CH
3 3 3
1. In HS
, I,RNH
2
,NH
3
order of proton accepting
tendency will be CISE- [AIPMT-2001]
(1) I
> NH
3
> RNH
2
> HS
(2) NH
3
> RNH
2
> HS
>I
(3) RNH
2
> NH
3
> HS
>I
(4) HS
> RNH
2
>NH
3
> I
2. :[AIPMT2002]
(1) Resonating structures
8. Which of the following presents the correct order of
the acidity in the given compounds ? [AIPMT 2007]
(1) BrCH
2
COOH > ClCH
2
COOH > FCH
2
COOH >
CH
3
COOH
(2) FCH
2
COOH > ClCH
2
COOH > BrCH
2
COOH >
CH
3
COOH
(3) CH
3
COOH > BrCH
2
COOH > ClCH
2
COOH >
FCH
2
COOH
(4) FCH
2
COOH > CH
3
COOH > BrCH
2
COOH >
ClCH
2
COOH
9. Base strength is in the order of
(2) Tautomers
(i)
CH
3
CH
2
(ii)
(3) Geometrical isomers
(4) Optical isomers
3. Which of the following is correct for stability of
phenoxide ion? [AIPMT 2002]
(1) Resonating structure of benzene ring
(2) Localization of -electrons in phenoxide ion
(iii) [AIPMT 2008]
(1) (ii) > (i) > (iii) (2) (iii) > (iii) > (i)
(3) (i) > (iii) > (ii) (4) (i) > (ii) > (iii)
10. Which of the following compounds has the most
acidic nature ? [ AIPMT-2010]
(3) Delocalization of -electrons in phenoxide ion
(4) All of the above
4. The molecule having largest dipole moment among
the following is: [AIPMT 2003]
(1)
CH
2
OH
OH
(2)
OH
(1) CHI
3
(2) CH
4
(3) CHCI
3
(4) CCI
4
OH
CH
5. Among the following the dissociation constant is high-
est for : [AIPMT 2004]
(1) C
6
H
5
OH (2) C
6
H
5
CH
2
OH
(3) (4)
(3) CH C CH (4) CH NH
+
Cl¯
11. Which one of the following is most reactive towards
electrophilic reagent ? [AIPMT 2011 Scr.]
6. Which amongst the following is the most stable
carbocation ? [AIPMT-2005]
(1)
CH
3
(2)
CH
3
(1)
+
CH
3
C H
CH
3
(2)
CH
3
CH
3
C
+
CH
3
(3)
OCH
3
CH
3
NHCOCH
3
(4)
OH
CH
3
CH
2
OH
(3)
+
(4) CH
3
+
3
CH
3
12. The correct order of increasing bond length of CH,
7. Which of the following is more basic than aniline?
[AIPMT 2006]
(1) p-Nitroaniline (2) Benzyl amine
(3) Diphenyl amine (4) Triphenyl amine
CO, CC and C=C is : [AIPMT 2011, SMD]
(1) CH < C=C < CO < CC
(2) CC < C=C < CO < CH
(3) CO < CH < CC < C=C
(4) CH < CO < CC < C=C
O
N
1
13. The correct order of decreasing acid strength of
trichloroacetic acid (A), trifluoroacetic acid (B), acetic acid
(C) and formic acid (D) is : [AIPMT 2012 (Pre.)]
(1) B > A > D > C (2) B > D > C > A
(3) A > B > C > D (4) A > C > B > D
14. The order of stability of the following tautomeric
compounds is : [NEET2013]
19. The pair of electron in the given carbanion,
CH
3
C C
, is present in which of the following
orbitals? [NEET 2016- Phase -I]
(1) sp (2) 2p (3) sp
3
(4) sp
2
20. The correct order of strengths of the carboxylic ac-
ids : [ NEET -2016 Phase -II ]
OH O
O O
COOH
COOH
COOH
| ||
|| ||
CH
2
=
C
CH
2
C
CH
3
CH
3
C
CH
2
C
CH
3
I II

is :

OH
O
(1) II > I > III (2) I > II > III
| ||
CH
C
CH
C
CH
(3) II > III > I (4) III > II > I
3
(1) III > II > I (2) II > I > III
(3) II > III > I (4) I > II > III
III
3
21. In which of the following molecules, all atoms are
coplanar ? [ NEET -2016 Phase -II ]
15. Some meta - directing substituents in aromatic
substitution are given. Which one is most deactivating ?
