JEE Main 2022 Chemistry June 29 Shift 1 Paper & Solutions | Mock Tests for JEE Main and Advanced 2025 PDF Download

 Page 1


 
   
  
CHEMISTRY 
SECTION - A 
Multiple Choice Questions: This section contains 20 
multiple choice questions. Each question has 4 choices 
(1), (2), (3) and (4), out of which ONLY ONE is correct. 
Choose the correct answer : 
1. Production of iron in blast furnace follows the 
following equation 
 
3 4 2
Fe O (s) 4CO(g) 3Fe(l) 4CO (g) + ?? ? + 
 when 4.640 kg of Fe3O4 and 2.520 kg of CO are 
allowed to react then the amount of iron (in g) 
produced is: 
 [Given : Molar Atomic mass (g mol
–1
) : Fe = 56 
   Molar Atomic mass (g mol
–1
) : O = 16 
   Molar Atomic mass (g mol
–1
) : C = 12] 
 (A) 1400 
 (B) 2200   
 (C) 3360 
 (D) 4200 
Answer (C) 
Sol.  
3
3
3 4 2
60 mole 60 56 2.52 10
4.64
moles
3360g 10 moles
28
232
90 moles
20moles
90 80
0
Fe O (s) 4CO(g) 3Fe(l) 4CO (g)
=? ?
= ?
-
+ ? + 
2. Which of the following statements are correct? 
 (A) The electronic configuration of Cr is [Ar] 3d
5
4s
1
. 
 (B) The magnetic quantum number may have a 
negative value. 
 (C) In the ground state of an atom, the orbitals are 
filled in order of their increasing energies. 
 (D) The total number of nodes are given by n – 2. 
 Choose the most appropriate answer from the 
options given below : 
 (A) (A), (C) and (D) only 
 (B) (A) and (B) only 
 (C) (A) and (C) only 
 (D) (A), (B) and (C) only 
Answer (D) 
Sol. Cr = (Ar)3d
5
4s
1
 
 M = +l to –l 
 As per Aufbau principle, orbitals are filled in 
increasing order of energy. 
 Total number of nodes = (n – 1) 
3. Arrange the following in the decreasing order of 
their covalent character : 
 (A) LiCl 
 (B) NaCl 
 (C) KCl 
 (D) CsCl 
 Choose the most appropriate answer from the 
 options given below : 
 (A) (A) > (C) > (B) > (D) 
 (B) (B) > (A) > (C) > (D) 
 (C) (A) > (B) > (C) > (D) 
 (D) (A) > (B) > (D) > (C) 
Answer (C) 
Sol. Covalent character ? polarising power of cation 
 Correct decreasing order of covalent character 
  LiCl > NaCl > KCl > CsCl 
4. The solubility of AgCl will be maximum in which of 
the following? 
 (A) 0.01 M KCl 
 (B) 0.01 M HCl 
 (C) 0.01 M AgNO3 
 (D) Deionised water 
Answer (D) 
Sol. Solubility decreases with increasing the 
concentration of common ion. Therefore, the 
maximum solubility of AgCl will be in deionized 
water. 
5. Which of the following is a correct statement? 
 (A) Brownian motion destabilises sols. 
 (B) Any amount of dispersed phase can be added 
to emulsion without destabilising it. 
Page 2


 
   
  
CHEMISTRY 
SECTION - A 
Multiple Choice Questions: This section contains 20 
multiple choice questions. Each question has 4 choices 
(1), (2), (3) and (4), out of which ONLY ONE is correct. 
Choose the correct answer : 
1. Production of iron in blast furnace follows the 
following equation 
 
