Page 1
JAM 2021 CHEMISTRY - CY
CY 1/21
Paper Specific Instructions
1. The examination is of 3 hours duration. There are a total of 60 questions carrying 100 marks. The entire
paper is divided into three sections, A, B and C. All sections are compulsory. Questions in each section are
of different types.
2. Section – A contains a total of 30 Multiple Choice Questions (MCQ). Each MCQ type question has four
choices out of which only one choice is the correct answer. Questions Q.1 – Q.30 belong to this section
and carry a total of 50 marks. Q.1 – Q.10 carry 1 mark each and Questions Q.11 – Q.30 carry 2 marks
each.
3. Section – B contains a total of 10 Multiple Select Questions (MSQ). Each MSQ type question is similar
to MCQ but with a difference that there may be one or more than one choice(s) that are correct out of the
four given choices. The candidate gets full credit if he/she selects all the correct answers only and no
wrong answers. Questions Q.31 – Q.40 belong to this section and carry 2 marks each with a total of 20
marks.
4. Section – C contains a total of 20 Numerical Answer Type (NAT) questions. For these NAT type
questions, the answer is a real number which needs to be entered using the virtual keyboard on the monitor.
No choices will be shown for these type of questions. Questions Q.41 – Q.60 belong to this section and
carry a total of 30 marks. Q.41 – Q.50 carry 1 mark each and Questions Q.51 – Q.60 carry 2 marks each.
5. In all sections, questions not attempted will result in zero mark. In Section – A (MCQ), wrong answer will
result in NEGATIVE marks. For all 1 mark questions, 1/3 marks will be deducted for each wrong answer.
For all 2 marks questions, 2/3 marks will be deducted for each wrong answer. In Section – B (MSQ), there
is NO NEGATIVE and NO PARTIAL marking provisions. There is NO NEGATIVE marking in
Section – C (NAT) as well.
6. Only Virtual Scientific Calculator is allowed. Charts, graph sheets, tables, cellular phone or other
electronic gadgets are NOT allowed in the examination hall.
7. The Scribble Pad will be provided for rough work.
Page 2
JAM 2021 CHEMISTRY - CY
CY 1/21
Paper Specific Instructions
1. The examination is of 3 hours duration. There are a total of 60 questions carrying 100 marks. The entire
paper is divided into three sections, A, B and C. All sections are compulsory. Questions in each section are
of different types.
2. Section – A contains a total of 30 Multiple Choice Questions (MCQ). Each MCQ type question has four
choices out of which only one choice is the correct answer. Questions Q.1 – Q.30 belong to this section
and carry a total of 50 marks. Q.1 – Q.10 carry 1 mark each and Questions Q.11 – Q.30 carry 2 marks
each.
3. Section – B contains a total of 10 Multiple Select Questions (MSQ). Each MSQ type question is similar
to MCQ but with a difference that there may be one or more than one choice(s) that are correct out of the
four given choices. The candidate gets full credit if he/she selects all the correct answers only and no
wrong answers. Questions Q.31 – Q.40 belong to this section and carry 2 marks each with a total of 20
marks.
4. Section – C contains a total of 20 Numerical Answer Type (NAT) questions. For these NAT type
questions, the answer is a real number which needs to be entered using the virtual keyboard on the monitor.
No choices will be shown for these type of questions. Questions Q.41 – Q.60 belong to this section and
carry a total of 30 marks. Q.41 – Q.50 carry 1 mark each and Questions Q.51 – Q.60 carry 2 marks each.
5. In all sections, questions not attempted will result in zero mark. In Section – A (MCQ), wrong answer will
result in NEGATIVE marks. For all 1 mark questions, 1/3 marks will be deducted for each wrong answer.
For all 2 marks questions, 2/3 marks will be deducted for each wrong answer. In Section – B (MSQ), there
is NO NEGATIVE and NO PARTIAL marking provisions. There is NO NEGATIVE marking in
Section – C (NAT) as well.
6. Only Virtual Scientific Calculator is allowed. Charts, graph sheets, tables, cellular phone or other
electronic gadgets are NOT allowed in the examination hall.