[NEET 2013]
(1) (2)
(1) SO
3
H (2) COOH
(3) NO
2
(4) CN
CH
3
CN
16. Which of the following will not be soluble in sodium
hydrogen carbonate? [AIPMT-2014]
(3) (4)
C C
CH
3
CN
(1) 2, 4, 6-trinitrophenol
(2) Benzoic acid (Moderate)
(3) o-Nitrophenol
(4) Benzenesulphonic acid
4
22. In pyrrole
5
3
2
the electron density is maxi-
H
17. The total number of p-bond electrons in the following
structure is :- [AIPMT-2015]
mum on [ NEET -2016 Phase -II ]
(1) 2 and 5 (2) 2 and 3
H
3
C
H
3
C
H H
H
CH
3
(3) 3 and 4 (4) 2 and 4
23. Which one is the most acidic compound ?
[NEET -2017]
H
2
C
H
CH
3
OH
OH
(1) 8 (2) 12 (3) 16 (4) 4
18. Consider the following compounds [AIPMT-2015]
CH
3
Ph
|
|
(1)
CH
3
(2)
CH
3
CCH
|
CH
3
PhCPh
CH
3
OH
O
2
N
OH
NO
2
(I) (II) (III)
Hyperconjugation occurs In :-
(1) II only (2) III only (3) I and III
(4) I only
(3)
NO
2
(4)
NO
2
O
24. The correct statement regarding electrophile is
[NEET -2017]
(1) Electrophile is a negatively charged species and
can form a bond by accepting a pair of electrons
from a nucleophile.
(2) Electrophile is a negatively charged species and
can from a bond by accepting a pair of electrons
from another electrophile.
(3) Electrophiles are generally neutral species and
can from a bond by accepting a pair of electrons
from a nucleophile.
(4) Electrophile can be either neutral or positively
charged species and can form a bond by accepting a
pair of electrons from a nucleophile.
25. Which of the following molecules represents the
order of hybridisation sp
2
, sp
2
, sp, sp from left to
right atoms ? [ NEET - 2018 ]
(1) CH
2
= CH CH = CH
2
(2) CH
2
= CH C
CH
30. Assertion : The pK
a
of acetic acid is lower than
that of phenol. [AIIMS 2004]
Reason : Phenoxide ion is more resonance stabilised.
(1) If both assertion and reason are true and reason
is a correct explanation of assertion.
(2) If both assertion and reason are true but reason
is not a correct explanation of assertion.
(3) If assertion is true but reason is false.
(4) If assertion and reason both are false.
31. Pyridine is less basic than triethylamine because :
[AIIMS 2005]
(1) Pyridine has aromatic character
(2) Nitrogen in pyridine is sp
2
hybridised
(3) Pyridine is a cyclic system
(4) In pyridine, lone pair of nitrogen is delocalised
32. The decreasing order of the stability of the ions :
[AIIMS 2007]
(3) HC
C C
CH
(4) CH
3
CH = CH CH
3
CH
3
CH
CH
3
CH
3
CH
OCH
3
26. The number of sigma () and pi () bonds in pent-2-
en-4-yne is:- [ NEET -2019 ]
(1) 10 bonds and 3 bonds
(2) 8 bonds and 5 bonds
(3) 11 bonds and 2 bonds
(4) 13 bonds and no bond
GOC_AIIMS
27. The most stable ion is : [AIIMS 2002]
(I) (II)

CH
3
CH
COCH
3
(III)
(1) I > II > III (2) III > II > I
(3) II > III > I (4) II > I > III
33. Assertion : Amines are more basic than esters and
ethers. [AIIMS 2007]
Reason : Nitrogen is less electronegative than oxy-

(1) CH
3
CH
2
(2)
(CH
3
)
2
CH
gen. It is in better position to accommodate the posi-
tive charge on the proton.
(3) (CH
3
)
3
(4) C
6
H

5
CH
2
(1) If both assertion and reason are true and reason
is a correct explanation of assertion.
28. Among the following the strongest acid is :
[AIIMS 2003]
(1) CH
3
COOH
(2) C
6
H
5
COOH
(3) m-CH
3
OC
6
H
4
COOH
(4) p-CH
3
OC
6
H
4
COOH
29. Among the following the weakest base is :
[AIIMS 2003]
(1) C
6
H
5
CH
2
NH
2
(2) C
6
H
5
CH
2
NHCH
3
(3) O
2
N.CH
2
NH
2
(4) CH
3
NHCHO
(2) If both assertion and reason are true but reason
is not a correct explanation of assertion.