3 4 2
Fe O (s) 4CO(g) 3Fe(l) 4CO (g) + ?? ? + 
 when 4.640 kg of Fe3O4 and 2.520 kg of CO are 
allowed to react then the amount of iron (in g) 
produced is: 
 [Given : Molar Atomic mass (g mol
–1
) : Fe = 56 
   Molar Atomic mass (g mol
–1
) : O = 16 
   Molar Atomic mass (g mol
–1
) : C = 12] 
 (A) 1400 
 (B) 2200   
 (C) 3360 
 (D) 4200 
Answer (C) 
Sol.  
3
3
3 4 2
60 mole 60 56 2.52 10
4.64
moles
3360g 10 moles
28
232
90 moles
20moles
90 80
0
Fe O (s) 4CO(g) 3Fe(l) 4CO (g)
=? ?
= ?
-
+ ? + 
2. Which of the following statements are correct? 
 (A) The electronic configuration of Cr is [Ar] 3d
5
4s
1
. 
 (B) The magnetic quantum number may have a 
negative value. 
 (C) In the ground state of an atom, the orbitals are 
filled in order of their increasing energies. 
 (D) The total number of nodes are given by n – 2. 
 Choose the most appropriate answer from the 
options given below : 
 (A) (A), (C) and (D) only 
 (B) (A) and (B) only 
 (C) (A) and (C) only 
 (D) (A), (B) and (C) only 
Answer (D) 
Sol. Cr = (Ar)3d
5
4s
1
 
 M = +l to –l 
 As per Aufbau principle, orbitals are filled in 
increasing order of energy. 
 Total number of nodes = (n – 1) 
3. Arrange the following in the decreasing order of 
their covalent character : 
 (A) LiCl 
 (B) NaCl 
 (C) KCl 
 (D) CsCl 
 Choose the most appropriate answer from the 
 options given below : 
 (A) (A) > (C) > (B) > (D) 
 (B) (B) > (A) > (C) > (D) 
 (C) (A) > (B) > (C) > (D) 
 (D) (A) > (B) > (D) > (C) 
Answer (C) 
Sol. Covalent character ? polarising power of cation 
 Correct decreasing order of covalent character 
  LiCl > NaCl > KCl > CsCl 
4. The solubility of AgCl will be maximum in which of 
the following? 
 (A) 0.01 M KCl 
 (B) 0.01 M HCl 
 (C) 0.01 M AgNO3 
 (D) Deionised water 
Answer (D) 
Sol. Solubility decreases with increasing the 
concentration of common ion. Therefore, the 
maximum solubility of AgCl will be in deionized 
water. 
5. Which of the following is a correct statement? 
 (A) Brownian motion destabilises sols. 
 (B) Any amount of dispersed phase can be added 
to emulsion without destabilising it. 
 
   
  
 (C) Mixing two oppositely charged sols in equal 
amount neutralises charges and stabilises 
colloids. 
 (D) Presence of equal and similar charges on 
colloidal particles provides stability to the 
colloidal solution. 
Answer (D) 
Sol. Presence of equal and similar charges on colloidal 
particle provides stability to the colloidal solution. 
6. The electronic configuration of Pt(atomic number 
78) is: 
 (A) [Xe] 4f
14
 5d
9
 6s
1
 
 (B) [Kr] 4f
14
 5d
10
  
 (C) [Xe] 4f
14
 5d
10
 
 (D) [Xe] 4f
14
 5d
8 
6s
2
 
Answer (A) 
Sol. Pt = [Xe] 4f
14
 5d
9
 6s
1
 
7. In isolation of which one of the following metals 
from their ores, the use of cyanide salt is not 
commonly involved? 
 (A) Zinc (B) Gold 
 (C) Silver (D) Copper 
Answer (D) 
Sol. In the extraction of Silver and Gold, NaCN is used 
to leach the metal. 
 ( ) ( ) ( )
22
4Au s 8CN aq 2H O O g + + + ? 
 ( ) ( ) ( )
–
–
2
4 Au CN aq 4OH aq ?? +
??
 
– 2–
24
2[Au(CN) ] (aq) Zn 2Au(s) [(Zn(CN) )] (aq) + ? + 
 In case of ore containing ZnS and PbS, the 
depressant used is NaCN. 
8. Which one of following reactions indicates the 
reducing ability of hydrogen peroxide in basic 
medium? 
 (A) HOCI + H2O2 ? H3O
+ 
+ CI
– 
+ O2 
 (B) PbS + 4H2O2 ? PbSO4 + 4H2O  
 
(C)
  
–
4 2 2 2 2
–
2
2MnO 3H O 2MnO 3O
2H O 2OH
+ ? +
++
 
 (D) 
2+ 4+ –
22
Mn H O Mn 2OH + ? + 
Answer (C) 
Sol. 
7
–
4 2 2
2MnO 3H O
+
+? 
 
