NEET-Chemistry NEET Notes | EduRev

NEET : NEET-Chemistry NEET Notes | EduRev

 Page 1


ROUGH
46. Which of the following does not have spherical as well as angular node ?
1) 1s 2) 2p 3) 3d 4) 5f
47. Equal masses of H
2
and He gases mixed in vessel recorded a pressure of 7.5 atm. The
partial pressure of H
2
 is
1) 4.8 atm 2) 2.4 atm 3) 5 atm 4) 7.5 atm
48. pH of a solution is changed from 2 to 5. What has been done to the solution ?
1) 3 times dilution 2) 3 times concentration
3) 100 times concentration 4) 1000 times dilution
49. The enthalpy of vaporization of benzene is 30.8 kJ mol
-1
 at its boiling point (80.1
0
C).
Calculate the entropy change in the condensation process.
1) +87.3 JK
-1
 mol
-1
2) -87.3 JK
-1
 mol
-1
3) 240 JK
-1
 mol
-1
4)  -240 JK
-1
 mol
-1
50. 2-3% gypsum is added to sample for
1) increasing hardness 2) decreasing setting time
3) increasing setting time 4) making is soft
51. AlCl
3
 and FeCl
3
 can be separated from their mixture by using
1) NH
4
OH 2) NaOH 3) H
2
O 4) magnetic method
52. Which of the following are correct w.r.t D
2
O?
1) It can be used as moderator 2) Its m.p. is 3.82
0
C
3) Its b.p. is 101.42
0
C                                        4) All of these
53. 0.5 molal aqueous solutions of each of NaCl, BaCl
2
 and AlCl
3
 have boiling points T
1
, T
2
and T
3
 respectively. Which of the following is correct ?
1) T
1
 > T
2
 > T
3
2) T
3
 > T
2
 > T
1
3) T
2
 > T
1
 > T
3
4) T
1
 > T
3
 > T
2
54. i) ? ? P Q A fast ? ?
ii) ? ? A R B slow ? ?
iii) ? ? B Q S T fast ? ? ?
are the elementary steps of the reactions,
2P Q 2R S T ? ? ? ?
The rate law of the reaction is:
1) r =  k [P] [Q] 2) r = k [P]
2
 [Q] [R]
3
3) 
? ? ? ? ? ?
1/2 1/3
r k P Q R ? 4) 
? ? ? ? ? ?
r k P Q R ?
55. NH
3
 gives brown precipitate with Nessler’s reagent. The formula of brown compound is :
1) K
2
HgI
4
2) 
2
H N Hg O Hg I ? ? ? ?
3) 
3 2 2
Ca P CaC ? 4) ? ?
4 4
2
NH MoO
CHEMISTRY
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Page 2


ROUGH
46. Which of the following does not have spherical as well as angular node ?
1) 1s 2) 2p 3) 3d 4) 5f
47. Equal masses of H
2
and He gases mixed in vessel recorded a pressure of 7.5 atm. The
partial pressure of H
2
 is
1) 4.8 atm 2) 2.4 atm 3) 5 atm 4) 7.5 atm
48. pH of a solution is changed from 2 to 5. What has been done to the solution ?
1) 3 times dilution 2) 3 times concentration
3) 100 times concentration 4) 1000 times dilution
49. The enthalpy of vaporization of benzene is 30.8 kJ mol
-1
 at its boiling point (80.1
0
C).
Calculate the entropy change in the condensation process.
1) +87.3 JK
-1
 mol
-1
2) -87.3 JK
-1
 mol
-1
3) 240 JK
-1
 mol
-1
4)  -240 JK
-1
 mol
-1
50. 2-3% gypsum is added to sample for
1) increasing hardness 2) decreasing setting time
3) increasing setting time 4) making is soft
51. AlCl
3
 and FeCl
3
 can be separated from their mixture by using
1) NH
4
OH 2) NaOH 3) H
2
O 4) magnetic method
52. Which of the following are correct w.r.t D
2
O?
1) It can be used as moderator 2) Its m.p. is 3.82
0
C
3) Its b.p. is 101.42
0
C                                        4) All of these
53. 0.5 molal aqueous solutions of each of NaCl, BaCl
2
 and AlCl
3
 have boiling points T
1
, T
2
and T
3
 respectively. Which of the following is correct ?
