CUSAT CAT 2019 Question Paper Chemistry

1

19
CHEMISTRY (PG)

20
1. The purple colour of MnO4– is due to
S T
E
(A) L to M charge transfer T
N
(B)
O
M to L charge transfer

(C) d-d transition
SI
(D) f-f transitionIS
M
2. D
M
Sulphide ores are generally concentrated by
A

N flotation
(A)
OFroth
M
(B) Roasting
M Magnetic
O
(C) separation

CO
E
(D)Carbon reduction

SA3.T
C T
Which of the following has regular tetrahedral structure?

CU (A)
(B)

AT
SF4
N
[Ni(CN)4]2–

19
S IO
(C) BF4–
(D) XeF4
2 0
4.

U
C IS
(A)
(B)
K+ S
Ca2+ T E
T
The smallest ionic radius among the following is for:
S
(C) Sc3+ N
O
M I
(D) Ti4+
S
IS
D
5. Which of the following is only acidic in nature?
M
A D
(A) Be(OH)2
(B) Mg(OH)2
A
(C) B(OH)3
N
(D)
O
Al(OH)3

6. The metal present in Vitamin B12 is M
M
(A) Mg
C O
(B) Fe
(C) Co
AT
(D) Zn
S
CU

2

7. Ionic radii of K+, Ca2+, Cl–, S2– ions decrease in the order

(A) Cl–>S2–> K+> Ca2+ 019
(B) K+> Ca2+> Cl–>S2– 2
(C) S2–> Cl–> K+> Ca2+
S T
E
(D) Ca2+> K+> Cl–> S2–
T
N
8.
O
Which of the following molecules has three fold axis of symmetry?

SI
(A) NH3 IS
M
M
(B) C2H4
(C) CO2 D
A

(D) SO2
N
9. TheM
O
metallic character of beryllium is due to

SA
O
M
O E
(A) partially filled 2s band
C (B) completely filled 2s band
C T
T (C) overlap of 2s and 2p bands

T
(D) empty 2p band
CU 10.
A N
Which of the following contains P-O-P bond?
19
(A)
(B)
S IO
Hypophosphorous acid
Phosphorous acid 2 0

11.
(C)
(D)
U
C IS S
Pyrophosphoric acid
Orthophosphoric acid

T
Cubic unit cell is defined by
E ST
N
O
M I
(A) a≠b≠c, α=β=γ=90°
S
IS
(B) a=b=c, α=β=γ=90°

D
(C) a=b≠c, α=β=γ=90°, γ=120°
(D) a=b=c, α≠β≠γ
M
12.
A A
D
Which second-row transition can form compounds in which the metal has the +8
N
oxidation state?
O
(A)
(B)
Palladium
Ruthenium M
(C) Molybdenum M
(D) Cadmium
C O
AT
S
CU

3

13. The most important ore of aluminium is

(A) bauxite 019
(B) magnetite 2
(C) haematite
S T
E
(D) monazite
T
14. N
Among the following shortest bond length is found in
O
SI
(A) C2 IS
M
M
(B) N2
(C) O2 D
(D) F2 A

N
O
15.
M
Ziegler-Natta catalyst for polymerization of ethylene consists of TiCl and
3

SA
M
O E
CO (B) triphenyl phosphine
(A) triethylaluminium
T (C) EDTA
C T
T
(D) triethylphosphine
CU 16.
A N
Which one of the following is the weakest Lewis base?
19
(A)
(B)
S IO
CH3–
NH2– 2 0
(C)
(D)
UOH–

C IS
F–
S T E ST
17. What is the bond order of
N ?
O
(A)
M
3

IS
S I
D
(B) 2
(C) 1
M
A
(D) 2.5
D
18. A
P4 O10 is the anhydride of
N
(A) H3PO2 O
(B) H3PO3 M
(C) H3PO4
M
(D) H4P2O7
C O
AT
S
CU

4

19. A positron ion is emitted from 23Na11, the ratio of the atomic mass and atomic number of

19
the resulting nuclide is

(A) 22/10 20
(B) 22/11
S T
E
(C) 23/10
(D) 23/12 T
N
O
Consider a titration of Ipotassium dichromate solution with acidified Mohr’s salt solution
SSas indicator. The number of moles of Mohr’s salt required per mole
20.
using diphenylamine
of dichromate isM
I
(A) 3 A
D
M
(B) 4 N
O
M
(C) 5
M
O
(D) 6

SA T
O
4
2–

E
21. C [Ni(CN) ] is diamagnetic. The hybridization of nickel in this complex is

C T
T
3
(A) sp
CU
N
(B) dsp2

A
(C) d2sp3
19
S IO
(D) dsp3

22. 2 0
The calculated magnetic moment (B. M.) of Eu3+ system will be

(A)
(B)
(C)
U
C IS
0
3.42
7.91
S T E ST
(D) 3.61 N
O
23.
M S I
Dual character of an electron was explained by
IS
(A)
D Bohr
M
A D
(B) Heisenberg
(C) de Broglie
A
(D) Pauli
N
O
24.
M
The IUPAC name for the complex [Co(NO2)(NH3)5]Cl2 is

M chloride
(A) nitrito-N-pentaamminecobalt(III)

CO chloride
(B) nitrito-N-pentaamminecobalt(II)
(C) pentaamminenitrito-N-cobalt(II) chloride

AT
(D) pentaamminenitrito-N-cobalt(III) chloride
S
C U

5

25. Hydrogen bomb is based on the principle of

(A) Nuclear fission 019
(B) Natural radioactivity 2
(C) Nuclear fusion
S T
E
(D) Artificial radioactivity
T
26. N
In oxy-hemoglobin the iron is
O
S I
IS
(A) Low spin, paramagnetic
M
M
(B) High spin, diamagnetic
D diamagnetic
(C) Low spin,
(D) HighAspin, paramagnetic

N
O
27.
M
In which one of the following pairs do the species have similar geometry?