4
2 2 2
2MnO 3O 2H O 2OH
+
+ + + 
 In basic medium 
4
MnO
-
 is reduced to MnO2, 
whereas in acidic medium it is reduced to Mn
+2
. 
9. Match List-I with List-II. 
  List-I  List-II 
  (Metal)  (Emitted light  
    wavelength (nm)) 
 (A) Li (I) 670.8 
 (B) Na (II) 589.2 
 (C) Rb (III) 780.0 
 (D) Cs (IV) 455.5 
 Choose the most appropriate answer from the 
options given below: 
 (A) (A)-(I), (B)-(II), (C)-(III), (D)-(IV) 
 (B) (A)-(III), (B)-(II), (C)-(I), (D)-(IV) 
 (C) (A)-(III), (B)-(I), (C)-(II), (D)-(IV) 
 (D) (A)-(IV), (B)-(II), (C)-(I), (D)-(III) 
Answer (A) 
Sol.  
 
10. Match List-I with List-II. 
 List-I List-II 
 (Metal) (Application)  
 (A) Cs (I) High temperature 
    thermometer 
 (B) Ga (II) Water repellent  
    sprays 
 (C) B (III) Photoelectric cells  
 (D) Si (IV) Bullet proof vest 
Page 3


 
   
  
CHEMISTRY 
SECTION - A 
Multiple Choice Questions: This section contains 20 
multiple choice questions. Each question has 4 choices 
(1), (2), (3) and (4), out of which ONLY ONE is correct. 
Choose the correct answer : 
1. Production of iron in blast furnace follows the 
following equation 
 
3 4 2
Fe O (s) 4CO(g) 3Fe(l) 4CO (g) + ?? ? + 
 when 4.640 kg of Fe3O4 and 2.520 kg of CO are 
allowed to react then the amount of iron (in g) 
produced is: 
 [Given : Molar Atomic mass (g mol
–1
) : Fe = 56 
   Molar Atomic mass (g mol
–1
) : O = 16 
   Molar Atomic mass (g mol
–1
) : C = 12] 
 (A) 1400 
 (B) 2200   
 (C) 3360 
 (D) 4200 
Answer (C) 
Sol.  
3
3
3 4 2
60 mole 60 56 2.52 10
4.64
moles
3360g 10 moles
28
232
90 moles
20moles
90 80
0
Fe O (s) 4CO(g) 3Fe(l) 4CO (g)
=? ?
= ?
-
+ ? + 
2. Which of the following statements are correct? 
 (A) The electronic configuration of Cr is [Ar] 3d
5
4s
1
. 
 (B) The magnetic quantum number may have a 
negative value. 
 (C) In the ground state of an atom, the orbitals are 
filled in order of their increasing energies. 
 (D) The total number of nodes are given by n – 2. 
 Choose the most appropriate answer from the 
options given below : 
 (A) (A), (C) and (D) only 
 (B) (A) and (B) only 
 (C) (A) and (C) only 
 (D) (A), (B) and (C) only 
Answer (D) 
Sol. Cr = (Ar)3d
5
4s
1
 
 M = +l to –l 
 As per Aufbau principle, orbitals are filled in 
increasing order of energy. 
 Total number of nodes = (n – 1) 
3. Arrange the following in the decreasing order of 
their covalent character : 
 (A) LiCl 
 (B) NaCl 
 (C) KCl 
 (D) CsCl 
 Choose the most appropriate answer from the 
 options given below : 
 (A) (A) > (C) > (B) > (D) 
 (B) (B) > (A) > (C) > (D) 
 (C) (A) > (B) > (C) > (D) 
 (D) (A) > (B) > (D) > (C) 
Answer (C) 
Sol. Covalent character ? polarising power of cation 
 Correct decreasing order of covalent character 
  LiCl > NaCl > KCl > CsCl 
4. The solubility of AgCl will be maximum in which of 
the following? 
 (A) 0.01 M KCl 
 (B) 0.01 M HCl 
 (C) 0.01 M AgNO3 
 (D) Deionised water 
Answer (D) 
Sol. Solubility decreases with increasing the 
concentration of common ion. Therefore, the 
maximum solubility of AgCl will be in deionized 
water. 
5. Which of the following is a correct statement? 
 (A) Brownian motion destabilises sols. 
 (B) Any amount of dispersed phase can be added 
to emulsion without destabilising it. 
 