(3) If assertion is true but reason is false.
(4) If assertion and reason both are false.
34. Maximum enol content is in : [AIIMS 2008]
(1) (2)
(3) (4)
Cl
35. Among the following the strongest nucleophile is
[AIIMS-2009]
41. Which has the highest nucleophilicity ?
[AIIMS - 2016]
(1) C
2
H
5
S
(2) CH
3
COO
(3) CH
3
NH
2
(4) NCCH
(1) F
(2) OH
(3)
CH
3
(4)
NH
2
36. Which of the following carbocations is expected to
be most stable ? [AIIMS-2009]
42. The most stable carbocation is [AIIMS-2017]
NO
2
NO
2
(1) (2)
(1)
+
NO
2
(2)
Y
H
NO
2
H
(3) (4)
43. Consider the following compounds :
[ AIIMS -2018 ]
(3)
Y
H
(4)
Y
COOH
COOH
COOH
37. Which of the following is an electrophile ?
[ AIIMS - 2014]
(1) CCl
2
(2) CH
3
(3) H
2
O (4) NH
3
38. Rate of the reaction, [AIIMS - 2015]
OCH
3
(I)
(II)
Cl
(III)
CH
3
C
O
O
+ Nu
R C + Z
Z
Nu
Write correct decreasing order of acidic strength ?
(1) II > I > III (2) III > I > II
(3) III > II > I (4) I > II > III
is faster when Z is
(1)
(2)
NH
2
(3)
OC
2
H
5
(4)
OCOCH
3
44. Order of acidic nature [AIIMS -2019]
39. The correct stability order for the following species
OH
is [ AIIMS-2016 ]
OH
NO
2
(A)
O
(I)
(C)
O
(III)
(B)
(D)
(II)
(IV)
(a)
NO
2
OH
(b)
(1) II > IV > I >III (2) I > II > III >IV
(3) II > I > IV >III (4) I > III > II >IV
40. Relative stabilities of the following carbocations will
be in the order. [ AIIMS -2016]
(c)
OH
(d)
CH
3
CH
3
CH
2
CH
2
OCH
3
CH
3
A
B
C
(1) C > B > A (2) C < B < A
(3) B > C > A (4) C < A> B
(1) a > c > d > b (2) a > b > d > c
(3) a > b > c > d (4) d > c > b > a
45. Compare stability of free radicals [AIIMS -2019]
52. CH
3
COOH is weaker acid than H
2
SO
4
. It is due to :
[RPMT2005]
(I) CH CHCH
(II)
CH
2
(1) more ionization (2) less ionization
3 3
(3) covalent bond (4) electrovalent bond
(III) CH
2
CH(CH
3
)
2
(IV) CH
2
CH
3
(1) II > I > III > IV (2) II > I > IV > III (3) I >
II > III > IV (4) IV > III > I > II
46. (i) F
3
CCOOH, (ii) CH
3
COOH,
(iii) C
6
H
5
COOH (iv) CH
3
CH
2
COOH
Correct order of
p
K
a
value is [AIIMS -2019]
(1) i > iii > ii > iv (2) iv > ii > iii > i
(3) iv > iii > ii > i (4) i > ii > iv > iii
NH
2
53. Which of the following free radicals is the most stable ?
[AFMC 2007]
(1) Primary (2) Methyl
(3) Secondary (4) Tertiary
GOC_AIEEE
54. In the following benzyl/allyl system
R CH = CH
2
and
(R is alkyl group)
HN
47. (i)
(iii)
CH
3
NH
2
(ii)
(iv) (
i
v
)
OCH
3
NH
2
decreasing order of inductive effect is :
[AIEEE-2002]
(1) (CH
3
)
3
C > (CH
3
)
2
CH > CH
3
CH
2
(2) CH
3
CH
2
> (CH
3
)
2
CH > (CH
3
)
3
C
(3) (CH
3
)
2
CH > CH
3
CH
2
> (CH
3
)
3
C
(4) (CH
3
)
3
C > CH
3
CH
2
> (CH
3
)
2
CH
55. In the anion HCOO
the two carbon-oxygen bonds
are found to be of equal length. What is the reason
for it? [AIEEE 2003]
(1) electronic orbitals of carbon atom are hybridised
(2) the C = O bond is weaker than the C O bond
(3) the anion HCOO
has two equivalent resonating
Correct order of basic strength is [AIIMS -2019]
(1) iii > ii > iv > i (2) iv > iii > ii > i
(3) iii > ii > i > iv (4) iii > i > ii > iv
48. The most stable carbonium ion is : [AFMC 2002]
structures
(4) the anion is obtained by removal of a proton from
the acid molecule.