SA
CO
M
(A) CO and SO
T (B) NH and BH O
C T
2

3
E
2

3

CU (C)

AT N
and

19
S IO
(D)
and
2 0
28.

(A)
(B)
U 92
1
S
U235
H3 T E
T
Which isotope is used for dating archeological finding?

C IS
S
(C) 8
O18 N
O
M I
6
(D) C14
S
IS
D
29. Which statements best describe the structure of NaCl?
M
A D
(I) Each sodium ion is surrounded by six chloride ions.
(II)
A
The chloride ions are arranged octahedrally around each sodium ion.
(III
N
The lattice forms cubic structure.
)
O
(A) I and II only M
(B) I and III only M
(C)
(D)
II and III only
All of the above C O
AT
30.
S
Predict the number of unpaired electron and spin only magnetic moments for the
U
following compound [Ru(NH3)6]3+.
C

6

(A) 1 and 1.73μB

19
(B) 2 and 2.8μB
(C) 3 and 3.8μB
(D) 0 and 0.5μB 20
31.
S
Which of the following can function as a hexadentate ligand? T
E
(A) ethylenediamine T
(B) EDTA N
O
(C) CO
SI
(D) C2O42– IS
M
32.
M
D
The set of ions in which the members all have the same electron configuration is
A

N , Fe
OFe
2+ 3+
(A)
M , SeO , TeO
3– 2– –
(B) N ,O ,F
M SO
O
2– 2– 2–
(C)

E
4 4 4

CO
– – –
(D)
F , C , Br

SA T
33.
C T
Which of the following element has the highest first ionization energy?

CU (A)
(B)
As

A
Ge
T N 19
S IO
(C) Ga
(D) Rb
2 0
34.

U
C IS
geometry?

(A)
S
CO2 and N2O only T E
T
Which of the following species: CO2, H2O, BeCl2, and N2O have the same molecular
S
(B) H2O and N2O only N
O
M I
(C) H2O and BeCl2 only
S
IS
(D) CO2, BeCl2, and N2O

35.
D M
Which of the following compounds is expected to have the strongest ionic bond?

A
(A)
(B)
(C)
RbF
NaF
NaI
O
N
A
D
(D) CsBr
M
36. Mthe metal ion –ligand interaction is
In accordance with crystal field theory,

C O
(A) Covalent
(B) Acid-Base
A T
(C) Electrostatic
S
U
(D) None of the above
C

7

019
2
S T
E
T
N
O
SI
IS
M
A
D
M
N
O
M

SAT
CO
M
O
C T E
CU
AT N 19
S IO 2 0
U
C IS S T E ST
N
O
M IS
S I
D M
A O
N
A
D

M
M
C O
AT
S
CU

8

37. CFSE of [Cr (H2O)6]2+

19
(A) –16.0Δo
(B) –0.6 Δo
(C) +0.6 Δo 20
(D) –0.4 Δo
S T
E
38. EAN of [Co(NH3)6]3+ is T
N
O
(A) 38 SI
(B) 34 IS
M
M
(C) 36
(D) 46 D
A

N
39.
O
Water gas is an equimolar mixture of
M
M
O
(A) CO and N

E
2 2

CO (C) CO and H
(B) CO and H O

C T
2

AT (D) CO2 and H2O
2

S
CU 40.
T1

N
Find the missing particle in the following nuclear reaction

A
1
0 n 1 p + ?

19
S IO
(A) γ rays
(B) H– 2 0
U S
(C) –1 e 0

C IS
(D) +1 e 0
T E ST
41. N
The actual shape of XeF6 is
O
(A)
M S
Square pyramidal

IS
I
D
(B) Octahedral
(C) Pentagonal bipyramidal
M
A D
(D) Distorted octahedral

42. A
Coordination number and oxidation state of Cr in K3[Cr (C2O4)3] are respectively
N
(A) O
3 and +3
(B) 3 and 0 M
(C) 6 and +3 M
(D) 6 and +4
C O
AT
S
CU

9

43. Which of the following system has maximum number of unpaired electrons?

(A) d5 (tetrahedral, high spin) 019
(B) d6 (octahedral, high spin) 2
(C) d4 (octahedral, low spin)
S T
E
(D) d7 (octahedral, high spin)
T
44. N
The number of unpaired electrons in tetrahedral [Ni(CO)4] complex is
O
O 20 SI
(A) 2 IS
M
M
(B) 4
(C) 0 D
(D) 3 A

N
O
45.
M
The crystal field splitting energy for octahedral (Δ ) and tetrahedral (Δ ) complexes is
o t

M as
O
related

SA
CO (A) Δ ≈ 4/9 Δ
T (B) Δ ≈ 1/2 Δ
C T
t
t E o
o

T
(C) Δ ≈ 2 Δ
CU
o t

N
(D) Δo ≈ 4/9 Δt

46.
A
S IO
19
Which of the following products is obtained on heating, B2H6 with NH3 in the ratio (1:2)
at higher temperature?
2 0
(A)
(B)
(C)
(D)
U
C IS S
B3N3H3
B2H6 2NH3
Boron nitride
B3N3H6 T E ST
N
O
M I
47. I3– ion is
S
IS
D
(A) Linear
(B) Triangular
M
A D
(C) Bent
(D)
A
Tetrahedral
N
48.
O
Germanium is an example of a/an

(A) intrinsic semiconductor M
(B) n-type semiconductor M
(C) p-type semiconductor
C O
(D) extrinsic semiconductor

AT
S
CU

10

49. Which is called white graphite?

(A) SiO2 019
(B) CaC2 2
(C) BN
S T
E
(D) B2O3
T
50. N
The chemical constituent of clay is
O
SI
IS
(A) Silicon oxide
M
M
(B) Aluminum borosilicate
(C) ZeoliteD
A silicate
(D) Aluminum

N
O
51.
M
Among compounds 1, 2, 3 and 4, which will exhibit optical activity?