   
  
 (C) Mixing two oppositely charged sols in equal 
amount neutralises charges and stabilises 
colloids. 
 (D) Presence of equal and similar charges on 
colloidal particles provides stability to the 
colloidal solution. 
Answer (D) 
Sol. Presence of equal and similar charges on colloidal 
particle provides stability to the colloidal solution. 
6. The electronic configuration of Pt(atomic number 
78) is: 
 (A) [Xe] 4f
14
 5d
9
 6s
1
 
 (B) [Kr] 4f
14
 5d
10
  
 (C) [Xe] 4f
14
 5d
10
 
 (D) [Xe] 4f
14
 5d
8 
6s
2
 
Answer (A) 
Sol. Pt = [Xe] 4f
14
 5d
9
 6s
1
 
7. In isolation of which one of the following metals 
from their ores, the use of cyanide salt is not 
commonly involved? 
 (A) Zinc (B) Gold 
 (C) Silver (D) Copper 
Answer (D) 
Sol. In the extraction of Silver and Gold, NaCN is used 
to leach the metal. 
 ( ) ( ) ( )
22
4Au s 8CN aq 2H O O g + + + ? 
 ( ) ( ) ( )
–
–
2
4 Au CN aq 4OH aq ?? +
??
 
– 2–
24
2[Au(CN) ] (aq) Zn 2Au(s) [(Zn(CN) )] (aq) + ? + 
 In case of ore containing ZnS and PbS, the 
depressant used is NaCN. 
8. Which one of following reactions indicates the 
reducing ability of hydrogen peroxide in basic 
medium? 
 (A) HOCI + H2O2 ? H3O
+ 
+ CI
– 
+ O2 
 (B) PbS + 4H2O2 ? PbSO4 + 4H2O  
 
(C)
  
–
4 2 2 2 2
–
2
2MnO 3H O 2MnO 3O
2H O 2OH
+ ? +
++
 
 (D) 
2+ 4+ –
22
Mn H O Mn 2OH + ? + 
Answer (C) 
Sol. 
7
–
4 2 2
2MnO 3H O
+
+? 
 
4
2 2 2
2MnO 3O 2H O 2OH
+
+ + + 
 In basic medium 
4
MnO
-
 is reduced to MnO2, 
whereas in acidic medium it is reduced to Mn
+2
. 
9. Match List-I with List-II. 
  List-I  List-II 
  (Metal)  (Emitted light  
    wavelength (nm)) 
 (A) Li (I) 670.8 
 (B) Na (II) 589.2 
 (C) Rb (III) 780.0 
 (D) Cs (IV) 455.5 
 Choose the most appropriate answer from the 
options given below: 
 (A) (A)-(I), (B)-(II), (C)-(III), (D)-(IV) 
 (B) (A)-(III), (B)-(II), (C)-(I), (D)-(IV) 
 (C) (A)-(III), (B)-(I), (C)-(II), (D)-(IV) 
 (D) (A)-(IV), (B)-(II), (C)-(I), (D)-(III) 
Answer (A) 
Sol.  
 