1) T
1
 > T
2
 > T
3
2) T
3
 > T
2
 > T
1
3) T
2
 > T
1
 > T
3
4) T
1
 > T
3
 > T
2
54. i) ? ? P Q A fast ? ?
ii) ? ? A R B slow ? ?
iii) ? ? B Q S T fast ? ? ?
are the elementary steps of the reactions,
2P Q 2R S T ? ? ? ?
The rate law of the reaction is:
1) r =  k [P] [Q] 2) r = k [P]
2
 [Q] [R]
3
3) 
? ? ? ? ? ?
1/2 1/3
r k P Q R ? 4) 
? ? ? ? ? ?
r k P Q R ?
55. NH
3
 gives brown precipitate with Nessler’s reagent. The formula of brown compound is :
1) K
2
HgI
4
2) 
2
H N Hg O Hg I ? ? ? ?
3) 
3 2 2
Ca P CaC ? 4) ? ?
4 4
2
NH MoO
CHEMISTRY
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ROUGH
56. In which of the following molecules/ions are all the bonds not equal ?
1) XeF
4
2) 
4
BF
?
3) SF
4
4) SiF
4
57. If 
0
P ? ? , the d
4
 is represented as
1 ) 
211 0
2g g
t e 2)
111 1
2g g
t e 3) 
0 22
2g g
t e 4) 
1 21
2g g
t e
58. CuSO
4
. H
2
O is blue in colour but anhydrous CuSO
4
 is white though in both copper
exists as Cu
2+
 ion with one unpaired electron the reason is :
1) CuSO
4
 (anhydrous) absorbs white light 2) CuSO
4
 . 5H
2
O absorbs blue light
3) Splitting of d-sub shell occurs in CuSO
4
 (anhydrous) and absorption of orange red light
takes place
4) Splitting of d-sub shell occurs in CuSO
4
.5H
2
O and absorption of orange-red light takes place
59. Which one of the following elements, when present as an impurity in silicon makes it a
p-type semiconductor?
1) 
As
2) 
P
3) 
In
4) 
Sb
60. Buna-N synthetic rubber is a copolymer of
1) 
2 2
CH CH CH CH ? ? ? and 
6 5 2
C H CH CH ?
2) 
2
CH CH CN ? ? and 
2 2
CH CH CH CH ? ? ?
3) 
2
CH CH CN ? ? and 
2 2
3
CH CH C CH
|
CH
? ? ?
4) 
2 2
Cl
|
CH CH C CH ? ? ? and 
2 2
CH CH CH CH ? ? ?
61. 0.24 g of a volatile substance displaced 53.78 mL of air at STP. The molecular mass of the
of the substance is
1) 24g 2) 53.78g 3) 50g 4) 100g
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Page 3


ROUGH
46. Which of the following does not have spherical as well as angular node ?
1) 1s 2) 2p 3) 3d 4) 5f
47. Equal masses of H
2
and He gases mixed in vessel recorded a pressure of 7.5 atm. The
partial pressure of H
2
 is
1) 4.8 atm 2) 2.4 atm 3) 5 atm 4) 7.5 atm
48. pH of a solution is changed from 2 to 5. What has been done to the solution ?
1) 3 times dilution 2) 3 times concentration
3) 100 times concentration 4) 1000 times dilution
49. The enthalpy of vaporization of benzene is 30.8 kJ mol
-1
 at its boiling point (80.1
0
C).
Calculate the entropy change in the condensation process.
1) +87.3 JK
-1
 mol
-1
2) -87.3 JK
-1
 mol
-1
3) 240 JK
-1
 mol
-1
4)  -240 JK
-1
 mol
-1
50. 2-3% gypsum is added to sample for
1) increasing hardness 2) decreasing setting time
3) increasing setting time 4) making is soft
51. AlCl
3
 and FeCl
3
 can be separated from their mixture by using
1) NH
4
OH 2) NaOH 3) H
2
O 4) magnetic method
52. Which of the following are correct w.r.t D
2
O?
