CUSAT CAT 2023 Question Paper Chemistry PG

CHEMISTRY (PG)
(FINAL)

−1
1. For a reaction with an activation energy of 49.8 kJ mol , the ratio of the rate
−1 −1
constants at 600 K and 300 K, (k600/k300), is approximately (R = 8.3 J mol K )

(A) ln(10)
(B) 10
(C) 10 + e
10
(D) e

+ – –4 –1 –1 –4 –1 –1
2. The ionic mobilities of NH4 and HCO3 are 6 ⨯ 10 V s and 5 ⨯ 10 V s ,
+ –
respectively. The transport numbers of NH4 and HCO3 are, respectively

(A) 0.545 and 0.455
(B) 0.455 and 0.545
(C) 0.090 and 0.910
(D) 0.910 and 0.090

3. The ionic strength of a solution containing 0.008 M AlCl3 and 0.005 M KCl is

(A) 0.134 M
(B) 0.053 M
(C) 0.106 M
(D) 0.086 M

a
4. Mark-Houwink equation ([η]=KM ) is used for the determination of

(A) number-average molar mass
(B) weight-average molar mass
(C) viscosity-average molar mass
(D) z-average molar mass

5. The absolute temperature of a perfectly black body is increased to twice its value.
The rate of emission of energy per unit area will become

(A) 2 times
(B) 4 times
(C) 8 times
(D) 16 times

–12 –1
6. If the pre-exponential factor in the Arrhenius equation is 1.6 ⨯ 10 s , the value of
the rate constant at extremely high temperature will be close to
–12 –1
(A) 1.6 ⨯ 10 s
–12 –1
(B) 4.2 ⨯ 10 s
–9 –1
(C) 1.2 ⨯ 10 s
–6 –1
(D) 2.4 ⨯ 10 s

7. The degeneracy of an excited state of a particle in 3-dimensional cubic box with
energy 2 times its ground state energy is

(A) 1
(B) 2
(C) 3
(D) 4

d d2
8. Which of the functions below is the common eigen function of and 2
dx dx
operators?

(A) cos x
(B) kx
(C) e – x2
(D) eix

9. Metallic silver crystallizes in an fcc structure with a unit cell of length 40 nm. The
first-order diffraction angle of the X-ray beam from the (2, 1, 0) plane of silver is 30°.
The wavelength of the X-ray used is close to

(A) 11 nm
(B) 18 nm
(C) 25 nm
(D) 32 nm

10. The emf of an electrochemical cell, Cu|CuCl2(a1=0.01)||CuCl2(a2=0.1)|Cu, is close to

(A) 0.059 volts
(B) –0.059 volts
(C) –0.0295 volts
(D) 0.0295 volts

11. For a reaction, NO(g) + H2(g) N2(g) + H2O(g), the experimentally observed rate is
2
k[NO] [H2]. If the concentration of NO ([NO]) is doubled, and the concentration of
H2([H2]) is halved, what is the effect on the reaction rate?

(A) Rate will not change
(B) Rate will be doubled
(C) Rate will be halved
(D) Rate will be increased by four times

12. For a reaction A B + C, it is formed that the rate increases by a factor of 2.25 when
the concentration of A is increased by a factor of 1.5 at the same temperature. What is
the order of the reaction with respect to A?

(A) 1
(B) 1.5
(C) 2
(D) 2.25

k
1 → I  k
2 → P , the concentration of
13. For a sequence of consecutive reactions, A 
I obtained by steady-state approximation is

(A) k1[A]
(B) (k1 + k2)[A]
(C) k1k2[A]
k1
(D) [A]
k2

14. For a reaction 2A + B 3Z, if the rate of consumption of A is 2⨯10–4 mol dm–3 s–1
then the rate of formation of Z (in mol dm–3 s–1) will be

(A) 1⨯10–4 mol dm-3 s-1
(B) 1.5⨯10–4 mol dm-3 s-1
(C) 2⨯10–4 mol dm-3 s-1
(D) 3⨯10–4 mol dm-3 s-1

15. The Clausius-Clepyron equation is
∆
(A) =
∆

(B) =
∆ ∆
∆
(C) =
∆
∆
(D) = ∆

16. A Carnot engine with a low-temperature reservoir of 300K has an efficiency of 50%.
It is desired to increase the efficiency to 70%. By how much should the temperature
of the high-temperature reservoir be increased?