10. Match List-I with List-II. 
 List-I List-II 
 (Metal) (Application)  
 (A) Cs (I) High temperature 
    thermometer 
 (B) Ga (II) Water repellent  
    sprays 
 (C) B (III) Photoelectric cells  
 (D) Si (IV) Bullet proof vest 
 
   
  
 Choose the most appropriate answer from the 
options given below:   
 (A) (A)-(III), (B)-(I), (C)-(IV), (D)-(II) 
 (B) (A)-(IV), (B)-(III), (C)-(II), (D)-(I) 
 (C) (A)-(II), (B)-(III), (C)-(IV), (D)-(I) 
 (D) (A)-(I), (B)-(IV), (C)-(II), (D)-(III) 
Answer (A) 
Sol. Metal Application  
 Cs  Photoelectric cells  
 Ga  High temperature 
   thermometer 
 B  Bullet proof vest  
 Si  Water repellent  
   sprays 
11. The oxoacid of phosphorus that is easily obtained 
from a reaction of alkali and white phosphorus and 
has two P-H bonds, is: 
 (A) Phosphonic acid (B) Phosphinic acid 
 (C) Pyrophosphorus acid (D) Hypophosphoric acid 
Answer (B) 
Sol. White phosphorus + alkali ? H3PO2  
 H3PO2 = phosphinic acid 
12. The acid that is believed to be mainly responsible 
for the damage of Taj Mahal is 
 (A) sulfuric acid (B) hydrofluoric acid 
 (C) phosphoric acid (D) hydrochloric acid 
Answer (A) 
Sol. CaCO3 + H2SO4 ? CaSO4 + H2O + CO2 
13. Two isomers ‘A’ and ‘B’ with molecular formula 
C4H8 give different products on oxidation with 
KMnO4/H
+
 results in effervescence of a gas and 
gives ketone. The compound ‘A’ is 
 (A) But-1-ene 
 (B) cis-But-2-ene 
 (C) trans-But-2-ene 
 (D) 2-methyl propene 
Answer (D) 
Sol.
  
14.  
 In the given conversion the compound A is: 
 (A)
 
 
 (B)
 
 
 (C)
 
 
 (D)
 
 
Answer (B) 
Sol.
  
15. Given below are two statements: 
 Statement I: The esterification of carboxylic acid 
with an alcohol is a nucleophilic acyl substitution. 
 Statement II: Electron withdrawing groups in the 
carboxylic acid will increase the rate of esterification 
reaction. 
 Choose the most appropriate option : 
 (A) Both Statement I and Statement II are correct. 
 (B) Both Statement I and Statement II are 
 incorrect. 
 (C) Statement I is correct but Statement II is 
 incorrect. 
 (D) Statement I is incorrect but Statement II is 
 correct.  
Answer (A) 
Sol. Esterification of carboxylic acid with an alcohol is 
nucleophilic acyl substitution and presence of 
electron withdrawing group in the carboxylic acid 
increases the rate of esterification reaction. 
Page 4


 
   
  
CHEMISTRY 
SECTION - A 
Multiple Choice Questions: This section contains 20 
multiple choice questions. Each question has 4 choices 
(1), (2), (3) and (4), out of which ONLY ONE is correct. 
Choose the correct answer : 
1. Production of iron in blast furnace follows the 
following equation 
 
3 4 2
Fe O (s) 4CO(g) 3Fe(l) 4CO (g) + ?? ? + 
 when 4.640 kg of Fe3O4 and 2.520 kg of CO are 
allowed to react then the amount of iron (in g) 
produced is: 
 [Given : Molar Atomic mass (g mol
–1
) : Fe = 56 
   Molar Atomic mass (g mol
–1
) : O = 16 
   Molar Atomic mass (g mol
–1
) : C = 12] 
 (A) 1400 
 (B) 2200   
 (C) 3360 
 (D) 4200 
Answer (C) 
Sol.  
3
3
3 4 2
60 mole 60 56 2.52 10
4.64
moles
3360g 10 moles
28
232
90 moles
20moles
90 80
0
Fe O (s) 4CO(g) 3Fe(l) 4CO (g)
=? ?
= ?
-
+ ? + 
2. Which of the following statements are correct? 
 (A) The electronic configuration of Cr is [Ar] 3d
5
4s
1
. 
 (B) The magnetic quantum number may have a 
negative value. 
 (C) In the ground state of an atom, the orbitals are 
filled in order of their increasing energies. 
 (D) The total number of nodes are given by n – 2. 
 Choose the most appropriate answer from the 
options given below : 
 (A) (A), (C) and (D) only 
 (B) (A) and (B) only 
 (C) (A) and (C) only 
 (D) (A), (B) and (C) only 
Answer (D) 
Sol. Cr = (Ar)3d
5
4s
1
 