SA
T
CO
M
O
C T E
CU (A)
(B)
(C) T
Compounds 1 and 4

A N
Compound 1 only
Compounds 1, 2 and 4
19
S IO 0
(D) All compounds are optically inactive
2
U S T
52. IUPAC name for the compound shown below is:
S
C IS O
N
T E

M IS
S I
D
(A) (S)-3-methylpent-1-en-4-yne
(B) (R)-3-methylpent-1-yn-4-ene
(C) M
(R)-3-methylpent-1-en-4-yne

53. A
(D)

N
A
D
(S)-3-methylpent-1-yn-4-ene

-D-Glucopyranose and β-D-glucopyranose do not constitute a pair of
O
(A) geomertical isomers M
(B) epimers
M
(C)
(D)
enantiomers
diasteromers C O
AT
S
CU

11

54. Which among the following reactions is suitable for isolation of isocynates in pure form?

(A) Beckmann rearrangement 019
(B) Curtius rearrangement 2
(C) Hofmann rearrangement
S T
E
(D) Fries rearrangement
T
55. N
Use Woodward-Fieser rules to predict absorption maximum for the given compound
O
SI
IS
M
A
D
M
N
(A) O302 nm
M 293 nm
O
(B)
M 272 nm
E
(C)
CO
C T
(D) 252 nm

A T
S 56. β-Sheet found in a protein can be considered as an example of

CU (A)
(B)

AT N
Primary structure
Tertiary structure
19
S IO 0
(C) Quaternary structure
(D) Secondary structure
2
57.
U
C IS
(A) S
Terminal Acetylene T E ST
A strong peak at 1700 cm-1 in IR spectrum indicates the presence of the functional group

(B) Nitro Group
N
O
M
(C) Carbonyl
(D) Nitrile ( )
S I
IS
58.

D
Quinoline on oxidation with alkaline KMnO4 followed by acidification gives
M
A
(A)

O
N
A
D

M
(B) M
C O
AT
(C)
S
CU

12

(D)
019
2
59. S T
2-Ethylpyridine reacts with N-bromosuccinimide to give a brominated product. Structure
E
of the brominated product is
T
N
O
(A) SI
IS
M
A
D
M
(B) N
O
M

SAT
M
CO (C) O
C T E
CU (D)

AT N 19
S IO 2 0
U S
60. Oxidation of aniline with MnO2 and H2SO4 gives

ST
C IS E
(A) Phenylhydroxylamine
(B) Nitrobenzene
T
(C) p-Benzoquinone
N
O
M
(D) Phenol

S I
IS
61. The reaction of pyridine with sodamide in liquid ammonia to yield 2-aminopyridine is

(A)
D M
a nucleophilic substitution reaction on pyridine

A
(B)
(C)
(D)
D
an electrophilic substitution reaction on pyridine
A
a free radical substitution reaction on pyridine
N
pericyclic reaction
O
62.
M
Longifolene (C15H24) is categorized as a:
M
C O
A T
S
C U
(A) polycyclic flavonoid

13

(B) diterpene

19
(C) tripterpene
(D) sesquiterpene
20
S T
E
T
N
O
SI
IS
M
A
D
M
N
O
M

SAT
CO
M
O
C T E
CU
AT N 19
S IO 2 0
U
C IS S T E ST
N
O
M IS
S I
D M
A O
N
A
D

M
M
C O
AT
S
CU

14

63. The order of basicity among pyrrole, pyridine and piperidine is

(A) Pyridine > Piperidine > Pyrrole 019
(B) Pyrrole > Piperidine > Pyridine 2
(C)
S T
Piperidine > Pyrrole > Pyridine
E
(D) Piperidine > Pyridine > Pyrrole
T
64. N
The name of the rearrangement given below is
O
SI
IS
M
D
M
(A) FriesArearrangement

N rearrangement
(B) Claisen
O
(C) Favorskii rearrangement
M Wagner-Meerwein rearrangement
O
(D)
M

S
65.
AT E
COWhich among the following is used as a free radical initiator?
C T
T
(A) Benzoyl peroxide
CU (B) KI
(C)
(D)
A
CH3I

N
Nitrobenzene
19
66.
S IO 2 0
The following photochemical transformation proceeds through

U
C IS S T E ST
(A) N
Norrish type I reaction
O
M I
(B) -hydrogen abstraction
(C) Barton reactionS
IS
D
(D) Paterno-Buchi reaction
M
A D
67. The ligand system present in vitamin B12 is
A
(A)
N
Porphyrin
(B)
O
Crown ether
(C)
(D)
Corrin
Heme M
M
C O
AT
S
CU