(A) 400K
(B) 600K
(C) 700K
(D) 1000K

1 −iφ
17. Probability density of a wave function,ψ (φ ) = e within 0 ≤ φ ≤ 2π is
2π

1
(A)
2π
1
(B)
2π
(C) 2π
(D) 1

 d   d 
18. The commutators of  x,  and  y,  are
 dx   dx 

(A) −1, 0
(B) 0, −1
(C) 0, 0
(D) −1, −1

19. The angular momentum operator of the z component ( Lz ) is

ℏ ∂ ∂ 
(A) y −x 
i  ∂x ∂y 

ℏ ∂ ∂ 
(B) y −x 
i  ∂y ∂x 

ℏ ∂ ∂ 
(C) x − y 
i  ∂y ∂x 

ℏ ∂ ∂ 
(D) x − y 
i  ∂x ∂y 

1 2
20. A system is represented by the wave function = Φ1 + Φ , where, Φ1 and Φ 2
3 3 2
are orthonormal to each other. If E1 and E2 are the eigenvalues of Φ1 and Φ 2
respectively, then the average energy expression of the system is

1 2
(A) E1 + E
3 3 2
1 2
(B) E1 + E2
3 3
E1 + E2
(C)
3
E1 + E2
(D)
2

L
21. For a particle in a 3-dimensional box with Lx = Ly = z = L , the energy expression
2
for E211 and E112 are

21h 2 3h 2
(A) and , respectively
32mL2 8mL2
6h 2 6h 2
(B) and , respectively
8mL2 8mL2
9h 2 9h 2
(C) and , respectively
32mL2 16mL2
9h 2 3h 2
(D) and , respectively
32mL2 8mL2

22. ∆H of a reaction is equal to slope of the plot

(A) ∆G versus T
(B) ∆G versus (1/T)
(C) (∆G/T) versus T
(D) (∆G/T) versus (1/T)

23. Isothermal reversible expansion (change in volume from V1 to V2, where V2 > V1) of a
(
gas, the change of system entropy ∆S sys is )
(A) nR (V2 − V1 )

(B) nR ( P2 − P1 )

V 
(C) nR ln  2 
V 
 1
P 
(D) nR ln  2 
P 
 1

 ∂U 
24.   for one mole of Vander Waals gas is
 ∂V T

1
(A)
(V − b)
(B) (V − b)
a
(C)
V2
V2
(D)
a

25. The rotational spectrum is not observed for

(A) HCl
(B) CH2Cl2
(C) H2O
(D) CH4

26. The energy required for a transition between the rotational levels J=1 and J=2 of a
molecule is (where B is the rotational constant of the molecule)

(A) B cm-1
(B) 2B cm-1
(C) 3B cm-1
(D) 4B cm-1

27. The transition energy expression for the hot band is (ωe and xe are the oscillation
frequency and anharmonicity constant, respectively)

(A) ∆ = (1 − 2 ) cm-1
(B) ∆ = (1 − 4 ) cm-1
(C) ∆ = 2 (1 − 3 ) cm-1
(D) ∆ = 3 (1 − 4 ) cm-1

28. Which of the following statement is CORRECT?

(A) Symmetric stretching mode of vibration of CO2 is IR active and Raman
inactive
(B) Symmetric stretching mode of vibration of CO2 is IR inactive and Raman
active
(C) Bending mode of vibration of CO2 is IR inactive and Raman active
(D) Asymmetric stretching mode of vibration of CO2 is IR inactive and Raman
active

29. Among the following, which electronic transition is NOT allowed?
1 1
(A) S0 P1
3 3
(B) S1 P2
3 3
(C) S1 P1
3 1
(D) S1 P1

30. On passing monochromatic light through a 0.04 molar solution in a cell of 2 cm
thickness, the intensity of the transmitted light was reduced to 50%. Calculate the
molar extinction coefficient.