1) It can be used as moderator 2) Its m.p. is 3.82
0
C
3) Its b.p. is 101.42
0
C                                        4) All of these
53. 0.5 molal aqueous solutions of each of NaCl, BaCl
2
 and AlCl
3
 have boiling points T
1
, T
2
and T
3
 respectively. Which of the following is correct ?
1) T
1
 > T
2
 > T
3
2) T
3
 > T
2
 > T
1
3) T
2
 > T
1
 > T
3
4) T
1
 > T
3
 > T
2
54. i) ? ? P Q A fast ? ?
ii) ? ? A R B slow ? ?
iii) ? ? B Q S T fast ? ? ?
are the elementary steps of the reactions,
2P Q 2R S T ? ? ? ?
The rate law of the reaction is:
1) r =  k [P] [Q] 2) r = k [P]
2
 [Q] [R]
3
3) 
? ? ? ? ? ?
1/2 1/3
r k P Q R ? 4) 
? ? ? ? ? ?
r k P Q R ?
55. NH
3
 gives brown precipitate with Nessler’s reagent. The formula of brown compound is :
1) K
2
HgI
4
2) 
2
H N Hg O Hg I ? ? ? ?
3) 
3 2 2
Ca P CaC ? 4) ? ?
4 4
2
NH MoO
CHEMISTRY
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ROUGH
56. In which of the following molecules/ions are all the bonds not equal ?
1) XeF
4
2) 
4
BF
?
3) SF
4
4) SiF
4
57. If 
0
P ? ? , the d
4
 is represented as
1 ) 
211 0
2g g
t e 2)
111 1
2g g
t e 3) 
0 22
2g g
t e 4) 
1 21
2g g
t e
58. CuSO
4
. H
2
O is blue in colour but anhydrous CuSO
4
 is white though in both copper
exists as Cu
2+
 ion with one unpaired electron the reason is :
1) CuSO
4
 (anhydrous) absorbs white light 2) CuSO
4
 . 5H
2
O absorbs blue light
3) Splitting of d-sub shell occurs in CuSO
4
 (anhydrous) and absorption of orange red light
takes place
4) Splitting of d-sub shell occurs in CuSO
4
.5H
2
O and absorption of orange-red light takes place
59. Which one of the following elements, when present as an impurity in silicon makes it a
p-type semiconductor?
1) 
As
2) 
P
3) 
In
4) 
Sb
60. Buna-N synthetic rubber is a copolymer of
1) 
2 2
CH CH CH CH ? ? ? and 
6 5 2
C H CH CH ?
2) 
2
CH CH CN ? ? and 
2 2
CH CH CH CH ? ? ?
3) 
2
CH CH CN ? ? and 
2 2
3
CH CH C CH
|
CH
? ? ?
4) 
2 2
Cl
|
CH CH C CH ? ? ? and 
2 2
CH CH CH CH ? ? ?
61. 0.24 g of a volatile substance displaced 53.78 mL of air at STP. The molecular mass of the
of the substance is
1) 24g 2) 53.78g 3) 50g 4) 100g
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ROUGH
62. A fixed mass of a gas is subjected to transformation of states from K to L to M to N and
back to K as shown
N M
P
L K
V
The pair of isochoric processes among the transformations of sates is
1) K to L and L to M 2) L to M and N to K 3) L to M and M to N 4) M to N and N to K
63. If fraction of space occupied in hcp is 'x' and in fcc is 'y', then
1) x > y 2) x < y 3) x = y 4) uncertain
64. The energy of second Bohr's orbit in hydrogen atom is – 328kJ mol
–1
. The energy of the
third Bohr's orbit of H is
1) – 583.11kJ mol
–1
2)  – 853.11kJ mol
–1
3) – 145.78 kJ mol
–1
4) – 511.83kJ mol
–1
65. Which one of the following constitutes a group of the isoelectronic species ?
1) 
2 2
N ,O , NO ,CO
? ?
2) 
2
2 2
C ,O ,CO, NO
? ?
3) 
2
2 2
NO ,C ,CN , N
? ? ?
4) 
2 2
2 2 2
CN , N ,O ,C
? ? ?
66. In which of the following the experimental dipole moment is more than what is expected
from theory ?