15

68. A vitamin which exists as an ene-diol is

(A) Vitamin A 019
(B) Vitamin B2 2
(C) Vitamin C
S T
E
(D) Vitamin K
T
69. N
Which among the following reactions will give the same product from the following
O
aldohexoses?
SI
IS
M
A
D
M
N
O
M

SAT
CO
M

(A)
O
C T E
Oxidation with HNO3

CU
(B)
(C)
(D) T
Oxidation with HOBr

A N
Wohl degradation
Ruff degradation
19
70.
S IO 2 0
Rapid interconversion of α-D-glucose and β-D-glucose in solution is known as

(A)
U
C IS
(B)
(C) S
Mutarotation
Racemisation
Asymmetric inductionT E ST
(D)
N
Fluxional isomerisation
O
71.
M S I
In the structure elucidation of alkaloids the number of methoxyl group present is

IS
D
estimated by

M
A
(A) Kuhn-Roth method
(B) D
Hofmann method
(C) A
Herzig-Meyer method
(D) N
Zeisel method
O
M
72.
M
Aromatic electrophilic substitution on pyridine is preferentially at position/positions

(A) 2 and 4
C O
(B)
(C)
3
4 AT
(D) 2 S
CU

16

73. Friedlander Quinoline synthesis involves reaction between the following reagents

(A) Aniline and glycerol 019
(B) 2
o-aminobenzaldehyde and α-methylene carbonyl compound
(C)
S
acetoacetic ester and aniline T
E
(D) anthranilic acid and acetophenone
T
74. N
The following are the four heteroaromatic bases present in DNA. Which base pair can
O
SI
form three hydrogen bonds?
IS
M
A
D
M
N
O
M

SAT
M
CO (B) A-T
(A) A-C

(C) G-C
O
C T E
T
(D) G-T
CU 75.
A N
Which is the main acid-catalyzed rearrangement product of the following 1, 2-diol?

19
S IO 2 0
U
C IS
(A)
S T E ST
N
O
M IS
S I
D
(B)
M
A
(C)
O
N
A
D

M
M
(D)
C O
AT
S
CU

17

76. Which of the following molecules does not have a dipole moment?

(A) CH3Cl 019
(B) CH2Cl2 2
(C) CHCl3
S T
E
(D) CCl4
T
77. N
In the most stable conformer of but-1-yn-1-ylcyclohexane a maximum of how many
O
O 20 SI
carbon atoms will remain collinear?
IS
M
A
D
M
N
O
M3
O
(A)
M
E
(B) 5
CO (C)
C T
2

A T (D) 4
S 78.
CU
T
Which among the following is least reactive towards an electrophile?

A N 19
S IO
(A)

2 0
(B)
U
C IS S T E ST
N
(C)
O
M IS
S I
(D)
D M
79. A N
A
D
Which list below gives NMR active nuclei only?
O
M
1
(A) H, 13C, 19F
1
H, 2H, 12C
(B)
M
O
2
(C) H, 12C, 19F

C
3
(D) H, 14C, 31P

80.
AT
In which of the following are the π-electrons not delocalized?
S ketone
U
(A) An α,β-unsaturated
C

18

(B) Buta-1,3-diene

19
(C) Hepta-1,6-diene

81.
(D) Allyl anion
20
Which molecule best corresponds to IR spectrum below with molecular formula C6H14O
S T
E
T
N
O
SI
IS
M
A
D
M
N
O
M

SAT
M
CO (A) O
C T E
CU (B)

AT N 19
S IO 0
(C)
2
U S T
(D)
S
82.
C IS T E
The product formed in Aldol condensation is

O
N
M I
(A) a β-hydroxy aldehyde or a -hydroxy ketone
(B)
S
an -hydroxy aldehyde or ketone

IS
D
(C) an , -unsaturated ester
(D) a -hydroxy acid
M
83.
A
(A)
(B) O
N
A
D
In which of the following reactions new carbon-carbon bond is not formed?

Cannizzaro reaction
Wurtz reaction
(C) Reimer-Tiemann reaction M
(D) Friedel-Crafts reaction M
84. Which among the following hasC
O
the most acidic hydrogen?

A T
(B) 2,4-HexanedioneS
(A) 3-Hexanone

CU
(C) 2,5-Hexanedione

19

(D) 2,3-Hexanedione

019
2
S T
E
T
N
O
SI
IS
M
A
D
M
N
O
M

SAT
CO
M
O
C T E
CU
AT N 19
S IO 2 0
U
C IS S T E ST
N
O
M IS
S I
D M
A O
N
A
D

M
M
C O
AT
S
CU

20

85. Acyl chlorides are made by reacting carboxylic acids with

(A) AlCl3 019
(B) HCl 2
(C) Cl2
S T
E
(D) PCl5
T
86. N
What is the correct order of reactivity (most reactive first) of pyrrole, furan and thiophene
O
S I
towards electrophilic substitution?
IS > thiophene
M
M
(A) furan > pyrrole
D > pyrrole > furan
(B) thiophene
(C) furanA> thiophene > pyrrole

N
O > furan > thiophene
(D) pyrrole
M can be stereoselectively reduced to give either the cis or trans isomer of
M
O
87. But-2-yne

CObut-2-ene?
E
but-2-ene. Which among the following statements is true for the reduction of but-2-yne to

SA T
C T
T
(A) Catalytic hydrogenation in the presence of Lindlar’s catalyst gives the trans isomer
CU
N
while reduction with one equivalent of lithium in liquid ammonia yields the cis

A
isomer

19
S IO
(B) Catalytic hydrogenation in the presence of Lindlar’s catalyst gives the cis isomer

isomer 2 0
while reduction with one equivalent of lithium in liquid ammonia yields the trans

U S T
(C) Reduction with one equivalent of lithium in liquid ammonia gives the cis isomer
S
while reduction with excess sodium in liquid ammonia gives the trans isomer

C IS O
N
T E
(D) Catalytic hydrogenation over palladium catalyst gives the trans isomer while
catalytic hydrogenation over finely divided platinum yields the trans isomer.