(A) 3.76 lit mol-1 cm-1
(B) 4.0 lit mol-1 cm-1
(C) 1.88 lit mol-1 cm-1
(D) 2.0 lit mol-1 cm-1

31. Among the following photophysical processes, which one is the nonradiative process?

(A) Prompt Fluorescence
(B) Intersystem Crossing
(C) Delayed Fluorescence
(D) Phosphorescence

32. Given the equivalent conductances of sodium butyrate, sodium chloride and
hydrochloric acid as 83, 127, and 426 ohm-1cm2 at 25°C, respectively, at infinite
dilution. The equivalent conductance of butyric acid at infinite dilution is

(A) 382 ohm-1cm2
(B) 343 ohm-1cm2
(C) 299 ohm-1cm2
(D) 216 ohm-1cm2

33. In an enzymatic process, obeying the Michaelis-Menten kinetics, at the substrate
concentration extremely low and extremely high conditions, the reaction rate with
respect to substrate concentration will be

(A) zeroth order and first order respectively
(B) zeroth order for both cases
(C) first order and zeroth order respectively
(D) first order for both cases

34. In a random distribution of 10 particles between two boxes with equal probability, the
number of microstates in the macrostate (3,7) (3 particles are in one box and 7
particles are in another box) is

(A) 120
(B) 5
(C) 10/21
(D) 120⨯2-10

35. Elementary steps of a reaction are as follows
!
() + →2 , ( ) + ← 2 , ( )2 → ",

if steady state approximation is applicable to C, the rate of the product formation is
([A] and [B] are the concentration of A and B, respectively)

(A) proportional to ([ ][ ])
(B) proportional to [A][B]
(C) proportional to ([ ][ ])%
(D) independent of [A] and [B]

36. At what temperature, with pressure remaining unchanged, the root mean square
velocity of hydrogen will be double of its value at NTP?

(A) 273˚C
(B) 546˚C
(C) 819˚C
(D) 1092˚C

37. The equilibrium constant (Kp) for a reaction, PCl5⇄ PCl3 + Cl2, is 1.8. The pressure
necessary to obtain a 50% dissociation of PCl5 at 250˚C is

(A) 1.5 atm
(B) 1.8 atm
(C) 3.6 atm
(D) 5.4 atm

38. ( )
Which of the following equations is correct for the linear operator O ?

(A) OΨ = Ψ ∗
dΨ
(B) OΨ =
dx
(C) OΨ = Φ 2
1
(D) OΨ =
Ψ

39. If the reduced mass of a diatomic molecule is doubled without changing its force
constant, the vibrational frequency of the molecule will be

1
(A) times the original frequency
2
(B) 2 times the original frequency
1
(C) times the original frequency
2
(D) 2 times the original frequency

40. Considering the moment of inertia about the x, y and z axes, the CH4, NH3 and H2O
molecules are

(A) symmetric top, spherical top, and asymmetric top, respectively
(B) spherical top, symmetric top, and asymmetric top, respectively
(C) symmetric top, asymmetric top, and spherical top, respectively
(D) spherical top, asymmetric top, and symmetric top, respectively

41. The lowest possible energy of the simple Harmonic Oscillator is

(A) E0 = ℏω

1
(B) E0 = ℏω
2
(C) E0 = 0

3
(D) E0 = ℏω
2

42. The probability of finding a particle at ground state within the vicinity of the center
(0.5-0.01 nm to 0.5+0.01 nm) in a one-dimensional box of length 1nm is close to

(A) 0.01
(B) 0.02
(C) 0.04
(D) 0.1

43. The average speed of ideal gas molecules at 27°C is 0.3 ms-1. The average speed at
927°C will be

(A) 0.3 ms-1
(B) 0.6 ms-1
(C) 0.9 ms-1
(D) 3.0 ms-1

44. The edge length of the unit cell of NaCl is 564 pm. If the size of the Cl-1 ion is
181 pm, the size of the Na+ ion would be

(A) 101 pm
(B) 167 pm
(C) 202 pm
(D) 282 pm

45. Given that &'* ( /' = −0.441 volts, and &'* !(/' ( = 0.771 volts. The value of
&'* !( /' is

(A) −0.037 volts
(B) −0.111 volts
(C) −0.33 volts
(D) +0.33 volts

46. The chemical potential is expressed as

 ∂G 
(A) µ = −  
 ∂Ni T , P, N j
 ∂G 
(B) µ =  
 ∂Ni T , P, N j
 ∂G 
(C) µ = 
 ∂T  P, N
 ∂G 
(D) µ = 
 ∂P T , N

47. If a polymer sample consists of 30% molecules of molar mass 20,000 g/mol, 40%
molecules of molar mass 30,000 g/mol, and 30% of molecules of molar mass
,- ) is
60,000 g/mol, then weight average molar mass (+