 M = +l to –l 
 As per Aufbau principle, orbitals are filled in 
increasing order of energy. 
 Total number of nodes = (n – 1) 
3. Arrange the following in the decreasing order of 
their covalent character : 
 (A) LiCl 
 (B) NaCl 
 (C) KCl 
 (D) CsCl 
 Choose the most appropriate answer from the 
 options given below : 
 (A) (A) > (C) > (B) > (D) 
 (B) (B) > (A) > (C) > (D) 
 (C) (A) > (B) > (C) > (D) 
 (D) (A) > (B) > (D) > (C) 
Answer (C) 
Sol. Covalent character ? polarising power of cation 
 Correct decreasing order of covalent character 
  LiCl > NaCl > KCl > CsCl 
4. The solubility of AgCl will be maximum in which of 
the following? 
 (A) 0.01 M KCl 
 (B) 0.01 M HCl 
 (C) 0.01 M AgNO3 
 (D) Deionised water 
Answer (D) 
Sol. Solubility decreases with increasing the 
concentration of common ion. Therefore, the 
maximum solubility of AgCl will be in deionized 
water. 
5. Which of the following is a correct statement? 
 (A) Brownian motion destabilises sols. 
 (B) Any amount of dispersed phase can be added 
to emulsion without destabilising it. 
 
   
  
 (C) Mixing two oppositely charged sols in equal 
amount neutralises charges and stabilises 
colloids. 
 (D) Presence of equal and similar charges on 
colloidal particles provides stability to the 
colloidal solution. 
Answer (D) 
Sol. Presence of equal and similar charges on colloidal 
particle provides stability to the colloidal solution. 
6. The electronic configuration of Pt(atomic number 
78) is: 
 (A) [Xe] 4f
14
 5d
9
 6s
1
 
 (B) [Kr] 4f
14
 5d
10
  
 (C) [Xe] 4f
14
 5d
10
 
 (D) [Xe] 4f
14
 5d
8 
6s
2
 
Answer (A) 
Sol. Pt = [Xe] 4f
14
 5d
9
 6s
1
 
7. In isolation of which one of the following metals 
from their ores, the use of cyanide salt is not 
commonly involved? 
 (A) Zinc (B) Gold 
 (C) Silver (D) Copper 
Answer (D) 
Sol. In the extraction of Silver and Gold, NaCN is used 
to leach the metal. 
 ( ) ( ) ( )
22
4Au s 8CN aq 2H O O g + + + ? 
 ( ) ( ) ( )
–
–
2
4 Au CN aq 4OH aq ?? +
??
 
– 2–
24
2[Au(CN) ] (aq) Zn 2Au(s) [(Zn(CN) )] (aq) + ? + 
 In case of ore containing ZnS and PbS, the 
depressant used is NaCN. 
8. Which one of following reactions indicates the 
reducing ability of hydrogen peroxide in basic 
medium? 
 (A) HOCI + H2O2 ? H3O
+ 
+ CI
– 
+ O2 
 (B) PbS + 4H2O2 ? PbSO4 + 4H2O  
 
(C)
  
–
4 2 2 2 2
–
2
2MnO 3H O 2MnO 3O
2H O 2OH
+ ? +
++
 
 (D) 
2+ 4+ –
22
Mn H O Mn 2OH + ? + 
Answer (C) 
Sol. 
7
–
4 2 2
2MnO 3H O
+
+? 
 
4
2 2 2
2MnO 3O 2H O 2OH
+
+ + + 
 In basic medium 
4
MnO
-
 is reduced to MnO2, 
whereas in acidic medium it is reduced to Mn
+2
. 
9. Match List-I with List-II. 
  List-I  List-II 
  (Metal)  (Emitted light  
    wavelength (nm)) 
 (A) Li (I) 670.8 
 (B) Na (II) 589.2 
 (C) Rb (III) 780.0 
 (D) Cs (IV) 455.5 
 Choose the most appropriate answer from the 
options given below: 
 (A) (A)-(I), (B)-(II), (C)-(III), (D)-(IV) 
 (B) (A)-(III), (B)-(II), (C)-(I), (D)-(IV) 
 (C) (A)-(III), (B)-(I), (C)-(II), (D)-(IV) 
 (D) (A)-(IV), (B)-(II), (C)-(I), (D)-(III) 
Answer (A) 
Sol.  
 