7. The Scribble Pad will be provided for rough work.
JAM 2021 CHEMISTRY - CY
CY 2/21
SECTION – A
MULTIPLE CHOICE QUESTIONS (MCQ)
Q. 1 – Q.10 carry one mark each.
Q.1 The CORRECT order of pKa for the compounds I to IV in water at 298 K is
(A) I > II > III > IV (B) IV > III > II > I
(C) IV > II > III > I (D) I > III > II > IV
Q.2 For Na
+
, Mg
2+
, Al
3+
and F
-
, the CORRECT order of ionic radii is
(A) Al
3+
> Mg
2+
> Na
+
> F
-
(B) Al
3+
> Na
+
> Mg
2+
> F
-
(C) F
-
> Na
+
> Mg
2+
> Al
3+
(D) Na
+
> F
-
> Mg
2+
> Al
3+
Q.3 Spin-only magnetic moments (in BM) of [NiCl 2(PPh3)2] and [Mn(NCS)6]
4 -
, respectively,
are
(A) 0.00 and 5.92 (B) 2.83 and 1.89
(C) 0.00 and 1.89 (D) 2.83 and 5.92
Q.4 Two sets of quantum numbers with the same number of radial nodes are
(A) n = 3; l = 0; m l = 0 and n = 2; l = 0; m l = 0
(B) n = 3; l = 1; m l = 1 and n = 2; l = 1; m l = 0
(C) n = 3; l = 2; m l = 0 and n = 2; l = 1; m l = 0
(D) n = 3; l = 1; m l = -1 and n = 2; l = 1; m l = 0
Page 3
JAM 2021 CHEMISTRY - CY
CY 1/21
Paper Specific Instructions
1. The examination is of 3 hours duration. There are a total of 60 questions carrying 100 marks. The entire
paper is divided into three sections, A, B and C. All sections are compulsory. Questions in each section are
of different types.
2. Section – A contains a total of 30 Multiple Choice Questions (MCQ). Each MCQ type question has four
choices out of which only one choice is the correct answer. Questions Q.1 – Q.30 belong to this section
and carry a total of 50 marks. Q.1 – Q.10 carry 1 mark each and Questions Q.11 – Q.30 carry 2 marks
each.
3. Section – B contains a total of 10 Multiple Select Questions (MSQ). Each MSQ type question is similar
to MCQ but with a difference that there may be one or more than one choice(s) that are correct out of the
four given choices. The candidate gets full credit if he/she selects all the correct answers only and no
wrong answers. Questions Q.31 – Q.40 belong to this section and carry 2 marks each with a total of 20
marks.
4. Section – C contains a total of 20 Numerical Answer Type (NAT) questions. For these NAT type
questions, the answer is a real number which needs to be entered using the virtual keyboard on the monitor.
No choices will be shown for these type of questions. Questions Q.41 – Q.60 belong to this section and
carry a total of 30 marks. Q.41 – Q.50 carry 1 mark each and Questions Q.51 – Q.60 carry 2 marks each.
5. In all sections, questions not attempted will result in zero mark. In Section – A (MCQ), wrong answer will
result in NEGATIVE marks. For all 1 mark questions, 1/3 marks will be deducted for each wrong answer.
For all 2 marks questions, 2/3 marks will be deducted for each wrong answer. In Section – B (MSQ), there
is NO NEGATIVE and NO PARTIAL marking provisions. There is NO NEGATIVE marking in
Section – C (NAT) as well.
6. Only Virtual Scientific Calculator is allowed. Charts, graph sheets, tables, cellular phone or other
electronic gadgets are NOT allowed in the examination hall.
7. The Scribble Pad will be provided for rough work.
JAM 2021 CHEMISTRY - CY
CY 2/21
SECTION – A
MULTIPLE CHOICE QUESTIONS (MCQ)
Q. 1 – Q.10 carry one mark each.
Q.1 The CORRECT order of pKa for the compounds I to IV in water at 298 K is
(A) I > II > III > IV (B) IV > III > II > I
(C) IV > II > III > I (D) I > III > II > IV
Q.2 For Na
+
, Mg
2+
, Al
3+
and F
-
, the CORRECT order of ionic radii is
(A) Al
3+
> Mg
2+
> Na
+
> F
-
(B) Al
3+
> Na
+
> Mg
2+
> F
-
(C) F
-
> Na
+
> Mg
2+
> Al
3+
(D) Na
+
> F
-
> Mg
2+
> Al
3+
Q.3 Spin-only magnetic moments (in BM) of [NiCl 2(PPh3)2] and [Mn(NCS)6]
4 -
, respectively,
are
(A) 0.00 and 5.92 (B) 2.83 and 1.89
(C) 0.00 and 1.89 (D) 2.83 and 5.92
Q.4 Two sets of quantum numbers with the same number of radial nodes are
(A) n = 3; l = 0; m l = 0 and n = 2; l = 0; m l = 0
(B) n = 3; l = 1; m l = 1 and n = 2; l = 1; m l = 0
(C) n = 3; l = 2; m l = 0 and n = 2; l = 1; m l = 0
(D) n = 3; l = 1; m l = -1 and n = 2; l = 1; m l = 0
JAM 2021 CHEMISTRY - CY
CY 3/21
Q.5 The major product formed in the following reaction is
(A)
(B)
(C)
(D)
Q.6 The major product formed in the following reaction is
(A)
(B)
(C)
(D)
Page 4
JAM 2021 CHEMISTRY - CY
CY 1/21
Paper Specific Instructions
1. The examination is of 3 hours duration. There are a total of 60 questions carrying 100 marks. The entire
paper is divided into three sections, A, B and C. All sections are compulsory. Questions in each section are
of different types.