(A) 1100 g/mol
(B) 36,000 g/mol
(C) 36,666 g/mol
(D) 43,333 g/mol

48. If a unimolecular surface reaction obeys the Langmuir adsorption isotherm at very
high pressure, the rate of the reaction (v) is

(A) independent of the pressure
(B) proportional to the pressure
(C) proportional to the square of the pressure
(D) inversely proportional to the pressure

49. The van’t Hoff equation is

d ln K p ∆H 0
(A) =
dT RT 2
d ln K p ∆G 0
(B) =
dT RT 2
d ln K p ∆H 0
(C) =
dT RT
d ln K p ∆G 0
(D) =
dT RT

50. Which of the following is NOT an intensive property of a system?

(A) Density
(B) Viscosity
(C) Entropy
(D) Temperature

51. Among the following, the compound that forms the strongest hydrogen bonding is
(A) HF
(B) HCl
(C) HBr
(D) HI

52. An organic compound having molecular formula C9H10O2 exhibits the following
spectral characteristics:
characteristics
1
H NMR: δ 9.72 (t, 1H), 7.1 (d, 2H), 6.7 (d, 2H), 3.8 (s, 3H), 3.6 (d, 2H)
IR: ~1720 cm‒1
The most probable structure of the compound is

(A)

(B)

(C)

(D)

53. The reaction of 2,4-dinitrofluorobenzene
dinitrofluorobenzene with hydrazine produces a yellow orange
solid X used for the identification of an organic functional group G.
G Then X and G,
respectively, are

(A) and carboxylic acid

(B) and aldehyde

(C) and aldehyde

(D) and carboxylic acid

54. Which one of the following options is best suited for effecting the transformation?

(A) MnO2
(B) DMSO, (COCl)2, Et3N
(C) Al(Oi-Pr)3
(D) Ag2O/NH4OH (Tollens Reagent)

55. The major product formed in the following reaction is

(A)

(B)

(C)

(D)

56. Nitration is an important example for aromatic electrophilic substitution reaction.
Major mononitration products of pyrrole and pyridine are,
are respectively

(Pyrrole) N
(Pyridine)
H N

(A) 2-nitropyrrole
nitropyrrole and 4-nitropyridine
4
(B) 3-nitropyrrole
nitropyrrole and 3-nitropyridine
3
(C) 2-nitropyrrole
nitropyrrole and 2-nitropyridine
2
(D) 2-nitropyrrole and 3-nitropyridine
3

57. Which among the following exhibit aromatic character?

I II III IV

(A) II and IV
(B) III and IV
(C) III only
(D) None of the above

58. The major product formed in the following reaction is

(A)

(B)

(C)

(D)

59. For the radical chain reaction below, the correct classification for step 2 and step 3 is,
respectively,

(A) chain propagating, chain terminating
(B) chain branching, chain terminating
(C) chain propagating, chain propagating
(D) chain propagating, chain branching

60. The ene-yne that produces a chiral compound upon treatment with Lindlar catalyst is

(A)

(B)

(C)

(D)

61. The amino acid with R configuration is

(A)

(B)

(C)

(D)

62. The rate of SN1 solvolysis of I - IV follows

(A) I > II > III > IV
(B) III > I > II > IV
(C) III > II >> I > IV
(D) IV > I > II > III

63. The more stable species in each pair of conformers are

(A) I and IV
(B) I and III
(C) II and IV
(D) II and III

64. Achiral stereoisomer(s) is (are) possible for

(A)

(B)

OH OH
H

(C) HO2C CO2H

OH
Cl
(D)

65. The major product formed in the following reaction is

(A)

(B)

(C)

(D)

66. The order of acidity of the given molecules in aqueous media is

(A) IV < I < II < III
(B) II < I < IV < III
(C) II < IV < I < III
(D) IV < II < I < III

67. The compound formed upon fusing an aliphatic amine with sodium metal in
Lassaigne’s test is

(A) NaNH2
(B) NaNO2
(C) NaCN
(D) NaN3

68. The major product formed in the following reaction is

(A)

(B)

(C)

(D)

69. “All Altruists Gladly Make Gum in Gallon Tanks”. The C-2 epimer of D-glucose is