56. The correct order of increasing basic nature for the
bases NH
3
, CH
3
NH
2
and (CH
3
)
2
NH is : [AIEEE-2003]
(1) CH
3
CH
2
(2)
C
6
H
5
CH
2
(1) CH NH < NH < (CH ) NH
3 2 3 3 2
(2) (CH ) NH < NH < CH NH
(3) C H
CHC
6
H
5
(4) C H CH CH
2
3 2 3 3 2
6 5 6 5 2
(3) NH < CH NH < (CH ) NH
3 3 2 3 2
49. Which of the following is the weakest base ?
[RPMT 2000/2004]
(1) NH
3
(2)(CH
3
)
2
NH
(3) CH
3
NH
2
(4) (CH
3
)
3
N
50. Strong acid is : [RPMT 2001]
(1) CH
3
CO
2
H (2) CH
3
CH
2
CO
2
H
(3) Cl CH
2
COOH (4) F CH
2
CO
2
H
51. Which compound give CO
2
with NaHCO
3
?
[RPMT 2002]
(1) Phenol (2) Glycerol
(3) nbutanol (4) Acetic acid
(4) CH
3
NH
2
< (CH
3
)
2
NH < NH
3
57. Which of the following is the strongest base?
[AIEEE 2004]
(1) (2)
(3) (4)
58. Consider the acidity of the carboxylic acids:
[AIEEE 2004]
(i) PhCOOH (ii) o NO
2
C
6
H
4
COOH
(iii) p NO
2
C
6
H
4
COOH (iv) m NO
2
C
6
H
4
COOH
(1) i > ii > iii > iv (2) ii > iii > iv > i
(3) iii > ii > iv > i (4) ii > iv > iii > i
59. Among the following acid which has the lowest pK
a
value ? [AIEEE-2005]
(1) CH
3
CH
2
COOH (2) (CH
3
)
2
CH COOH
(3) HCOOH (4) CH
3
COOH
60. Amongst the following the most basic compound is
[AIEEE-2005]
(1) p-Nitroaniline (2) Acetanilide
(3) Aniline (4) Benzylamine
61. The increasing order of stability of the following free
radicals is : [AIEEE 2006]
65. The correct order of increasing basicity of the given
conjugate bases (R = CH
3
) is : [AIEEE-2010, 4/144]
(1) RCOO HC C R NH
2
(2) R HC C RCOO NH
2
(3) RCOO NH
2
HC C R
(4) RCOO HC C NH
2
R
66. The strongest acid amongst the following compounds
is : [AIEEE-2011]
(1) CH
3
COOH
(2) HCOOH
(3) CH
3
CH
2
CH(Cl)CO
2
H
(4) ClCH
2
CH
2
CH
2
COOH
67. Identify the compound that exhibits tautomerism.
[AIEEE-2011, 4/120]
(1) 2-Butene (2) Lactic acid
(1) (CH ) H < (CH ) < (C H ) H < (C H )
(3) 2-Pentanone (4) Phenol
3 2 3 3 6 5 2 6 5 3
(2) (C
6
H
5
)
2
< (C
6
H
5
)
2
H < (CH
3
)
3
< (CH
3
)
2
H
(3) (C
6
H
5
)
2
H < (C
6
H
5
)
3
H < (CH
3
)
3
< (CH
3
)
2
H
68. The correct order of acid strength of the following
compounds: [AIEEE-2011]
(A) Phenol (B) p-Cresol
(4) (CH
3
)
2
H < (CH
3
)
3
< (C
6
H
5
)
3
< (C
6
H
5
)
2
H
(C) m-Nitrophenol (D) p-Nitrophenol
is :
62. The correct order of increasing acid strength of the
compounds [AIEEE 2006]
(a) CH
3
CO
2
H (b) MeOCH
2
CO
2
H
Me
(1) D > C > A > B (2) B > D > A > C
(3) A > B > D > C (4) C > B > A > D
69. Ortho-Nitrophenol is less soluble in water than p
and m Nitrophenols because : [AIEEE-2012]
(c) CF
3
CO
2
H (d)
Me
CO
2
H
is
(1) Melting point of oNitrophenol is lower than those
of m and p isomers
(1) b < d < a < c (2) d < a < c < b
(3) d < a < b < c (4) a < d < c < b
63. Which one of the following is the strongest base in
aqueous solution? [AIEEE 2007]
(1) Dimethylamine (2) Methylamine
(3) Trimethylamine (4) Aniline
64. Arrange the carbanions, (CH
3
)
3
C, CCl
3
, (CH
3
)
2
CH,
C
6
H
5
CH
2
in order of their decreasing stability :
[AIEEE-2009, 4/144]
