Chemistry - 2024 Past Year Paper | IIT JAM Chemistry Past Year Papers PDF Download

 Page 1


JAM 2024  CHEMISTRY (CY) 
  
Section A: Q.1 – Q.10 Carry ONE mark each (Multiple Choice Questions) 
 
 
Q.1 The following dipeptide derivative is used as an artificial sweetener: 
H
N
OCH
3
O
NH
2
HO
2
C
O
 
The constituent ?-amino acids of this dipeptide are 
(A) phenylalanine and glutamic acid. 
(B) phenylalanine and aspartic acid. 
(C) tyrosine and aspartic acid. 
(D) tyrosine and glutamic acid. 
  
  
 
 
 
 
 
Page 2


JAM 2024  CHEMISTRY (CY) 
  
Section A: Q.1 – Q.10 Carry ONE mark each (Multiple Choice Questions) 
 
 
Q.1 The following dipeptide derivative is used as an artificial sweetener: 
H
N
OCH
3
O
NH
2
HO
2
C
O
 
The constituent ?-amino acids of this dipeptide are 
(A) phenylalanine and glutamic acid. 
(B) phenylalanine and aspartic acid. 
(C) tyrosine and aspartic acid. 
(D) tyrosine and glutamic acid. 
  
  
 
 
 
 
 
JAM 2024  CHEMISTRY (CY) 
  
Q.2 The suitable reagent combination for the following transformation 
Me
Me
O
OH
Me
O
 
is  
(A) (i) meta-chloroperbenzoic acid (m-CPBA); (ii) NaOH; (iii) aq. HCl 
(B) (i) OsO4; (ii) aq. HCl 
(C) (i) I2/NaOH; (ii) aq. HCl 
(D) (i) dimethyldioxirane (DMDO); (ii) aq. HCl 
  
  
 
 
 
 
 
 
 
Page 3


JAM 2024  CHEMISTRY (CY) 
  
Section A: Q.1 – Q.10 Carry ONE mark each (Multiple Choice Questions) 
 
 
Q.1 The following dipeptide derivative is used as an artificial sweetener: 
H
N
OCH
3
O
NH
2
HO
2
C
O
 
The constituent ?-amino acids of this dipeptide are 
(A) phenylalanine and glutamic acid. 
(B) phenylalanine and aspartic acid. 
(C) tyrosine and aspartic acid. 
(D) tyrosine and glutamic acid. 
  
  
 
 
 
 
 
JAM 2024  CHEMISTRY (CY) 
  
Q.2 The suitable reagent combination for the following transformation 
Me
Me
O
OH
Me
O
 
is  
(A) (i) meta-chloroperbenzoic acid (m-CPBA); (ii) NaOH; (iii) aq. HCl 
(B) (i) OsO4; (ii) aq. HCl 
(C) (i) I2/NaOH; (ii) aq. HCl 
(D) (i) dimethyldioxirane (DMDO); (ii) aq. HCl 
  
  
 
 
 
 
 
 
 
JAM 2024  CHEMISTRY (CY) 
  
Q.3 For the reaction  
Ph Br
Me Me
Ph CN
Me Me
+ KCN
MeOH/H
2
O
 
if the concentration of KCN is increased four times, then the rate of the reaction 
would be 
(A) unaffected. 
(B) increased by two times. 
(C) decreased by four times. 
(D) increased by four times. 
  
  
 
 
 
 
 
 
 
Page 4


JAM 2024  CHEMISTRY (CY) 
  
Section A: Q.1 – Q.10 Carry ONE mark each (Multiple Choice Questions) 
 
 
Q.1 The following dipeptide derivative is used as an artificial sweetener: 
H
N
OCH
3
O
NH
2
HO
2
C
O
 
The constituent ?-amino acids of this dipeptide are 
(A) phenylalanine and glutamic acid. 
(B) phenylalanine and aspartic acid. 
(C) tyrosine and aspartic acid. 
(D) tyrosine and glutamic acid. 
  