(A) D-Mannose
(B) D-Altrose
(C) D-Galactose
(D) L-Glucose

70. The CORRECT order of stability for the following carbocations is

(A) I < III < IV < II
(B) III < II < IV < I
(C) II < IV < III < I
(D) IV < III < I < II

71. The CORRECT order of carbonyl stretching frequencies for the following
compounds is

(A) II < I < III < IV
(B) I < III < II < IV
(C) IV < II < III < I
(D) III < IV < II < I

72. The CORRECT statement about carbene is

(A) Singlet carbenes are negatively charged while triplet carbenes are positively
charged
(B) Carbene is an intermediate in Curtius rearrangement
(C) Carbene can insert into both σ and π-bonds
(D) Carbene is generated from amines on reaction with chloroform and acid

73. In the following sequence of reactions, the overall (%) yield of O is

(A) 61
(B) 85
(C) 74
(D) 68

74. Catalytic hydrogenation of the following compound produces saturated
hydrocarbons(s). The number of stereoisomer(s) formed is/are

(A) 1
(B) 2
(C) 3
(D) 4

75. Among the following compounds, the pair of enantiomers is

(A) I and IV
(B) I and III
(C) II and III
(D) III and IV

76. The product R in the following reaction is

(A)

(B)

(C)

(D)

77. The following conversion is carried out using

(A) hydroboration-oxidation followed by Jones oxidation
(B) Wacker oxidation followed by haloform reaction
(C) oxymercuration-demercuration followed by Jones oxidation
(D) ozonolysis followed by haloform reaction

78. The most basic amino acid among the following is

(A) tyrosine
(B) methionine
(C) arginine
(D) glutamine

79. The major product formed in the following reaction is

(A)

(B)

(C)

(D)

80. Among the following, the most stable conformation of meso-2,3-dibromobutane is

(A)

(B)

(C)

(D)

81. The major product formed in the reaction of butyronitrile (CH3CH2CH2CN) with
phenylmagnesium bromide followed by acidification is

(A)

(B)

(C)

(D)

82. An organic compound on reaction with 2,4-dinitrophenylhydrazine (2,4-DNP) gives a
yellow precipitate. It also gives silver mirror on reaction with ammoniacal AgNO3. It
gives an alcohol and sodium salt of a carboxylic acid on reaction with concentrated
NaOH. It yields benzene-1,2-dicarboxylic acid on heating with alkaline KMnO4. The
structure of the compound among the following is

(A)

(B)

(C)

(D)

83. The major product formed in the following reaction is

(A)

(B)

(C)

(D)

84. An organic compound P (C4H8O) is positive to Bayer’s test, but inert to sodium
metal. On treatment with conc. HCl, P gives CH3CH2Cl and CH3CHO. The structure
of P is

(A)

(B)

(C)

(D)

85. Aluminium complex of oxine is a common component in Organic Light Emitting
Diodes (OLEDs). Structure of oxine is

(A)

(B)

(C)

(D)

86. The major product isolated from the following reaction is

(A)

(B)

(C)

(D)

87. Identify the correct reagents and reaction sequence required for the following
transformation

(A) (i) NaBH4; (ii) H3O+
(B) (i) LiAlH4; (ii) H3O+
(C) (i) HOCH2CH2OH, H+; (ii) LiAlH4; (iii) H3O+
(D) (i) HSCH2CH2SH, H+; (ii) LiAlH4; (iii) H3O+

88. What is the IUPAC name for the compound shown below?

(A) 1-Bromo-3-chlorocyclohexene
(B) 2-Bromo-6-chlorocyclohex-1-ene
(C) 6-Bromo-2-chlorocyclohexene
(D) 3-Bromo-1-chlorocyclohex-1-ene

89. Calculate the λmax for the following diene in hexane solution.

(A) 273
(B) 259
(C) 232
(D) 217

90. The major product formed in the following reaction is

(A)

(B)

(C)

(D)

91. The reactivity of the enol derivatives towards benzaldehyde follows the order

(A) I > II > III
(B) III > II > I
(C) II > I > III
(D) I > III > II

92. The major product formed in the following reaction is

(A)

(B)

(C)

(D)

93. The correct statement for the following structures is

(A) 1, 2 and 3 are resonance structures
(B) 1 and 2 are resonance structures, whereas 3 is an isomer of 1 and 2
(C) 1 and 3 are resonance structures, whereas 2 is an isomer of 1 and 3
(D) 1, 2 and 3 are constitutional isomers

94. In 1H NMR spectrum of the given molecule, the correct order of chemical shifts ( δ )
of the labelled protons (HX, HY, HZ) is