(2) oNitrophenol is more volatile in steam than those
of m and p isomers
(3) oNitrophenol shows Intramolecular Hbonding
(4) oNitrophenol shows Intermolecular Hbonding
70. Dipole moment is shown by :
[JEE Mains Online 2012]
(1) trans-2,3-dichloro-2-butene
(2) 1, 2-dichlorobenzene
(3) 1, 4-dichlorobenzene
(4) trans-1, 2-dinitroethene
(1) (CH
3
)
2
CH > CCl
3
> C
6
H
5
CH
2
> (CH
3
)
3
C
71. Among the following chloro-compound having the
lowest dipole moment is : [JEE Mains Online 2012]
(2) CCl
3
> C
6
H
5
CH
2
> (CH
3
)
2
CH > (CH
3
)
3
C
(1) CH
2
Cl
2
(2) CH
3
Cl
(3) (CH ) C > (CH ) CH > C H CH
> CCl
Cl Cl Cl H
3 3 3 2
6 5 2 3
(3)
C=C
(4)
C=C
(4) C
6
H
5
CH
2
> CCl
3
> (CH
3
)
3
C > (CH
3
)
2
CH
H
3
C
H
H
3
C
Cl
72. In the below mentioned compounds the decreasing order
of reactivity towards electrophilic substitution is
[JEE Mains Online 2012]
77. Which of the following compounds are antiaromatic :
[JEE Mains Online 2012]
OCH
3
CH
3
CF
3
(i) (ii) (iii) (iv)
(1) (iii) > (i) > (iv) > (ii)
(2) (iv) > (i) > (ii) > (iii)
(3) (ii) > (iii) > (i) > (iv)
(4) (i) > (ii) > (iii) > (iv)
(i)
(iv)
(ii)
(v)
(iii)
(vi)
73. The most basic compound among the following
is: [JEE Mains Online 2012]
(1) Acetanilide (2) Benzylamine
(3) p-Nitro aniline (4) Aniline
74. Among the following the order of reactivity toward
nucleophilic addition is: [JEE Mains Online 2012]
(1) (i) and (v) (2) (ii) and (v)
(3) (i) and (iv) (4) (v) and (vi)
78. The order of stability of the following carbocations:
[JEE Mains 2013]
CH
2
(1) HCHO > CH
3
CHO > CH
3
COCH
3
(2) CH
3
CHO > HCHO > CH
3
COCH
3
(3) CH
3
CHO > CH
3
COCH
3
> HCHO
(4) CH
3
COCH
3
> CH
3
CHO > HCHO
CH
2
= CH CH
2
; CH
3
CH
2
CH
2
;
I II
(1) III > II > I (2) II > III > I
(3) I > II > III (4) III > I > II
III
is :
75. Which of the following cannot be represented by
resonance structures? [JEE Mains Online 2012]
79. Arrange the following compounds in order of
decreasing acidity : [JEE Mains 2013]
(1) Dimethyl ether (2) Nitrate anion
(3) Carboxylate anion (4) Toluene
76. In the following compounds :
[JEE Mains Online 2012]
OH
;
Cl
(I)
OH
;
CH
3
(II)
OH
;
NO
2
(III)
OH
OCH
3
(IV)
H
(i)
(ii)
H
(iii)
H
(iv)
(1) II > IV > I > III (2) I > II > III > IV
(3) III > I > II > IV (4) IV > III > I > II
80. A solution of () 1 chloro 1 phenylethane is
toluene racemises slowly in the presence of a small
amount of SbCl
5
, due to the formation of :
the order of basicity is as follows :
(1) iv > iii > ii > i (2) iii > i > ii > iv
(3) ii > iii > i > iv (4) i > iii > ii > iv
[JEE Mains 2013]
(1) free radical (2) carbanion
(3) carbene (4) carbocation
N
N
N
O
N
O
3 3 3
81. The order of basicity of amines in gaseous state is :
[JEE Mains Online 2013]
(1) 3° > 2° > NH
3
>
(2) 1° > 2° > 3° > NH
3
(3) 3° > 2° > 1° > NH
3
(4) NH
3
> 1° > 2° >
82. Which one of the following is most Stable?
[JEE Mains Online 2013]
87. Which one of the following statements is not cor-
rect ? [JEE Mains Online 2014]
(1) Alcohols are weaker acids than water.
