by DeepWebLabs
IIT-JAM-CY SERIES
Chemistry

Organic Chemistry

39 previous year questions.

Volume: 39 Ques
Yield: High

High-Yield Trend

13
2025
16
2021
10
2017

Chapter Questions
39 MCQs

01
PYQ 2017
medium
chemistry ID: iit-jam-
In the following Latimer diagram, the species that undergoes disproportionation reaction is
1
MnO
2
MnO
3
Mn O
4
Mn(OH)
02
PYQ 2017
medium
chemistry ID: iit-jam-

In the following reactions, the major products E and F, respectively, are

1
A
2
B
3
C
4
D
03
PYQ 2017
medium
chemistry ID: iit-jam-

The following conversion is carried out using

1
hydroboration–oxidation followed by Jones oxidation
2
Wacker oxidation followed by haloform reaction
3
oxymercuration–demercuration followed by Jones oxidation
4
ozonolysis followed by haloform reaction
04
PYQ 2017
medium
chemistry ID: iit-jam-

In a typical conductometric titration of a strong acid with a weak base, the curve resembles
(Conductance vs volume of base graphs as shown in the question)

1
A
2
B
3
C
4
D
05
PYQ 2017
medium
chemistry ID: iit-jam-

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

1
61
2
85
3
74
4
68
06
PYQ 2017
medium
chemistry ID: iit-jam-

The correct order of rate of solvolysis for the following compounds is

1
III>II>I
2
II>I>III
3
III>I>II
4
II>III>I
07
PYQ 2017
medium
chemistry ID: iit-jam-
The amount of bromine (atomic wt. = 80) required (in gram) for the estimation of 42.3 g of phenol (molecular wt. = 94 g mol ) is .............
08
PYQ 2017
medium
chemistry ID: iit-jam-
For a first order reaction , the rate constant in terms of initial pressure and pressure at time ( ), is given by
1

2

3

4

09
PYQ 2017
medium
chemistry ID: iit-jam-
The homogeneous catalyst used in water-gas shift reaction is
1
PdCl
2
Cr O
3
[RhCl(PPh ) ]
4
[RuCl (bipyridyl) ]
10
PYQ 2017
medium
chemistry ID: iit-jam-
The number of degrees of freedom of liquid water in equilibrium with ice is
1
0
2
1
3
2
4
3
11
PYQ 2021
medium
chemistry ID: iit-jam-

The major product formed in the following reaction is

1
A
2
B
3
C
4
D
12
PYQ 2021
medium
chemistry ID: iit-jam-

The reaction that produces the following as a major product is

1
A
2
B
3
C
4
D
13
PYQ 2021
medium
chemistry ID: iit-jam-

The products P, Q, R and S formed in the following reactions are

1
A
2
B
3
C
4
D
14
PYQ 2021
medium
chemistry ID: iit-jam-

The major product formed in the following reaction sequence is

1
A
2
B
3
C
4
D
15
PYQ 2021
medium
chemistry ID: iit-jam-

The CORRECT combination for metalloenzymes given in Column I with their catalytic reactions in Column II is

1
(i)–(M); (ii)–(N); (iii)–(K); (iv)–(L)
2
(i)–(N); (ii)–(L); (iii)–(K); (iv)–(M)
3
(i)–(N); (ii)–(K); (iii)–(L); (iv)–(M)
4
(i)–(M); (ii)–(K); (iii)–(L); (iv)–(N)
16
PYQ 2021
medium
chemistry ID: iit-jam-

The major product formed in the following reaction is

1
A
2
B
3
C
4
D
17
PYQ 2021
medium
chemistry ID: iit-jam-

The major product formed in the following reaction is

1
A
2
B
3
C
4
D
18
PYQ 2021
medium
chemistry ID: iit-jam-

The major product formed in the following reaction is

1
A
2
B
3
C
4
D
19
PYQ 2021
medium
chemistry ID: iit-jam-
The surface tension ( ) of a solution, prepared by mixing 0.02 mol of an organic acid in 1 L of pure water, is represented as where is the surface tension of pure water, , , and is concentration in mol L . The excess concentration of the organic acid at the surface of the liquid, determined by Gibbs adsorption equation at 300 K, is . The value of (rounded off to two decimal places) is ________.
20
PYQ 2021
medium
chemistry ID: iit-jam-