(A) HZ > HX > HY
(B) HZ > HY > HX
(C) HX > HZ > HY
(D) HY > HX > HZ

95. Copper phthalocyanine is prepared by

(A) heating phthalaldehyde with CuCN at 100°C
(B) heating phthalic anhydrade with acetonitrile in the presence of anhydrous
CuSO4
(C) heating benzonitrile with CuCl at 220-250°C
(D) reaction between a mixture of benzaldehyde and pyrrole in reflexing propionic
acid in the presence of Cu(CN)2

96. The sequence of three steps involved in the following conversion is (respectively)

(A) (i) Friedel-Crafts alkylation; (ii) Reduction; (iii) Friedel-Crafts acylation
(B) (i) Friedel-Crafts acylation; (ii) Friedel-Crafts alkylation; (iii) Reduction
(C) (i) Friedel-Crafts acylation; (ii) Reduction; (iii) Friedel-Crafts alkylation
(D) (i) Friedel-Crafts alkylation; (ii) Friedel-Crafts acylation; (iii) Reduction

97. The major product S of the following reaction is

(A)

(B)

(C)

(D)

98. The mechanism of the following transformation involves

+ Sodium formate

(A) Aldol reaction and Cannizzaro reaction
(B) Aldol reaction and Claisen-Schmidt reaction
(C) Knoevenagel condensation and Cannizzaro reaction
(D) Stobbe condensation and Cannizzaro reaction

99. The appropriate reagents required for carrying out the following transformation are

(A) (i) succinic anhydride, AlCl3; (ii) Zn/Hg, HCl; (iii) polyphosphoric acid
(B) (i) maleic anhydride, AlCl3; (ii) H2N-NH2, KOH; (iii) H2SO4
(C) (i) succinic anhydride, FeCl3; (ii) LiAlH4; (iii) H2SO4
(D) (i) phthalic anhydride, F3B·OEt2; (ii) HS(CH2)2SH, H+; (iii) Raney Ni;
(iv) polyphosphoric acid

100. The structure of (2S,3R)-2-amino-3-hydroxybutanoic acid is

(A)

(B)

(C)

(D)

101. The CFSE of tetrahedral [CoCl4]2− is 8000 cm−1. The CFSE (in cm−1) for octahedral
[CoCl6]4− will be
(A) 16000
(B) 18000
(C) 20000
(D) 12000

102. The complexes of [Co(NH3)6] [Cr(CN)6] and [Co(NH3)6] [Cr(CN)6] are an example of
(A) linkage isomerism
(B) optical isomerism
(C) polymerisation isomerism
(D) coordination isomerism

103. In a square planar complex with ligands on x and y axes, the highest energy metal
d-orbital is

(A) d yz
(B) d 2
x − y2
(C) d xy
(D) d 2
z

104. What is the shape of XeF6 as per the VSEPR theory?

(A) Square pyramid
(B) Pentagonal planar
(C) Pentagonal bipyramid
(D) Square planar

105. Which of the following reagent is used in the extraction of aluminum from bauxite
(Bayer’s process)?

(A) NaCl
(B) Na2CO3
(C) Na2SO4
(D) NaOH

106. Producer gas is a mixture of

(A) CO2 + H2
(B) CO2 + N2
(C) CO + H2 + N2
(D) CO + N2

107. The bond angle of NO2+, NO2 and NO2− are respectively

(A) 115°, 180°, 134°
(B) 180°, 134°, 115°
(C) 134°, 115°, 180°
(D) 115°, 134°, 180°

108. Which of the following metal carbonyl will not obey the effective atomic number
(EAN) rule?

(A) Re2(CO)10
(B) W(CO)6
(C) V(CO)6
(D) Cr(CO)6

109. CN− is

(A) Soft acid
(B) Hard acid
(C) Hard base
(D) Soft base

110. Vitamin B12 is the coordination compound of

(A) Mg
(B) Co
(C) Fe
(D) Zn

111. The noble gas having ionization potential close to that of oxygen is

(A) Neon
(B) Argon
(C) Xenon
(D) Krypton

112. In the species O2, O2+, O2−, O22− the correct decreasing order of bond strength is

(A) O2 > O2+ > O2− > O22−
(B) O2+ > O2 > O2− > O22−
(C) O22− > O2− > O2+ > O2
(D) O2− > O22− > O2 > O2+

113. Zn, Cd, Hg have lower melting points than other d-block elements because of

(A) absence of metallic bonds
(B) presence of strong metallic bonds
(C) presence of completely filled shell
(D) they are not transition elements