1) 
CH
3
CH
3
2) 
F
OH
 3) 
Cl
Cl
4) All of these
67. The reaction ,
? ? ? ?
6 6 2 2 2
15
C H ( ) O g 6CO g 3H O( )
2
? ? ? ? ? l l
 is spontaneous, then which of the following is
correct ?
1) 
H T S ? ? ?
2) 
H T S ? ? ?
3) 
H T S ? ? ?
4) H 0 and S 0 ? ? ? ?
68. The dissociation equilibrium of a gas AB
2
 can be represented as
          ? ? ? ? ? ?
2 2
2AB g 2AB g B g ?
? ? ?
? ? ?
The degree of dissociation is 'x' and is small compared to 1. The expression relating the
degree of dissociation (x) with equilibrium constant K
p
 and total pressure P is
1) 
? ?
1/3
p
2K / P 2) 
? ?
1/2
p
2K / P 3) ? ?
p
K / P 4) ? ?
p
2K / P
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Page 4


ROUGH
46. Which of the following does not have spherical as well as angular node ?
1) 1s 2) 2p 3) 3d 4) 5f
47. Equal masses of H
2
and He gases mixed in vessel recorded a pressure of 7.5 atm. The
partial pressure of H
2
 is
1) 4.8 atm 2) 2.4 atm 3) 5 atm 4) 7.5 atm
48. pH of a solution is changed from 2 to 5. What has been done to the solution ?
1) 3 times dilution 2) 3 times concentration
3) 100 times concentration 4) 1000 times dilution
49. The enthalpy of vaporization of benzene is 30.8 kJ mol
-1
 at its boiling point (80.1
0
C).
Calculate the entropy change in the condensation process.
1) +87.3 JK
-1
 mol
-1
2) -87.3 JK
-1
 mol
-1
3) 240 JK
-1
 mol
-1
4)  -240 JK
-1
 mol
-1
50. 2-3% gypsum is added to sample for
1) increasing hardness 2) decreasing setting time
3) increasing setting time 4) making is soft
51. AlCl
3
 and FeCl
3
 can be separated from their mixture by using
1) NH
4
OH 2) NaOH 3) H
2
O 4) magnetic method
52. Which of the following are correct w.r.t D
2
O?
1) It can be used as moderator 2) Its m.p. is 3.82
0
C
3) Its b.p. is 101.42
0
C                                        4) All of these
53. 0.5 molal aqueous solutions of each of NaCl, BaCl
2
 and AlCl
3
 have boiling points T
1
, T
2
and T
3
 respectively. Which of the following is correct ?
1) T
1
 > T
2
 > T
3
2) T
3
 > T
2
 > T
1
3) T
2
 > T
1
 > T
3
4) T
1
 > T
3
 > T
2
54. i) ? ? P Q A fast ? ?
ii) ? ? A R B slow ? ?
iii) ? ? B Q S T fast ? ? ?
are the elementary steps of the reactions,
2P Q 2R S T ? ? ? ?
The rate law of the reaction is:
1) r =  k [P] [Q] 2) r = k [P]
2
 [Q] [R]
3
3) 
? ? ? ? ? ?
1/2 1/3
r k P Q R ? 4) 
? ? ? ? ? ?
r k P Q R ?
55. NH
3
 gives brown precipitate with Nessler’s reagent. The formula of brown compound is :
1) K
2
HgI
4
2) 
2
H N Hg O Hg I ? ? ? ?
3) 
3 2 2
Ca P CaC ? 4) ? ?
4 4
2
NH MoO
CHEMISTRY
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ROUGH
56. In which of the following molecules/ions are all the bonds not equal ?
1) XeF
4
2) 
4
BF
?
3) SF
4
4) SiF
4
57. If 
0
P ? ? , the d
4
 is represented as
1 ) 
211 0
2g g
t e 2)
111 1
2g g
t e 3) 
0 22
2g g
t e 4) 
1 21
2g g
t e
58. CuSO
4
. H
2
O is blue in colour but anhydrous CuSO
4
 is white though in both copper
exists as Cu
2+
 ion with one unpaired electron the reason is :
1) CuSO
4
 (anhydrous) absorbs white light 2) CuSO
4
 . 5H
2
O absorbs blue light
3) Splitting of d-sub shell occurs in CuSO
4
 (anhydrous) and absorption of orange red light
takes place
4) Splitting of d-sub shell occurs in CuSO
4
.5H
2
O and absorption of orange-red light takes place
59. Which one of the following elements, when present as an impurity in silicon makes it a
p-type semiconductor?