(2) Acid strength of alcohol decreases in the follow-
ing order.
RCH
2
OH > R
2
CHOH > R
3
COH
(3) Carbon-oxygen bond length in methanol, CH
3
OH
is shorter than that of C O bond length in phenol.
O
(4) The bond angle
C H
in methanol is 108.9º.
(1) (2) (3)
Ph
(4)
Ph
88. Which of the following molecules has two sigma()
and two pi() bonds ? [JEE Mains Online 2014]
83. Amongst the following alcohols which would react
fastest with conc. HCl and ZnCl
2
?
(1) C
2
H
4
(2) N
2
F
2
(3) C
2
H
2
Cl
2
(4) HCN
[JEE Mains Online 2013]
(1) 2-pentanol (2) 2-methylbutanol
(3) pentanol (4) 2-methylbutan-2-ol
84. Given [JEE Mains Online 2013]
CH
3
Cl NO
2
89. In allene (C
3
H
4
), the type(s) of hybridization of the
carbon atoms is(are) : [JEE Mains Online 2014]
(1) sp and sp
3
(2) sp
2
and sp
(3) only sp
2
(4) sp
2
and sp
3
90. Arrange the following amines in the order of
increasing basicity [JEE Mains Online 2015]
(a) (b) (c) (d)
In the above compounds correct order of reactivity
in electrophilic substitution reactions will be :
(1) b > c > a > d (2) d > c > b > a
(3) a > b > c > d (4) b > a > c > d
85. Considering the basic strength of amines in aqueous
solution, which one has the smallest pK
b
value?
[JEE Mains 2014]
(1) CH
3
NH
2
(2) (CH
3
)
3
N
(3) C
6
H
5
NH
2
(4) (CH
3
)
2
NH
86. In which of the following pairs A is more stable than
B ? [JEE Mains Online 2014]
A B
(1)
(2)
NH
2
<
OCH
3
NH
2
<
NH
2
<
NO
2
NH
2
<
OCH
3
NH
2
NH
2
NH
2
NO
2
NH
2
< CH
3
NH
2
< CH
3
NH
2
NH
2
(1)
(3)
CH
3
NH
2
< < <
(2)
NH
2
NH
2
OCH
3
NH
2
NO
2
(3)
(4)
< <
< CH
3
NH
2
(4)
Ph C
, (CH ) C
NO
2
OCH
3
2
2
91. Which compound exhibits maximum dipole moment
among the following? [JEE Mains Online 2015]
96. Which of the following compounds is most reactive
to an aqueous solution of sodium carbonate?
(1)
NO
NO
NH
2
(2)
(1) (2)
[JEE Mains Online 2017]
(3) (4)
(3)
NO
2
(4)
NO
2
NH
2
NH
2
97. The increasing order of the boiling points for the
following compounds is : [JEE Mains Online 2017]
(I) C
2
H
5
OH (II) C
2
H
5
Cl
(III) C
2
H
5
CH
3
(IV) C
2
H
5
OCH
3
(1) (III) < (IV) < (II) < (I)
(2) (IV) < (III) < (I) < (II)
(3) (II) < (III) < (IV) < (I)
(4) (III) < (II) < (I) < (IV)
92. The “N” which does not contribute to the basicity
for the compound is : [JEE Mains Online 2016]
6
H
1N
5
N
7
8
2
N
4
N9
3
H
98. Which of the following compounds will show
highest dipole moment? [JEE Mains Online 2017]
O
(I)
O
(II)
O
(1) N7 (2) N1 (3) N9 (4) N3
(III)
O
(IV)
O
93. Identify the reaction which does not liberate hydro-
gen : [JEE Mains Online 2016]
(1) Allowing a solution of sodium in liquid ammonia
to stand.
(2) Reaction of zinc with aqueous alkali.
(1) (I) (2) (II) (3) (III) (4) (IV)
99. Among the following compounds, the increasing order
of their basic strength is: [JEE Mains Online 2017]
NH
2
(3) Reaction of lithium hydride with B
2
H
6
.
(4) Electrolysis of acidified water using Pt electrodes.