114. The IUPAC name of Wilkinson’s catalyst is

(A) Bromotris(triphenylphosphine)rhodium(I)
(B) Chlorotris(triphenylphosphine)rhodium(I)
(C) Chlorotris(triphenylphosphine)palladium(I)
(D) Bromotris(triphenylphosphine)palladium(I)

115. Which among the following is Ziegler-Natta catalyst?

(A) RMgX
(B) RLi
(C) AlR3 + TiCl4
(D) R2Zn

116. Due to lanthanide contraction following pair(s) may have approximately equal in size

(A) Zr and Hf
(B) Nb and Ta
(C) Mo and W
(D) All of the above

117. A brown coloured ring is formed, when ferrous sulphate is added to a solution
containing nitrate. The colour is due to the formation of

(A) [Fe(H2O)5(NO)2]2+
(B) [Fe(H2O)4(NO)2]2+
(C) [Fe(H2O)5NO]2+
(D) [Fe(H2O)4NO]2+

118. Spin-only magnetic moment of Cu+ ion is

(A) 3.88 BM
(B) 2.83 BM
(C) 1.41 BM
(D) 0 BM

119. Ferric alum gives red color with NH4SCN due to formation of

(A) Al(SCN)3
(B) [Fe(SCN)]2+
(C) Fe(SCN)3
(D) [Fe(SCN)3]−

120. Tetraethyllead in petrol act as

(A) Knocking agent
(B) Reducing agent
(C) Anti knocking agent
(D) Oxidising agent

121. Number of atoms in 20 g Ca is equal to number of atoms in

(A) 20 g Mg
(B) 1.7 g NH3
(C) 1.8 g H2O
(D) 1.6 g CH4

122. Which of the following is an insulator?

(A) Magnesium
(B) Silicon
(C) Diamond
(D) Aluminium

123. What among the following are intracellular and extracellular ions respectively?

(A) Na+, Cl−
(B) Na+, Ca2+
(C) Cl−, K+
(D) K+, Na+

124. Hypophosphorous acid contains

(A) one hydrogen attached to P
(B) two hydrogens attached to P
(C) three hydrogens attached to P
(D) no hydrogen attached to P

125. Which of the following statements are correct?

(A) The hybridization in diamond and graphite is sp3
(B) The hybridization in diamond is sp2, graphite is sp3
(C) The hybridization in diamond is sp3, graphite is sp
(D) The hybridization in diamond is sp3, graphite is sp2

126. Which of the following has zero dipole moment?

(A) CO
(B) SO2
(C) SO3
(D) H2O

127. Temporary hardness of water is due to the presence of

(A) HCO3− of Ca2+, Mg2+ and Na+
(B) SO42− and Cl− of Na+ and K+
(C) SO42− and Cl− of Ca2+ and Mg2+
(D) HCO3− of Ca2+ and Mg2+

128. The type of structure associated with [C2B9H11]2− is

(A) Closo
(B) Arachno
(C) Nido
(D) None of the above

129. Arrange the following element according to electron affinity value.

O, S, Se, Te
(A) O > S > Se > Te
(B) O > Se > S > Te
(C) O > S > Se > Te
(D) S > Se > Te > O

130. Which one of the following molecules will form a linear polymeric structure due to
hydrogen bonding?

(A) NH3
(B) H2O
(C) HCl
(D) HF

131. Which of the following is paramagnetic?
−
(A) NO
+
(B) NO
−
(C) CN
−
(D) O2

2 3
132. In an octahedral structure, the pair of d orbitals involved in d sp hybridization is

(A) d 2 ,d 2
x − y2 z

(B) d xz , d 2
x − y2
(C) d 2 , d xz
z
(D) d xy , d yz

4
133. Crystal field stabilization energy for high spin d octahedral complex is

(A) −1.6∆O+P
(B) −0.6∆O
(C) −1.2 ∆O
(D) −1.8 ∆O

134. Identify the function of hemocyanin and the metal responsible for the function

(A) O2 transport and Fe
(B) O2 transport and Cu
(C) Electron transport and Fe
(D) Electron transport and Cu

