversion of configuration
(D) MnO2; (CH2OH)2/p – TSA; Jones (B) retention of configuration
reagent (C) Both (A) and (B)
(D) The reaction does not proceed
84. Absolute asymmetric synthesis means
(A) Synthesis of optically active 87. Amongst the following which will
compound from inactive one without undergo Diel’s Alder reaction ?
using optically active reagent
(A)
(B) Synthesis of optically active
compound from inactive one using
optically active reagent (B)
(C) Synthesis of optically active
compound from optically active (C)
one using optically active reagent
(D) Synthesis of optically inactive (D)
compound from optically active one
using optically active reagent
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88. What is the preferable site for electrophilic 90. Papaverine on oxidation with potassium
substitution reaction in isoxazole ? permanganate gives a ketone, which on
fusion with potassium hydroxide gives
(A) C – 3
(B) C – 4
(C) C – 3 and C – 5
(D) C – 3 and C – 4
89. The major product formed on nitration
of uridine followed by reduction with tin papaverine
and HCl is
(A) (A)
(B) (B)
(C) (C)
(D)
(D)
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91. Consider the following reaction 93. How many stereogenic centers are
sequence starting with α -pinene, present in cholesterol ?
identify the correct statement
alk. KMnO4
→ pinonic acid
α -pinene
A B
NaOH / Br
2→ pinic acid
C
(A) ‘A’ has a disubstituted double bond; (A) Seven
‘B’ and ‘C’ are dicarboxylic aicds (B) Six
(B) ‘A’ has a trisubstituted double bond; (C) Eight
‘B’ has a ketone and carboxylic acid (D) Nine
‘C’ is a dicarboxylic acid
(C) ‘A’ has a trisubstituted double bond; ‘B’ 94. In the IR spectrum, carbonyl absorption
band for the following compound
is a diketone and ‘C’ is a dicarboxylic
appears at
acid
(D) ‘A’ has a disubstituted double bond; ‘B’
is a diketone and ‘C’ is a dicarboxylic
acid
(A) 1770 cm–1 (B) 1690 cm–1
92. For estrone amongst the following (C) 1810 cm–1 (D) 1660 cm–1
statements which is true ?
95. Predict the appropriate 1H NMR
a. It has an aromatic ring chemical shifts for the protons A – D for
b. It has two hydroxyl groups the following compound.
c. It has one ketone and one hydroxyl
group
d. It is a steroidal harmone
(A) b, c, d
(A) A 5.7; B 6.8; C 3.9; D 2.1 ppm
(B) a, b, d
(B) A 6.8; B 5.7; C 2.1; D 3.9 ppm
(C) a, c, d
(C) A 6.8; B 5.7; C 3.9; D 2.1 ppm
(D) a, b, c
(D) A 5.7; B 6.8; C 2.1; D 3.9 ppm
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96. An organic compound having the 97. Match the following drugs with their
molecular formula C10H14 exhibited two medicinal activity.
singlets in 1H NMR spectrum and three a. 5-fluorouracil i. Anticancer
signals in 13C NMR spectrum. The
compound is b. Amoxicillin ii. Anti-
inflammatory
iii. Antibacterial
iv. Cholesterol
(A)
lowering
(A) a – iii, b – iv (B) a – i, b – iii
(C) a – ii, b – iii (D) a – i, b – ii
98. The heterocyclic compounds present in
the drug omeprazole are
(B) (A) Benzimidazole and pyridine
(B) Benzopyrazole and imidazole
(C) Benzoxazole and furan
(D) Benzisoxazole and pyridine
99. A non-haem iron containing protein is
(C) (A) Hemorythrin
(B) Myoglobin
(C) Hemocyanin
(D) Hemoglobin
100. Which one of the following is not a
green solvent ?
(D)
(A) Ionic liquid
(B) H2O
(C) MeOH
(D) EtOH
_________________
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Source: Telangana State Eligibility Test. Question paper published by Telangana State Eligibility Test.