2. Section – A contains a total of 30 Multiple Choice Questions (MCQ). Each MCQ type question has four
choices out of which only one choice is the correct answer. Questions Q.1 – Q.30 belong to this section
and carry a total of 50 marks. Q.1 – Q.10 carry 1 mark each and Questions Q.11 – Q.30 carry 2 marks
each.
3. Section – B contains a total of 10 Multiple Select Questions (MSQ). Each MSQ type question is similar
to MCQ but with a difference that there may be one or more than one choice(s) that are correct out of the
four given choices. The candidate gets full credit if he/she selects all the correct answers only and no
wrong answers. Questions Q.31 – Q.40 belong to this section and carry 2 marks each with a total of 20
marks.
4. Section – C contains a total of 20 Numerical Answer Type (NAT) questions. For these NAT type
questions, the answer is a real number which needs to be entered using the virtual keyboard on the monitor.
No choices will be shown for these type of questions. Questions Q.41 – Q.60 belong to this section and
carry a total of 30 marks. Q.41 – Q.50 carry 1 mark each and Questions Q.51 – Q.60 carry 2 marks each.
5. In all sections, questions not attempted will result in zero mark. In Section – A (MCQ), wrong answer will
result in NEGATIVE marks. For all 1 mark questions, 1/3 marks will be deducted for each wrong answer.
For all 2 marks questions, 2/3 marks will be deducted for each wrong answer. In Section – B (MSQ), there
is NO NEGATIVE and NO PARTIAL marking provisions. There is NO NEGATIVE marking in
Section – C (NAT) as well.
6. Only Virtual Scientific Calculator is allowed. Charts, graph sheets, tables, cellular phone or other
electronic gadgets are NOT allowed in the examination hall.
7. The Scribble Pad will be provided for rough work.
JAM 2021 CHEMISTRY - CY
CY 2/21
SECTION – A
MULTIPLE CHOICE QUESTIONS (MCQ)
Q. 1 – Q.10 carry one mark each.
Q.1 The CORRECT order of pKa for the compounds I to IV in water at 298 K is
(A) I > II > III > IV (B) IV > III > II > I
(C) IV > II > III > I (D) I > III > II > IV
Q.2 For Na
+
, Mg
2+
, Al
3+
and F
-
, the CORRECT order of ionic radii is
(A) Al
3+
> Mg
2+
> Na
+
> F
-
(B) Al
3+
> Na
+
> Mg
2+
> F
-
(C) F
-
> Na
+
> Mg
2+
> Al
3+
(D) Na
+
> F
-
> Mg
2+
> Al
3+
Q.3 Spin-only magnetic moments (in BM) of [NiCl 2(PPh3)2] and [Mn(NCS)6]
4 -
, respectively,
are
(A) 0.00 and 5.92 (B) 2.83 and 1.89
(C) 0.00 and 1.89 (D) 2.83 and 5.92
Q.4 Two sets of quantum numbers with the same number of radial nodes are
(A) n = 3; l = 0; m l = 0 and n = 2; l = 0; m l = 0
(B) n = 3; l = 1; m l = 1 and n = 2; l = 1; m l = 0
(C) n = 3; l = 2; m l = 0 and n = 2; l = 1; m l = 0
(D) n = 3; l = 1; m l = -1 and n = 2; l = 1; m l = 0
JAM 2021 CHEMISTRY - CY
CY 3/21
Q.5 The major product formed in the following reaction is
(A)
(B)
(C)
(D)
Q.6 The major product formed in the following reaction is
(A)
(B)
(C)
(D)
JAM 2021 CHEMISTRY - CY
CY 4/21
Q.7 A compound shows
1
H NMR peaks at d-values (in ppm) 7.31 (2H), 7.21 (2H), 4.5 (2H) and
2.3 (3H). The structure of the compound is
(A)
(B)
(C)
(D)
Q.8 The major product formed in the following reaction is
(A)
(B)
(C)
(D)
Page 5
JAM 2021 CHEMISTRY - CY
CY 1/21
Paper Specific Instructions
1. The examination is of 3 hours duration. There are a total of 60 questions carrying 100 marks. The entire
paper is divided into three sections, A, B and C. All sections are compulsory. Questions in each section are
of different types.