M I
88. Paraldehyde is the trimer of
S
IS
D
(A) Methanal
(B) Glyoxal
M
A D
(C) Benzaldehyde
(D) Ethanal
A
N
O
M
M
C O
AT
S
CU

21

89. In Hunsdiecker reaction, silver salts of carboxylic acids react with a halogen to produce

19
an organic halide. Since the reaction is successful on bridgehead positions as well, the
0
most significant intermediate involved in this reaction is:
2
S T
E
T
N
O
(A)
(B)
carbocation
carbene SI
(C) IS
carbon centered free radical
M
M
(D) carbanion
D
A

90. Pick the N
statement that is not true for SN2 reactions
O
M SN2 reaction rates are unaffected by the nature of solvents
(A)

SA
O
M
O
C T E
(B) SN2 reactions proceed with inversion of configuration at the reacting center.
C (C) SN2 reaction rates are controlled by the nature of both leaving groups and
T (D) Presence of electron withdrawing groups on the reacting center accelerates SN2
nucleophiles

CU
T
reaction rates

91.

A N 9
The following base-catalyzed cyclization reaction is an example for
1
S IO 2 0
U
C IS S T E ST
N
O
(A)
(B)
M IS
S I
aldol condensation
Dieckmann condensation
(C)
(D)
D Nazarov cyclization
M
Michael addition

92.
A A
D
Pick the reagent suitable for effecting the following ring expansion reaction:

O
N
M
(A) concentrated nitric acid O
M
C(CF CO H)
(B) peroxytrifluoroacetic acid
(C) periodic acid(HIO ) T
3 3

(D) osmium tetroxide A
4

S
C U

22

93. Pick the statement that is not true for Diels-Alder reactions

019
(A) It is a suitable method for the preparation of six-membered rings having one or
two double bonds 2
(B) It is stereospecific in nature
S T
E
(C) It is a concerted 4+2 cycloaddition reaction
T
(D) Diels Alder reactions are equally feasible under thermal and photochemical
conditions N
O
S I
94.
IS
Which among the following reactions proceeds through an intermediate?
M
D
M
(A) SN2 substitutions
A
(B) E2 eliminations

N
(C) Ring opening of cyclobutene to give 1,3-butadiene under thermal conditions
(D) O
M Rearrangement of phenyl acetate to give 4-hydroxyacetophenone
95. OWhich

SA
T
C benzaldehyde?O
M among the following reactions is not a suitable method for the preparation of

C T E
T
(A) Oxidation of benzyl alcohol using PCC
CU (B) Rosenmund reduction of benzoyl chloride

A N
(C) Reaction of phenylmagnesium bromide with carbon monoxide
9
(D) Ozonolysis of styrene (vinylbebzene)
1
S IO 2 0
U S T
96. The following reaction is an example for
S
C IS O
N
T E

M IS
S I
D
(A) Claisen condensation
(B)
M
Knoevenagel reaction

A D
(C) Stobbe condensation
(D)
A
Mannich reaction

N
97.
O
Which among the following reactions is not suitable for the preparation of cyclohexane-
1,2-diol?

(A) Oxidation of cyclohexene withM
M
osmium tetroxide
O
(B) Treatment of cyclohexene oxide with aqueous NaOH
C oxide with Lewis acid such as boron trifluoride in
(C) Treatment of cyclohexene
nonaqueous media T

SA with magnesium metal
(D) Treatment of adipaldehyde

CU

23

98. The following ring contraction reaction is achieved by

019
2
S T
E
(A) a base such as hydroxide ion
(B) Lewis acids T
(C) N
triphenylphosphine
O
(D) periodic acid
SI
99. IS
A ring opening polymerization is involved in the preparation of
M
A
D
(A) nylon-6,6
M
N
(B) nylon-6
O
(C) polyurethane
M polyurea
O
(D)
M

SA T
O

C T E
100.C Which among the following will not give a positive test with Ninhydrin?

CU
T
(A

N
)

(B)
A
S IO 2 0 19

U
(C)

(D
)
C IS S N
T E ST

O
M IS
S I
D
101. A solution whose pKa is greater than pKb is _____________ in nature
M
A D
(A) acidic
(B) neutral
A
(C) alkaline
N
(D)
O
None of the above

M
M
C O
AT
S
CU

24

102. The coagulation of 100 mL of a colloidal solution of gold number is completely

19
prevented by the addition of 0.25 g of starch to it before adding 1 mL of 10% NaCl
0
solution. Calculate the gold number of starch.
2
(A) 50
S T
E
(B) 250
(C) 25 T
(D) 500 N
O
SI
S
103. The coefficient of Iviscosity is expressed in units of
M
D cm
M
–2
(A) dynes sec
Acm –2

(B) dynes
N
O
–3
(C) dynes sec cm
M dynes sec cm
–1 –20
(D)

SA
T
M
O E
104. OA first order reaction has a rate constant of 0.0051 min . If we begin with 0.10 M
-1

C concentration of the reactant, what concentration of reactant will remain in the solution
after 3 hours?
C T
CU (A)
(B)

AT
.05 M
0.04 M
N 19
S IO
(C) 0.03 M
(D) 0.003 M
2 0
105.
U
C IS S ST
The internal energy of an ideal gas is ………. the volume at constant temperature.