1) 
As
2) 
P
3) 
In
4) 
Sb
60. Buna-N synthetic rubber is a copolymer of
1) 
2 2
CH CH CH CH ? ? ? and 
6 5 2
C H CH CH ?
2) 
2
CH CH CN ? ? and 
2 2
CH CH CH CH ? ? ?
3) 
2
CH CH CN ? ? and 
2 2
3
CH CH C CH
|
CH
? ? ?
4) 
2 2
Cl
|
CH CH C CH ? ? ? and 
2 2
CH CH CH CH ? ? ?
61. 0.24 g of a volatile substance displaced 53.78 mL of air at STP. The molecular mass of the
of the substance is
1) 24g 2) 53.78g 3) 50g 4) 100g
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ROUGH
62. A fixed mass of a gas is subjected to transformation of states from K to L to M to N and
back to K as shown
N M
P
L K
V
The pair of isochoric processes among the transformations of sates is
1) K to L and L to M 2) L to M and N to K 3) L to M and M to N 4) M to N and N to K
63. If fraction of space occupied in hcp is 'x' and in fcc is 'y', then
1) x > y 2) x < y 3) x = y 4) uncertain
64. The energy of second Bohr's orbit in hydrogen atom is – 328kJ mol
–1
. The energy of the
third Bohr's orbit of H is
1) – 583.11kJ mol
–1
2)  – 853.11kJ mol
–1
3) – 145.78 kJ mol
–1
4) – 511.83kJ mol
–1
65. Which one of the following constitutes a group of the isoelectronic species ?
1) 
2 2
N ,O , NO ,CO
? ?
2) 
2
2 2
C ,O ,CO, NO
? ?
3) 
2
2 2
NO ,C ,CN , N
? ? ?
4) 
2 2
2 2 2
CN , N ,O ,C
? ? ?
66. In which of the following the experimental dipole moment is more than what is expected
from theory ?
1) 
CH
3
CH
3
2) 
F
OH
 3) 
Cl
Cl
4) All of these
67. The reaction ,
? ? ? ?
6 6 2 2 2
15
C H ( ) O g 6CO g 3H O( )
2
? ? ? ? ? l l
 is spontaneous, then which of the following is
correct ?
1) 
H T S ? ? ?
2) 
H T S ? ? ?
3) 
H T S ? ? ?
4) H 0 and S 0 ? ? ? ?
68. The dissociation equilibrium of a gas AB
2
 can be represented as
          ? ? ? ? ? ?
2 2
2AB g 2AB g B g ?
? ? ?
? ? ?
The degree of dissociation is 'x' and is small compared to 1. The expression relating the
degree of dissociation (x) with equilibrium constant K
p
 and total pressure P is
1) 
? ?
1/3
p
2K / P 2) 
? ?
1/2
p
2K / P 3) ? ?
p
K / P 4) ? ?
p
2K / P
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ROUGH
69. The pH of water at 298 K is 7.0. If water is heated to 350 K, then
1) pH will decrease, water will become acidic     2) pH will remain same
3) pH will increase, water wil remain neutral     3) pH will decrease, water will remain neutral
70. 1 mole of each of A and B form an ideal solution of vapour pressure 100 mm Hg. Addition
of 2 moles of B to it, decrease the vapour pressure by 20 mm Hg. Vapour pressures of A
and B in pure state are respectively
1) 100 and 100 mm Hg 2) 100 and 80 mm Hg
3) 60 and 140 mm Hg 4) 140 and 60 mm Hg
71. A 4.0 molar aqueous solutio of NaCl is prepared and 500mL of this solution is electrolysed.
This leads to the evolution of chlorine gas at one of the electrodes. The total number of
moles of chlorine gas evolveed is
1) 0.5 2) 1.0 3) 2.0 4) 3.0
72. For the given three cells, which of the following is correct?
a) ? ? ? ?