The products P and Q formed in the reaction are

1
A
2
B
3
C
4
D
21
PYQ 2021
medium
chemistry ID: iit-jam-

The compound(s), which give(s) benzoic acid on oxidation with KMnO , is (are)

1
A
2
B
3
C
4
D
22
PYQ 2021
medium
chemistry ID: iit-jam-

In the following reaction, compound Q is

1
A
2
B
3
C
4
D
23
PYQ 2021
medium
chemistry ID: iit-jam-

The major product formed in the following reaction is

1
A
2
B
3
C
4
D
24
PYQ 2021
medium
chemistry ID: iit-jam-
The pigment responsible for red color in tomato has one functional group. The CORRECT statement(s) about this functional group is (are)
1
It decolorizes bromine water
2
It gives hydrazone derivative on reaction with 2,4-dinitrophenylhydrazine
3
It gets cleaved on reaction with ozone
4
It gives positive silver mirror test
25
PYQ 2021
medium
chemistry ID: iit-jam-
Hantzsch pyridine synthesis involves several steps. Some of those are
1
Aldol reaction
2
Darzens reaction
3
Mannich reaction
4
Michael addition
26
PYQ 2021
medium
chemistry ID: iit-jam-
Reaction of BCl with NH Cl at 140 °C produces compound P. Further, P reacts with NaBH to give a colorless liquid Q. The reaction of Q with H O at 100 °C produces compound R and a diatomic gas S. Among the following, the CORRECT statement is
1
P is B N H
2
R is [B(OH)NH]
3
Q is [BCINH]
4
S is Cl
27
PYQ 2025
medium
chemistry ID: iit-jam-

Number of NMR signals observed for the following compound is .............

28
PYQ 2025
medium
chemistry ID: iit-jam-

The product(s) in the following transformation is(are)

29
PYQ 2025
medium
chemistry ID: iit-jam-

The major products P and Q of the following reactions are

30
PYQ 2025
medium
chemistry ID: iit-jam-

The major product in the following reaction sequence is

31
PYQ 2025
medium
chemistry ID: iit-jam-

Pericyclic reactions involved in the synthesis of Vitamin D from Ergosterol are

1
6 electrocyclic ring opening followed by [1,7] sigmatropic shift
2
[1,5] sigmatropic shift followed by 6 electrocyclic ring opening
3
[3,3] sigmatropic rearrangement followed by [1,7] sigmatropic shift
4
4 electrocyclization followed by 6 electrocyclic ring opening
32
PYQ 2025
medium
chemistry ID: iit-jam-

The correct order of the rate of mononitration using conc. H SO /conc. HNO at room temperature is

33
PYQ 2025
medium
chemistry ID: iit-jam-

The major products P and Q of the following transformations are

34
PYQ 2025
medium
chemistry ID: iit-jam-

The major product of the following transformation is

35
PYQ 2025
medium
chemistry ID: iit-jam-

The molecular structure of table sugar is

36
PYQ 2025
medium
chemistry ID: iit-jam-
The reaction(s) that will yield cyclic product is(are)
1
(E)-2-hexene with CH I /Zn-Cu
2
2-butanone with ethyl 2-chloropropionate with NaOEt/EtOH
3
hexane-2,5-dione with ammonia
4
cyclohexane-1,2-diol with NaIO
37
PYQ 2025
medium
chemistry ID: iit-jam-
The set(s), in which all the compounds yield achiral products upon treatment with CH MgBr followed by hydrolysis with dilute mineral acid, is(are)
1
3,4-epoxyhexane, cyclohexanone, and butanone
2
ethyl propionate, phenylacetyl chloride, and cyclohexanone
3
butanone, ethyl propionate, and cyclohexanone
4
ethyl phenyl ketone, 3,4-epoxyhexane, and phenylacetyl chloride
38
PYQ 2025
medium
chemistry ID: iit-jam-
An organic compound P (C H ) produces a meso compound upon oxidation with OsO /NMO. The compound P is
1
(E)-4-octene
2
(Z)-4-octene
3
(E)-3-octene
4
(Z)-3-octene
39
PYQ 2025
medium
chemistry ID: iit-jam-
The product formed when (R)-2-bromopropionic acid is treated with low concentration of hydroxide ion is
1
predominantly of S configuration
2
predominantly of R configuration
3
a racemic mixture
4
achiral