(A) independent of T E
(B) proportional to N
O
M I
(C) inversely proportional to
(D)
S
proportional to the square root of
IS
106.
D M
In a reversible adiabatic expansion of a real gaseous system the temperature of the system

(A)
(B)
(C)
(D)
A increases
decreases

O
N
A
D
remains the same
tends to 0K
M
M
C O
AT
S
CU

25

107. The slope of the graph of log (a-x) versus time for the first order rate equation is

2.303 019
(A)
k 2
S T
E
(B) k
T
(C) –k N
O
SI
IS
–k
(D)
2.303
M
108. The rate ofA
D
M
a gaseous reaction becomes half when volume of the vessel is doubled. What

N of the reaction?
is the order
O
M
O
(A) 0
M
O
E
(B) 1
C (C) 2
SA T (D) 0.5
C T
CU 109.
(A)
AT
A perfectly ideal gas

N 9
can be liquefied only below inversion temperature
1
S IO 0
(B) can be easily liquefied
(C) 2
can be liquefied at low temperature

U S T
(D) cannot be liquefied
S
C IS E
110. If v=300b, the reduced volume is
T
(A) 3 N
O
M I
(B) 100
(C) 10
S
IS
D
(D) 1/100

M
A D
111. At 700 K the equilibrium constant Kp for the reaction 2SO3(g) == 2SO2(g) + O2(g) is

A
1.8 × 10-3 kPa. What is the numerical value in moles per dm 3 of Kc for the reaction at the
same temperature?
N
(A) O
3.09 × 10–4 mol cm–3
(B) 3.09 × 10–4 mol m–3 M
(C) 3.09 × 104 mol m–3 M
(D) 3.09 × 10–7 mol m–3
C O
AT
S
CU

26

112. Half-life of a second order reaction is given by

(A) 1/ka 019
(B) 0.693/ka 2
(C) 2.303 /ka
S T
E
(D) ka/2.303
T
N
O
SI
IS with rate
113. The order of a reaction is
M
(A) 2
A
D
M
(B) 3/2
(C) O 1
N
(D)M 1/2

SA
T
M
O
C T
(A) Arrhenius base E
114. OIn the reaction NH + H O  NH +OH , NH is considered as
C 3 2 4
+ –
3

CU
T
(B) Lowry Bronsted base

N
(C) Lewis base

115. A
(D) Conjugate base

S IO 2 0 19
Radioactive disintegration of the substance is an example of a ……… order reaction

(A)
U
C IS
(B)
(C)
0
1
2 S T E ST
(D) fractional
N
O
116.

M I
The addition of ………. to a colloidal solution causes flocculation

IS
S
(A)
(B)
D an acid
M
a surfactant

A D
(C) an electrolyte
(D) an alkaliA
N
117. O
Which among the following is an example for hydrophilic sols
M
(A) gum
M
(B)
(C)
starch
starch and gum
C O
(D) None of the above
AT
S
CU

27

118. The H+ ion concentration of a weak monobasic acid of concentration ‘C’ is given by

(A) KaC1/2 019
2
(B) C
S T
E
(C) T
N
O
(D) SI
IS
M
119. D
M
The ionic product of water at 50°C is 4×10–14. The concentration of H+ ion is
A

N moles /litre
O2×10
7
(A)
M moles /litre
(B) –7
2×10 moles /litre
M 10
O
–7
(C)

CO
E
+7
(D)
10 moles /litre

SA T
120.
C T
The expression for pH of acetic acid - sodium acetate buffer solution is

CU (A)

AT N
pH= p k a + log 10
[ sodium acetate ]
9
[ acetic acid ]
1
S IO
pH= p k a + log 10
(B)
2 0
U
(C) pH=¿

C IS
(D)
S
pH = p k a + n log 10

N
T E ST
[ sodium acetate ]
[ acetic acid ]

121.
O
Precipitation occurs only when the product of ionic concentrations

(A)
M IS
S I
exceeds the solubility product

D
(B) is lesser than solubility product
(C) M
is equal to the solubility product

A D
(D) is lesser than viscosity of the solution
A
122.
N
Movement of colloidal particles under the influence of electric field is called
O
(A) Electrophoresis
M
(B) Brownian movement
M
(C)
(D)
Flocculation
Tyndal effect
C O
123.
A T
Schulz Hardy rule is concerned with
S in colloids
U
(A) Brownian movement
C

28

(B) Coagulation of sols by electrolytes

19
(C) Protecting power of hydrophilic sols
(D) Cohesive forces
20
124.
S T
The expression for the average velocity is given by
E
T
√ SION
(A) Ĉ=
3 RT

M

IS RT
√ADM
M
(B) Ĉ=
πM

N 2 kT
O √
(C) Ĉ=
M
M

T
CO
SA125.
M
√
(D) Ĉ=
O
8 kT

C T
πm
E
T
For an isothermal process of an ideal gas ΔH is
CU
A N
(A) less than zero

19
S IO 0
(B) greater than zero
2
U S
(C) zero
ST
C IS E
(D)
T
N
O
In a consecutive reaction of the type A →
k1 B k 2 C

M
126. if k2>> k1, the formation of C takes

S I
place without time lag. This statement
→

IS
(A)
D is true
M
A D
(B) can’t be predicted
(C)
(D)
is false
A
is true below room temperature only
N
O
127.
M
The efficiency of heat engines is given by

M
(A) E=
T 2− T1
T1 C O
(B) E=
T 2− T1
AT
T2
S
CU

29

T2
(C) E=
T 2− T1
019
(D) E=
T 1− T2
2
T2
S T
E
T
N
O
SI
IS
M
A
D
M
N
O
M

SAT
CO
M
O
C T E
CU
AT N 19
S IO 2 0
U
C IS S T E ST
N
O
M IS
S I
D M
A O
N
A
D

M
M
C O
AT
S
CU

30

128. Two gases have molecular masses 64 and 100 respectively. The diffusion rate for the

19
former is 15 mLs–1. What is the diffusion rate for the other?