2 2
1
Zn Zn 1.0M Cu 1.0M Cu;E
? ?
b) ? ? ? ?
2 2
2
Zn Zn 1.0M Cu 10.0M Cu;E
? ?
c) ? ? ? ?
2 2
3
Zn Zn 10.0M Cu 1.0M Cu;E
? ?
1) 
1 2 3
E E E ? ? 2) 
3 2 1
E E E ? ? 3) 
2 1 3
E E E ? ? 4) 
1 2 3
E E E ? ?
73. Which of the following graphs represents the first order reaction ?
1) Rate
Conc.
Slope=k 2) 
Conc.
Time
3) 
log [A]
Time
Slope=
-k
2.303
log[A]
0
Intercept constant
4) All represent 1st order reaction
74. A colloidal solution is subjected to an electrical field. The particles move towards
anode. The coagulation of same sol is studied using NaCl, BaCl
2
 and AlC
3
 solu-
tions. Their coasgulating power should be
1) NaCl > BaCl
2
 > AlCl
3
                         2) BaCl
2
 > AlCl
3
 > NaCl
3) AlCl
3
 > BaCl
2
 > NaCl  4) BaCl
2
 > NaCl > AlCl
3
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Page 5


ROUGH
46. Which of the following does not have spherical as well as angular node ?
1) 1s 2) 2p 3) 3d 4) 5f
47. Equal masses of H
2
and He gases mixed in vessel recorded a pressure of 7.5 atm. The
partial pressure of H
2
 is
1) 4.8 atm 2) 2.4 atm 3) 5 atm 4) 7.5 atm
48. pH of a solution is changed from 2 to 5. What has been done to the solution ?
1) 3 times dilution 2) 3 times concentration
3) 100 times concentration 4) 1000 times dilution
49. The enthalpy of vaporization of benzene is 30.8 kJ mol
-1
 at its boiling point (80.1
0
C).
Calculate the entropy change in the condensation process.
1) +87.3 JK
-1
 mol
-1
2) -87.3 JK
-1
 mol
-1
3) 240 JK
-1
 mol
-1
4)  -240 JK
-1
 mol
-1
50. 2-3% gypsum is added to sample for
1) increasing hardness 2) decreasing setting time
3) increasing setting time 4) making is soft
51. AlCl
3
 and FeCl
3
 can be separated from their mixture by using
1) NH
4
OH 2) NaOH 3) H
2
O 4) magnetic method
52. Which of the following are correct w.r.t D
2
O?
1) It can be used as moderator 2) Its m.p. is 3.82
0
C
3) Its b.p. is 101.42
0
C                                        4) All of these
53. 0.5 molal aqueous solutions of each of NaCl, BaCl
2
 and AlCl
3
 have boiling points T
1
, T
2
and T
3
 respectively. Which of the following is correct ?
1) T
1
 > T
2
 > T
3
2) T
3
 > T
2
 > T
1
3) T
2
 > T
1
 > T
3
4) T
1
 > T
3
 > T
2
54. i) ? ? P Q A fast ? ?
ii) ? ? A R B slow ? ?
iii) ? ? B Q S T fast ? ? ?
are the elementary steps of the reactions,
2P Q 2R S T ? ? ? ?
The rate law of the reaction is:
1) r =  k [P] [Q] 2) r = k [P]
2
 [Q] [R]
3
3) 
? ? ? ? ? ?
1/2 1/3
r k P Q R ? 4) 
? ? ? ? ? ?
r k P Q R ?
55. NH
3
 gives brown precipitate with Nessler’s reagent. The formula of brown compound is :
1) K
2
HgI
4
2) 
2
H N Hg O Hg I ? ? ? ?
3) 
3 2 2
Ca P CaC ? 4) ? ?
4 4
2
NH MoO
CHEMISTRY
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56. In which of the following molecules/ions are all the bonds not equal ?
1) XeF
4
2) 
4
BF
?