2. Section – A contains a total of 30 Multiple Choice Questions (MCQ). Each MCQ type question has four
choices out of which only one choice is the correct answer. Questions Q.1 – Q.30 belong to this section
and carry a total of 50 marks. Q.1 – Q.10 carry 1 mark each and Questions Q.11 – Q.30 carry 2 marks
each.
3. Section – B contains a total of 10 Multiple Select Questions (MSQ). Each MSQ type question is similar
to MCQ but with a difference that there may be one or more than one choice(s) that are correct out of the
four given choices. The candidate gets full credit if he/she selects all the correct answers only and no
wrong answers. Questions Q.31 – Q.40 belong to this section and carry 2 marks each with a total of 20
marks.
4. Section – C contains a total of 20 Numerical Answer Type (NAT) questions. For these NAT type
questions, the answer is a real number which needs to be entered using the virtual keyboard on the monitor.
No choices will be shown for these type of questions. Questions Q.41 – Q.60 belong to this section and
carry a total of 30 marks. Q.41 – Q.50 carry 1 mark each and Questions Q.51 – Q.60 carry 2 marks each.
5. In all sections, questions not attempted will result in zero mark. In Section – A (MCQ), wrong answer will
result in NEGATIVE marks. For all 1 mark questions, 1/3 marks will be deducted for each wrong answer.
For all 2 marks questions, 2/3 marks will be deducted for each wrong answer. In Section – B (MSQ), there
is NO NEGATIVE and NO PARTIAL marking provisions. There is NO NEGATIVE marking in
Section – C (NAT) as well.
6. Only Virtual Scientific Calculator is allowed. Charts, graph sheets, tables, cellular phone or other
electronic gadgets are NOT allowed in the examination hall.
7. The Scribble Pad will be provided for rough work.
JAM 2021 CHEMISTRY - CY
CY 2/21
SECTION – A
MULTIPLE CHOICE QUESTIONS (MCQ)
Q. 1 – Q.10 carry one mark each.
Q.1 The CORRECT order of pKa for the compounds I to IV in water at 298 K is
(A) I > II > III > IV (B) IV > III > II > I
(C) IV > II > III > I (D) I > III > II > IV
Q.2 For Na
+
, Mg
2+
, Al
3+
and F
-
, the CORRECT order of ionic radii is
(A) Al
3+
> Mg
2+
> Na
+
> F
-
(B) Al
3+
> Na
+
> Mg
2+
> F
-
(C) F
-
> Na
+
> Mg
2+
> Al
3+
(D) Na
+
> F
-
> Mg
2+
> Al
3+
Q.3 Spin-only magnetic moments (in BM) of [NiCl 2(PPh3)2] and [Mn(NCS)6]
4 -
, respectively,
are
(A) 0.00 and 5.92 (B) 2.83 and 1.89
(C) 0.00 and 1.89 (D) 2.83 and 5.92
Q.4 Two sets of quantum numbers with the same number of radial nodes are
(A) n = 3; l = 0; m l = 0 and n = 2; l = 0; m l = 0
(B) n = 3; l = 1; m l = 1 and n = 2; l = 1; m l = 0
(C) n = 3; l = 2; m l = 0 and n = 2; l = 1; m l = 0
(D) n = 3; l = 1; m l = -1 and n = 2; l = 1; m l = 0
JAM 2021 CHEMISTRY - CY
CY 3/21
Q.5 The major product formed in the following reaction is
(A)
(B)
(C)
(D)
Q.6 The major product formed in the following reaction is
(A)
(B)
(C)
(D)
JAM 2021 CHEMISTRY - CY
CY 4/21
Q.7 A compound shows
1
H NMR peaks at d-values (in ppm) 7.31 (2H), 7.21 (2H), 4.5 (2H) and
2.3 (3H). The structure of the compound is
(A)
(B)
(C)
(D)
Q.8 The major product formed in the following reaction is
(A)
(B)
(C)
(D)
JAM 2021 CHEMISTRY - CY
CY 5/21
Q.9 A pure substance M has lesser density in solid state than in liquid state. The ?S fusion of M
is +25 J K
-1
mol
-1
. The CORRECT representative Pressure-Temperature diagram for the
fusion of M is
(A)
(B)
(C)
(D)
Q.10 Among the following, the matrices with non-zero determinant are
(A) P, Q and R
(B) P, R and S
(C) P, Q and S (D) Q, R and S
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