(A) 12 L s–1 20
(B) 1.2 mL s–1
S T
E
(C) 12 μL s–1
(D) 12 mL s–1 T
N
O
129. According to kinetic S I of gases, for a diatomic molecule
theory
ISexerted by the gas is proportional to the mean velocity of the
M
M
(A) the pressure
D
molecule
A

(B) the pressure exerted by the gas is proportional to the root mean velocity of the
N
Omolecule
(C)M the root mean square velocity of the molecule is inversely proportional to the
M
O
temperature

CO temperature
E
(D) the mean translation kinetic energy of the molecule is proportional to the absolute

A T
C T
S 130. The value α (degree of dissociation) for 0.05 N acetic acid is 0.03. Calculate the
CU
T N
dissociation constant for acetic acid

A 19
S IO
(A) 1.55 × 10–3
(B) 9.28 × 10–4
4.64 × 10–5 2 0
U
(C)

S T
(D) 5.73 × 10–2
S
131.
C IS T E
Calculate the solubility product of compound AB 2 (molar mass = 400) if at 25 oC it
requires 0.08 g of A to form its 1 litre saturated solution

O
N
M I
(A) 8.0 × 10–4
S
IS
(B) 2.05 × 10–3

D
(C) 2.05 × 10–12
(D) 3.2 ×10–11 M
132.
A N
A
D
Calculate the degree of hydrolysis of 0.1 N KCN solution at 25 oC. (The dissociation
constant of HCN is 5.0 × 10–5 and ionic product of water is 1.0 × 10–14)
O
(A) 2.0 × 10–9
M
(B) 0.2 × 109
M
O
–5
(C) 3.16 ×10
(D) 3.16 × 10–3
C
AT
S
CU

31

133. When [N2O5] = 0.22 M the rate of decomposition of N2O5 is 1.1 × 10–4 mol L–1 s–1. What

19
is the value of k for this first order reaction?

(A) 1.1 × 10–3 s–1 20
(B) 5 × 10–4 min
S T
E
(C) 5×10–4 s–1
(D) 5 × 10-3 s–1 T
N
O
S I 2A + B  3C the rate of appearance of C at time ‘t’ is
134. For an elementary reaction
1.3×10 mol L s I.SCalculate the rate of disappearance of A at this time
–4 –1 –1

M
(A) 8.67 × D
M–5
10 mol L s
(B) 2.6 ×A10 mol L s
–1 –1

–5 –1 –1

(C) O N× 10 mol L s
3.9 –5 –1 –1

(D)M 6.5 × 10 mol L s
–5 –1 –1

T
M
O
10 –1

E
135. OIn the Arrhenius equation for a certain reaction, the value of A and E (activation energy)
C are 4.0 × 10 s and 80 kJ mol respectively. If the reaction is of first order, calculate the
C T
–1

SA temperature at which the rate constant becomes 1.2 × 10 s .
-3 -1
a

CU (A)
(B)

AT N
256.21 K
269.16 K
19
S IO
(C) 2.69oC
(D) 276.56 K
2 0
136.
U
C IS S
Eocell = 1.50 at 25oC
T E ST
In the cell Zn/Zn2+ (0.01 M) // Ag+ (1.0 M)/ Ag. Calculate EMF of the cell at 25oC if

N
(A) 1.259
O
M I
(B) 2.559
S
IS
(C) 1.559

D
(D) 0.155
M
A D
137. Smoke is an example of
A
(A)
N
gas dispersed in solid
(B)
O
gas dispersed in liquid
(C) liquid dispersed in solid
M
(D) solid dispersed in gas
M
C O
AT
S
CU

32

138. 8.5 J heat flow out into the surroundings when a sample of a gas contracts 400 mL by an

19
average pressure of 0.5 atm. Calculate the work done

(A) 2.02 kJ 20
(B) 20.26 kJ
S T
E
(C) 20.26 J
(D) 2.02 kJ mol-1 T
N
O
139. Calculate the standard Iheat of formation of carbon disulphide . Given that the standard
S (s) (s)
(l)
heat of combustionISof carbon , sulphur and carbon disulphide are –333.3, 222.2 and
(l)
–111.1 kJ mol M

M
–1
respectively.
D
AkJ mol –1

(A) 404.4
N kJ mol
O
–1
(B) 244.4
(C)M 4.04 kJ mol –1

M
O
(D) –444.4 kJ mol –1

SA
T
O
o
E
140.C The value of standard state free energy for the reaction CO + H O  CO + H

C T (g) 2 (g) at
25 C is 6.66 kcal. Calculate the value of equilibrium constant k (R=1.987 cal deg mole
p
2 2(g)
–1 –

T
1

CU
)

(A)

A
13 × 10–5
N 19
S IO
(B) 1.3 × 10–5
(C) 1.3 × 10–7
2 0
U
(D) 0.3 × 10–7

141.