3) SF
4
4) SiF
4
57. If 
0
P ? ? , the d
4
 is represented as
1 ) 
211 0
2g g
t e 2)
111 1
2g g
t e 3) 
0 22
2g g
t e 4) 
1 21
2g g
t e
58. CuSO
4
. H
2
O is blue in colour but anhydrous CuSO
4
 is white though in both copper
exists as Cu
2+
 ion with one unpaired electron the reason is :
1) CuSO
4
 (anhydrous) absorbs white light 2) CuSO
4
 . 5H
2
O absorbs blue light
3) Splitting of d-sub shell occurs in CuSO
4
 (anhydrous) and absorption of orange red light
takes place
4) Splitting of d-sub shell occurs in CuSO
4
.5H
2
O and absorption of orange-red light takes place
59. Which one of the following elements, when present as an impurity in silicon makes it a
p-type semiconductor?
1) 
As
2) 
P
3) 
In
4) 
Sb
60. Buna-N synthetic rubber is a copolymer of
1) 
2 2
CH CH CH CH ? ? ? and 
6 5 2
C H CH CH ?
2) 
2
CH CH CN ? ? and 
2 2
CH CH CH CH ? ? ?
3) 
2
CH CH CN ? ? and 
2 2
3
CH CH C CH
|
CH
? ? ?
4) 
2 2
Cl
|
CH CH C CH ? ? ? and 
2 2
CH CH CH CH ? ? ?
61. 0.24 g of a volatile substance displaced 53.78 mL of air at STP. The molecular mass of the
of the substance is
1) 24g 2) 53.78g 3) 50g 4) 100g
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62. A fixed mass of a gas is subjected to transformation of states from K to L to M to N and
back to K as shown
N M
P
L K
V
The pair of isochoric processes among the transformations of sates is
1) K to L and L to M 2) L to M and N to K 3) L to M and M to N 4) M to N and N to K
63. If fraction of space occupied in hcp is 'x' and in fcc is 'y', then
1) x > y 2) x < y 3) x = y 4) uncertain
64. The energy of second Bohr's orbit in hydrogen atom is – 328kJ mol
–1
. The energy of the
third Bohr's orbit of H is
1) – 583.11kJ mol
–1
2)  – 853.11kJ mol
–1
3) – 145.78 kJ mol
–1
4) – 511.83kJ mol
–1
65. Which one of the following constitutes a group of the isoelectronic species ?
1) 
2 2
N ,O , NO ,CO
? ?
2) 
2
2 2
C ,O ,CO, NO
? ?
3) 
2
2 2
NO ,C ,CN , N
? ? ?
4) 
2 2
2 2 2
CN , N ,O ,C
? ? ?
66. In which of the following the experimental dipole moment is more than what is expected
from theory ?
1) 
CH
3
CH
3
2) 
F
OH
 3) 
Cl
Cl
4) All of these
67. The reaction ,
? ? ? ?
6 6 2 2 2
15
C H ( ) O g 6CO g 3H O( )
2
? ? ? ? ? l l
 is spontaneous, then which of the following is
correct ?
1) 
H T S ? ? ?
2) 
H T S ? ? ?
3) 
H T S ? ? ?
4) H 0 and S 0 ? ? ? ?
68. The dissociation equilibrium of a gas AB
2
 can be represented as
          ? ? ? ? ? ?
2 2
2AB g 2AB g B g ?
? ? ?
? ? ?
The degree of dissociation is 'x' and is small compared to 1. The expression relating the
degree of dissociation (x) with equilibrium constant K
p
 and total pressure P is
1) 
? ?
1/3
p
2K / P 2) 
? ?
1/2
p
2K / P 3) ? ?
p
K / P 4) ? ?
p
2K / P
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69. The pH of water at 298 K is 7.0. If water is heated to 350 K, then
1) pH will decrease, water will become acidic     2) pH will remain same
3) pH will increase, water wil remain neutral     3) pH will decrease, water will remain neutral
70. 1 mole of each of A and B form an ideal solution of vapour pressure 100 mm Hg. Addition
of 2 moles of B to it, decrease the vapour pressure by 20 mm Hg. Vapour pressures of A
and B in pure state are respectively
1) 100 and 100 mm Hg 2) 100 and 80 mm Hg
3) 60 and 140 mm Hg 4) 140 and 60 mm Hg
71. A 4.0 molar aqueous solutio of NaCl is prepared and 500mL of this solution is electrolysed.
This leads to the evolution of chlorine gas at one of the electrodes. The total number of
moles of chlorine gas evolveed is
1) 0.5 2) 1.0 3) 2.0 4) 3.0
72. For the given three cells, which of the following is correct?
a) ? ? ? ?