  
 
 
 
 
 
JAM 2024  CHEMISTRY (CY) 
  
Q.2 The suitable reagent combination for the following transformation 
Me
Me
O
OH
Me
O
 
is  
(A) (i) meta-chloroperbenzoic acid (m-CPBA); (ii) NaOH; (iii) aq. HCl 
(B) (i) OsO4; (ii) aq. HCl 
(C) (i) I2/NaOH; (ii) aq. HCl 
(D) (i) dimethyldioxirane (DMDO); (ii) aq. HCl 
  
  
 
 
 
 
 
 
 
JAM 2024  CHEMISTRY (CY) 
  
Q.3 For the reaction  
Ph Br
Me Me
Ph CN
Me Me
+ KCN
MeOH/H
2
O
 
if the concentration of KCN is increased four times, then the rate of the reaction 
would be 
(A) unaffected. 
(B) increased by two times. 
(C) decreased by four times. 
(D) increased by four times. 
  
  
 
 
 
 
 
 
 
JAM 2024  CHEMISTRY (CY) 
  
Q.4 Consider the wavefunction ?? (?? ) = ?? [exp(?????? ) + exp(-?????? )]. The complex 
conjugate ?? *
(?? ) is  
[Given: ?? is the normalization constant;  ?? = v-1]  
(A) ?? [exp(-?????? ) - exp(?????? )] 
(B) ?? *
[exp(-?????? ) - exp(?????? )] 
(C) ?? *
[exp(?????? ) + exp(-?????? )] 
(D) 2?? [sin(???? )] 
  
  
 
 
 
 
 
 
 
 
 
Page 5


JAM 2024  CHEMISTRY (CY) 
  
Section A: Q.1 – Q.10 Carry ONE mark each (Multiple Choice Questions) 
 
 
Q.1 The following dipeptide derivative is used as an artificial sweetener: 
H
N
OCH
3
O
NH
2
HO
2
C
O
 
The constituent ?-amino acids of this dipeptide are 
(A) phenylalanine and glutamic acid. 
(B) phenylalanine and aspartic acid. 
(C) tyrosine and aspartic acid. 
(D) tyrosine and glutamic acid. 
  
  
 
 
 
 
 
JAM 2024  CHEMISTRY (CY) 
  
Q.2 The suitable reagent combination for the following transformation 
Me
Me
O
OH
Me
O
 
is  
(A) (i) meta-chloroperbenzoic acid (m-CPBA); (ii) NaOH; (iii) aq. HCl 
(B) (i) OsO4; (ii) aq. HCl 
(C) (i) I2/NaOH; (ii) aq. HCl 
(D) (i) dimethyldioxirane (DMDO); (ii) aq. HCl 
  
  
 
 
 
 
 
 
 
JAM 2024  CHEMISTRY (CY) 
  
Q.3 For the reaction  
Ph Br
Me Me
Ph CN
Me Me
+ KCN
MeOH/H
2
O
 
if the concentration of KCN is increased four times, then the rate of the reaction 
would be 
(A) unaffected. 
(B) increased by two times. 
(C) decreased by four times. 
(D) increased by four times. 
  
  
 
 
 
 
 
 
 
JAM 2024  CHEMISTRY (CY) 
  
Q.4 Consider the wavefunction ?? (?? ) = ?? [exp(?????? ) + exp(-?????? )]. The complex 
conjugate ?? *
(?? ) is  
[Given: ?? is the normalization constant;  ?? = v-1]  
(A) ?? [exp(-?????? ) - exp(?????? )] 
(B) ?? *
[exp(-?????? ) - exp(?????? )] 
(C) ?? *
[exp(?????? ) + exp(-?????? )] 
(D) 2?? [sin(???? )] 
  
  
 
 
 
 
 
 
 
 
 
JAM 2024  CHEMISTRY (CY) 
  
Q.5 
Wavelength of X-rays used in a diffraction experiment is 1.54 Å. X-rays are 
diffracted from a set of planes with an interplanar spacing of 1.54 Å. Then the 
angle ? (in degrees) corresponding to the first-order Bragg diffraction is 
(A) 30º 
(B) 15º 
(C) 45º 
(D) 90º