94. Which of the following molecules is least resonance
stabilized? [JEE Main 2017]
(I)
(III)
CH
3
(II)
N
H
(IV)
(1)
(3)
(2)
(4)
(1) (I) < (II) < (IV) < (III)
(2) (I) < (II) < (III) < (IV)
(3) (II) < (I) < (IV) < (III)
(4) (II) < (I) < (III) < (IV)
NH
2
95. The increasing order of basicity of the following
100. The most polar compound among the following is
[JEE Mains Online 2018]
compounds is : [JEE Main 2017]
(a)
NH
2
(b)
NH
NH
2
F
(1)
F
(2)
F
( 3 )
(c)
NH
(d) NHCH
3
(1) (d) < (b) < (a) < (c)
(2) (a) < (b) < (c) < (d)
(3) (b) < (a) < (c) < (d)
(4) (b) < (a) < (d) < (c)
F
(4)
F
O
N
N
F
101. The number of sp
2
hybridised carbons present in
’Aspartame’ is ------------- [JEE Mains online 2020]
106. The correct order of stability for the following
alkoxides is : [JEE Mains online 2020]
O
O
102. The decreasing order of basicity of the following
amines is [JEE Mains online 2020]
NO
2
NO
2
O
O
2
N
(I)
(III) (
I
I
I
)
NH
2
NH
2
(II)
(IV) (IV)
N
H
(A) (B) (C)
(1) (B) > (C) > (A) (2) (C) > (B) > (A)
(3) (C) > (A) > (B) (4) (B) > (A) > (C)
107. The major product in the following reactions is:
[JEE Mains online 2020]
O
+H
3
O
(1) (III) > (II) > (I) > (IV)
(2) (II) > (III) > (IV) > (I)
(3) (III) > (I) > (II) > (IV)
(4) (I) > (III) > (IV) > (II)
103. Which of the following has the shortest CCl bond?
[JEE Mains online 2020]
(1)
OH
CH
3
CH
3
O
(2)
OH
CH
3
(1) Cl CH = CH NO
2
O
OH
OH
(2) Cl CH = CH OCH
3
(3) Cl CH = CH CH
3
(4) Cl CH = CH
2
(3)
HO
CH
3
(4)
CH
3
104. The increasing order of pK
b
for the following com-
108. THe increasing order of basicity for the followign
intermediates is (form weak to strong)
pounds will be : [JEE Mains online 2020]
N
CH
3
H
3
C
C
CH
3
H
2
C
=
CH
CH
2
HCC
CH
3
CN
(A) NH
2
CH NH (B)
N
NH
(i) (ii)
(iii)
(iv)
(v)
[JEE Mains online 2020]
(1) (v) < (i) < (iv) < (ii) < (iii)
(C) CH
3
NHCH
3
(1) (B) < (A) < (C)
(2) (A) < (B) < (C)
(2) (iii) < (i) < (ii) < (iv) < (v)
(3) (v) < (iii) < (ii) < (iv) < (i)
(3) (C) < (A) < (B)
(4) (B) < (C) < (A)
(4) (iii) < (iv) < (ii) < (i) < (v)
105. A chromatography column, packed with silica gel as
stationary phase, was used to separate a mixture of
compounds consisting of (A) benzanilide (B) aniline
and (C) acetophenone.When the column is eluted
with a mixture of solvents, hexane : ethyl acetate
(20 : 80), the sequence of obtained compounds is :
[JEE Mains online 2020]
(1) (B), (C) and (A) (2) (B), (A) and (C)
(3) (C), (A) and (B) (4) (A), (B) and (C)
109. The correct order of heat of combustion for follow-
ing alkadienes is : [JEE Mains online 2020]
(a) (b)
(c)
(1) (b) < (c) < (a) (2) (a) < (c) < (b)
N
(3) (c) < (b) < (a) (4) (a) < (b) < (c)
N
H
C
O
O
N
NO
2
C C
O H
c
N
110. The number of chiral carbons present in the molecule
given below is _ . [2020]
114. The decreasing order of reactivity of the following
organic molecules towards AgNO
3
solution is :
[2020]
H
3
C
H
CH
3
Cl
(A)
Cl
OMe
111. Arrange the following labelled hydrogens in
decreasing order of acidity : [2020]
CH
3
CHCH
3
Cl
(C)
CH
3
CHCH
2
NO
2
Cl
(D)
a
d
H O
COO H
b
(1) (A) > (B) > (D) > (C)
(2) (A) > (B) > (C) > (D)
(3) (C) > (D) > (A) > (B)
(4) (B) > (A) > (C) > (D)
115. Which of the following compounds will form the
precipitate with aq. AgNO
3
solution most readily?