2 2
1
Zn Zn 1.0M Cu 1.0M Cu;E
? ?
b) ? ? ? ?
2 2
2
Zn Zn 1.0M Cu 10.0M Cu;E
? ?
c) ? ? ? ?
2 2
3
Zn Zn 10.0M Cu 1.0M Cu;E
? ?
1) 
1 2 3
E E E ? ? 2) 
3 2 1
E E E ? ? 3) 
2 1 3
E E E ? ? 4) 
1 2 3
E E E ? ?
73. Which of the following graphs represents the first order reaction ?
1) Rate
Conc.
Slope=k 2) 
Conc.
Time
3) 
log [A]
Time
Slope=
-k
2.303
log[A]
0
Intercept constant
4) All represent 1st order reaction
74. A colloidal solution is subjected to an electrical field. The particles move towards
anode. The coagulation of same sol is studied using NaCl, BaCl
2
 and AlC
3
 solu-
tions. Their coasgulating power should be
1) NaCl > BaCl
2
 > AlCl
3
                         2) BaCl
2
 > AlCl
3
 > NaCl
3) AlCl
3
 > BaCl
2
 > NaCl  4) BaCl
2
 > NaCl > AlCl
3
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75. Which is wrongly reported ?
1) Spelter : impure zinc 2) Pig iron : impure iron
3) Sphalerite : ZnO 4) Blister Copper : Impure Copper
76. 100 cm
3
 of a sample of H
2
O
2
 gives 1000cm
3
 of O
2
 at STP. The given sample is
1) 10 volume H
2
O
2
2) 100 volume H
2
O
2
3) 10% H
2
O
2
 (W/V) 4) 2.786N
77. Cs
2
CO
3
 is highly soluble in water while BaCO
3
 quite sparingly soluble. Which of the
following is correct ?
1) 
hydr
. ? H dominates over lattice energy in case of Cs
2
CO
3
 while it is opposite in case of BaCO
3
2) 
hydr
. ? H dominates over lattice energy in case of BaCO
3
 while its opposite in case of  Cs
2
CO
3
3) K
sp
 of both  Cs
2
CO
3
 and BaCO
3
is high 4) K
sp
 of both  Cs
2
CO
3
 and BaCO
3
is low
78. Which of these is not a monomer for a high molecular mass silicon polymer ?
1) 
3
Me SiCl 2) 
3
PhSiCl 3) 
3
MeSiCl 4) 
2 2
Me SiCl
79. In 
3
4
PO
?
, the bond order of P– O bond and formal charge on O – atom are, respectively
1) 0.25, – 0.25 2) 0.50, – 0.50 3) 1.25, – 0.75 4) 0.75, – 1.25
80. Chormite ore ? ? ? ?
2 3
Na CO /air
fuse
X Y ? ? ? ? ? .X and Y are e
1) 
2 3 2 2 7
Cr O and Na Cr O 2) 
2 3 2 2 7
FeO.Cr O and Na Cr O
3) 
2 3 2 4
FeO.Cr O and Na CrO 4) 
2 3 2 4
Cr O and Na CrO
81. Kjeldahl's method can not be used to estimate nitrogen in which of the following com-
pounds?
1) 
N
2) 
NH
2
C NH
2
O
3) NH
2
4) All of these
82. Which of the following is the most stable carbocation
1) 
O
2
N
CH
2 2) 
CH
2
3) 
CH
3
CH
2 4)
CH
3
O CH
2
83. How are the following related ?
I)
CH
3
CH
2
CH
2
N CH
3
H
II) 
CH
3
CH
2
N CH
3
CH
3
III) CH
3
CH
2
CH
2
CH
2
NH
2
1) I and II are position isomers 2) I and III are chain isomers
3) I, II and III are metamers 4) I, II and III are functional isomers
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