C IS S E ST
Enthalpy change (ΔHvap) for the transition of liquid water to steam at 100 oC is
T
74.6 kJ mol–1. Calculate the entropy change for this purpose

N
(A) 20 J mol–1 K–1
O
(B)
(C)
M
0.5 kJ mol–1 K–1
200 J mol–1 K–1
IS
S I
(D)

D
2.0 J mol–1 K–1
M
A D
142. For an adiabatic process which of the following is correct
A
(A) q=0
N
(B) q = +w O
(C) ΔE = q
M
(D) ΔH = 0
M
C O
AT
S
CU

33

143. For rhombohedral crystal system

(A) a = b = c , all angles = 90o 019
(B) 2
a=b=c , all angles are equal but not equal to 90o
(C)
S T
a ≠ b ≠ c , all angles are different and not equal to 90o
E
(D) a ≠ b ≠ c , all angles = 90o
T
144. N
A compound formed by elements A and B crystallises in the cubic arrangement in which
O
SI
A atoms are at the corners of a cube and B atoms are at the face centres. What is the
IS
formula of the compound?
M
(A)
(B)
A3B
AB A
D
M
N
(C)
O
AB3
M
(D) A2B3

SA
T
M
O E
145. OAluminium crystallizes in an fcc structure. Atomic radius of the metal is 125 pm.
C Calculate the edge length of the unit cell of the metal?
C T
T
(A) 353.3 nm
CU
N
(B) 4.28 pm

A
(C) 2.828 nm
19
S IO
(D) 3.147 nm

146. 2 0
The radius of Na+ ion is 95 pm and that of Cl- ion is 181 pm. Predict the coordination

(A)
(B)
U 4
8
S
number of Na+ ion

C IS T E ST
(C) 6 N
O
M I
(D) 12
S
IS
D
147. An element having bcc geometry has atomic mass 50 u. Calculate the density of the unit
M
cell, if its edge length is 290 pm

A
(A)
(B)
(C)
O
N
A
D
5.75 g cm–3
6.81 × 10–13 kg m–3
6810 kg m–3
(D) 6.81 g cm–3
M
M defects on the density of the crystal?
148. What is the effect of presence of Schottky
O
(A) The substance may start C melting even at room temperature
(B) The number of cations
A Tand anions become equal
(C) The number of anions
S decreases

CU
(D) The overall density of a crystalline substance decreases due to Schottky defects

34

149. Close packing is maximum in the crystal, which is

(A) fcc 019
(B) simple cubic 2
(C) bcc
S T
E
(D) monoelinic
T
150. N
The equivalent conductivity of NH4Cl at infinite dilution is 120 ohm –1 cm2 equiv–1 and
O
SI
ionic conductance at OH– and Cl– ions are 180 and 60 ohm–1 cm2 equiv–1 respectively at
IS
25oC. Calculate the equivalent conductivity of NH4OH at infinite dilution
M
(A) D
M
220 ohm–1 cm2 equiv–1
A

(B) 235 ohm–1 cm–2 equiv–1
N
(C)
O
440 ohm cm2 equiv–1
M
(D) 240 ohm–1 cm2 equiv–1

SAT
CO
M
O
C T E ***

CU
AT N 19
S IO 2 0
U
C IS S T E ST
N
O
M IS
S I
D M
A O
N
A
D

M
M
C O
AT
S
CU

CHEMISTRY9 PG - ANSWER KEY
1
20 CODE: 604
TEST
QN. NO. KEY QN. NO. KEY QN. NO. T KEY QN. NO. KEY QN. NO. KEY
E S

1 A 26 C 51 T A 76 D 101 C
2 A 27 D N
O52 C 77 D 102 C

I
3 C 28 D
ISS 53 C 78 B 103 A
4 D 29 D M 54 B 79 A 104 B
5 C 30 A AD 55
M B 80 C 105 A

6 C 31 N
OBB 56 D 81 C 106 B
7 C 32 M 57 C 82 A 107 D
8
9
10
A
C
C
33
34 T C
SA
35
O
M A
D
B
O
C TE
59
60
58
C
C
A
84
85
83
B
D
A 108
109
110
B
D
B
11
12
B
B
U
C 36
37
C
B
AT N
61
62
A
D
86
87
D
B
19
111
112
B
A
13 A 38 C
S I O63 D 88
2 0D 113 C

U S
14 B 39 C 64 B 89 C 114 B
15 A 40 C 65 A 90ST A 115 B
16
17
D
A
41
42 C IS
D
C
66
67
B
C
O
N
T E
91
92
D
B
116
117
C
C
18 C 43 A
M 68
IS
C
S I 93 D 118 A

D
19 C 44 C 69 A 94 D 119 B
20 D 45 A 70 M A 95 C 120 A
21
22
23
B
A
C
46
47
48
A D
A
A
71
72
O
73
N
A
D D
B
B
96
97
98
D
C
A
121
122
123
A
A
B
M
24 D 49 C 74
MC 99 B 124 D

CO
25 C 50 D 75 A 100 B 125 C

AT
S
CU

019
2
QN. NO. KEY
S T
TE
126 A
127 B N
O
128 D SI
129 D IS
M
130 C A
D
M
131 D N
O
132 C M
133
134
135
C
A
B SA
T
CO
M
O
C TE
136
137
C
D
CU
AT N 19
138 C
S I O 2 0
U S
139 D
140 B ST
141
142
C
A C IS O
N
T E
143 B
M IS
S I
D
144 C
145 A M
146
147
148
C
D
D
A O
N
A
D

M
149 A
M
CO
150 D

AT
S
CU