(1) b > c > d > a (2) c > b > a > d
(3) b > a > c > d (4) c > b > d > a
112. Which one of the following compounds possesses
the most acidic hydrogen ? [2020]
(1)
Br
(2)
[2020]
Br
N
N
C
C N
(1)
(2) H C C C H
Br
H H
O
(3)
3
(4)
MeO
O
O
H
OMe
(3)
Br
(4)
OCH
3
H
3
C
CH
3
O
OMe
113. Consider the following molecules and statements
related to them : [2020]
116. Among the following compo unds, which one has
the shortest CCl bond ? [2020]
(A)
O
H
H
O
H
C
O
H
(B)
O
C
O
O
(1) H
3
C Cl (2)
H
3
C
H
3
C
Cl
H
3
C
(a) B is more likely to be crystalline than A.
(b) B has higher boiling point than A.
(c) B dissolves more readily than A in water.
Identify the correct option from below :
(1) only (a) is true (2) (a) and (c) are true
(3) (b) and (c) are true
(4) (a) and (b) are true
(3)
Cl
CH
CH
2
(4)
HC
Cl
CH
2
H
(B)
O
N
(B)
B
OH
117. The increasing order of the acidity of the -hydrogen
of the following compounds is [2020]
O O
O O O
(A)
Ph
Ph
O
(C)
OMe
O
(D)
NMe
2
(1)
OH
(2)
CH
3
HO
CH
3
(1) (C) < (A) < (B) < (D)
(2) (B) < (C) < (A) < (D)
(3) (A) < (C) < (D) < (B)
(4) (D) < (C) < (A) < (B)
118. The increasing order of basicity of the following
compounds is [2020]
(3)
OH
CH
3
HO
(4)
OH
CH
3
H
(A) (B)
H
(C)
H
(D)
121. There are two compounds A and B of molecular
formula C
9
H
18
O
3
. A has higher boiling point than
B. What are the possible structures of A and B?
[2020]
CH
3
O
OH
HO
OH
(1) (A) < (B) < (C) < (D)
(2) (B) < (A) < (C) < (D)
(3) (D) < (A) < (B) < (C)
(4) (B) < (A) < (D) < (C)
119. The increasing order of boiling points of the following
compounds is : [2020]
(1)
(2)
A
B
OCH
3
HO
OH
CH
3
O
A
B
OH
OH
OCH
3
OCH
3
OH
CH
3
I
OH
NO
2
II
OH
NH
2
III
OH
OCH
3
IV
(3)
CH
3
O
A
HO
OCH
3
HO
OH
OCH
3
OCH
3
HO
OH
(1) I < IV < III < II (2) IV < I < II < III
(3) I < III < IV < II (4) III < I < II < IV
(4)
A
OCH
3
B
OH
120. The major product of the following reactions is
[2020]
O
122. Arrange the order of C OH bond length of the
following compounds. [2020]
Methanol Phenol p-Ethoxyphenol
(a) (b) (c)
(1) a > b > c (2) a > c > b
(3) c > b > a (4) b > c > a
H
3
O
CH
3
123. Which of the following has the shortest C-Cl bond?
(1) ClCH=CHOCH
3
[2020]
(2) C1CH=CHCH
3
(3) C1CH=CH
2
(4) C1CH=CHNO
2
124. The decreasing order of basicity of the following
amines is : [2020]
126. The increasing order of pK
b
for the following
compounds will be : [2020]
N
A.
N NH
B. CH
3
NHCH
3
NH
2
(I)
(II)
(III)
NH
2
N
(IV)
C. NH
2
CH = NH
(1) A > B > C (2) B > A > C
(3) C > B > A (4) B > C > A
127. Stability order of following alkoxide ions is [2020]
(1) (I) > (III) > (IV) > (II)
(2) (III) > (I) > (II) > (IV)
(3) (III) > (II) > (I) > (IV)
NO
2
O
NO
2
O
O
2
N
O
(4) (II) > (III) > (IV) > (I)
125. The increasing order of basicity for the following
intermediates is (from weak to strong) [2020]
CH
3
(a) (b) (c)
(1) c > b > a (2) a > c > b
(3) b > a > c (4) c > a > b
(i)
H
3
C
C
CH
3
(ii)
H
2
C
CH
CH
2
(iii) (iii)

HC C
(iv)

CH
3
(v)
CN
(1) (v) < (i) < (iv) < (ii) < (iii)
(2) (iii) < (i) < (ii) < (iv) < (v)
(3) (v) < (iii) < (ii) < (iv) < (i)
(4) (iii) < (iv) < (ii) < (i) < (v)
N