135. Which of the following carbonyls will have the strongest C−O bond?
+
(A) [Mn(CO)6]
(B) [Cr(CO)6]
−
(C) [V(CO)6]
(D) [Fe(CO)5]

136. Which of the following oxides will be the least acidic?

(A) As4O6
(B) As4O10
(C) P4O10
(D) P4O6

137. Glass reacts with HF to produce

(A) SiF4
(B) H2SiF6
(C) H2SiO3
(D) Na3AlF6

138. The tendency of BF3, BCl3, and BBr3 to behave as Lewis acid decreases in the
following order:

(A) BCl3 > BF3 > BBr3
(B) BBr3 > BCl3 > BF3
(C) BBr3 > BF3 > BCl3
(D) BF3 > BCl3 > BBr3

139. On doping Ge metal with a little of In or Ga, it forms a/an

(A) p-type semiconductor
(B) n-type semi-conductor
(C) insulator
(D) rectifier

140. The number of geometrical isomers for [Pt(NH3)2Cl2] is

(A) 2
(B) 1
(C) 3
(D) 4

141. In neutron activation analysis the radiation commonly detected is

(A) α- rays
(B) β- rays
(C) γ- rays
(D) X-rays

142. Function of myoglobin is

(A) O2 transport
(B) O2 storage
(C) Electron carriers
(D) Iron storage

143. What is the denticity of acetylacetonato(acac) ligand ?

(A) 3
(B) 6
(C) 2
(D) 1

144. The mineral of iron is

(A) Malachite
(B) Cassiterite
(C) Magnetite
(D) Pyrolusite

145. Triclinic crystal system is defined by

(A) a ≠ b ≠ c, α = β = γ = 90°

(B) a = b = c, α = β = γ= 90°
(C) a = b = c, α ≠ β ≠ γ ≠ 90o
(D) a ≠ b ≠ c, α ≠ β ≠ γ ≠ 90o

146. The metal ions involved in nitrogenase are

(A) Fe and Zn
(B) Mo and Fe
(C) Mn and Mg
(D) Mg and Fe

147. Number of radial nodes for 5d orbitals are

(A) 2
(B) 3
(C) 1
(D) 4

148. The angular nodal surfaces for a 3dxy orbital are

(A) YZ and XZ planes
(B) YZ plane
(C) XZ and XY planes
(D) XY plane

149. Number of angular nodes for d and f orbitals are

(A) 2 and 3
(B) 1 and 2
(C) 0 and 1
(D) None of the above

150. The type of hybridization and shape of the molecule in ClF3 are respectively
3
(A) sp , pyramidal
2
(B) sp ,trigonal planer
3
(C) dsp , trigonal bipyramidal
3
(D) sp d, T- shaped

FINAL ANSWER KEY
Subject Name: CHEMISTRY
SI No. Key SI No. Key SI No. Key SI No. Key SI No. Key
1 D 31 B 61 B 91 D 121 D
2 A 32 A 62 C 92 C 122 C
3 B 33 C 63 B 93 D 123 D
4 C 34 A 64 C 94 D 124 B
5 D 35 B 65 D 95 C 125 D
6 A 36 C 66 C 96 B 126 C
7 C 37 D 67 C 97 C 127 D
8 D 38 B 68 C 98 A 128 C
9 B 39 A 69 A 99 A 129 D
10 D 40 B 70 C 100 C 130 D
11 B 41 B 71 D 101 B 131 D
12 C 42 C 72 C 102 D 132 A
13 D 43 B 73 A 103 B 133 B
14 D 44 A 74 C 104 C 134 B
15 A 45 A 75 B 105 D 135 A
16 A 46 B 76 D 106 C 136 A
17 D 47 D 77 B 107 B 137 B
18 A 48 A 78 C 108 C 138 B
19 C 49 A 79 B 109 D 139 A
20 B 50 C 80 B 110 B 140 A
21 A 51 A 81 A 111 C 141 B
22 D 52 C 82 C 112 B 142 B
23 C 53 B 83 A 113 C 143 C
24 C 54 D 84 B 114 B 144 C
25 D 55 B 85 B 115 C 145 D
26 D 56 D 86 A 116 D 146 B
27 B 57 B 87 C 117 C 147 A
28 B 58 A 88 D 118 D 148 A
29 D 59 C 89 C 119 B 149 A
30 A 60 B 90 A 120 C 150 D