10. Match List-I with List-II. 
 List-I List-II 
 (Metal) (Application)  
 (A) Cs (I) High temperature 
    thermometer 
 (B) Ga (II) Water repellent  
    sprays 
 (C) B (III) Photoelectric cells  
 (D) Si (IV) Bullet proof vest 
 
   
  
 Choose the most appropriate answer from the 
options given below:   
 (A) (A)-(III), (B)-(I), (C)-(IV), (D)-(II) 
 (B) (A)-(IV), (B)-(III), (C)-(II), (D)-(I) 
 (C) (A)-(II), (B)-(III), (C)-(IV), (D)-(I) 
 (D) (A)-(I), (B)-(IV), (C)-(II), (D)-(III) 
Answer (A) 
Sol. Metal Application  
 Cs  Photoelectric cells  
 Ga  High temperature 
   thermometer 
 B  Bullet proof vest  
 Si  Water repellent  
   sprays 
11. The oxoacid of phosphorus that is easily obtained 
from a reaction of alkali and white phosphorus and 
has two P-H bonds, is: 
 (A) Phosphonic acid (B) Phosphinic acid 
 (C) Pyrophosphorus acid (D) Hypophosphoric acid 
Answer (B) 
Sol. White phosphorus + alkali ? H3PO2  
 H3PO2 = phosphinic acid 
12. The acid that is believed to be mainly responsible 
for the damage of Taj Mahal is 
 (A) sulfuric acid (B) hydrofluoric acid 
 (C) phosphoric acid (D) hydrochloric acid 
Answer (A) 
Sol. CaCO3 + H2SO4 ? CaSO4 + H2O + CO2 
13. Two isomers ‘A’ and ‘B’ with molecular formula 
C4H8 give different products on oxidation with 
KMnO4/H
+
 results in effervescence of a gas and 
gives ketone. The compound ‘A’ is 
 (A) But-1-ene 
 (B) cis-But-2-ene 
 (C) trans-But-2-ene 
 (D) 2-methyl propene 
Answer (D) 
Sol.
  
14.  
 In the given conversion the compound A is: 
 (A)
 
 
 (B)
 
 
 (C)
 
 
 (D)
 
 
Answer (B) 
Sol.
  
15. Given below are two statements: 
 Statement I: The esterification of carboxylic acid 
with an alcohol is a nucleophilic acyl substitution. 
 Statement II: Electron withdrawing groups in the 
carboxylic acid will increase the rate of esterification 
reaction. 
 Choose the most appropriate option : 
 (A) Both Statement I and Statement II are correct. 
 (B) Both Statement I and Statement II are 
 incorrect. 
 (C) Statement I is correct but Statement II is 
 incorrect. 
 (D) Statement I is incorrect but Statement II is 
 correct.  
Answer (A) 
Sol. Esterification of carboxylic acid with an alcohol is 
nucleophilic acyl substitution and presence of 
electron withdrawing group in the carboxylic acid 
increases the rate of esterification reaction. 
 
   
  
16.  
 Consider the above reactions, the product A and 
product B respectively are 
 (A)   
 (B)  
 (C)  
 (D)  
Answer (C) 
Sol.  
17. The polymer, which can be stretched and retains its 
original status on releasing the force is 
 (A) Bakelite 
 (B) Nylon 6, 6 
 (C) Buna-N 
 (D) Terylene 
Answer (C) 
Sol. Buna – N is a synthetic rubber which can be 
stretched and retains its original status on releasing 
the force. 
18. Sugar moiety in DNA and RNA molecules 
respectively are 
 (A) ?-D-2-deoxyribose, ?-D-deoxyribose 
 (B) ?-D-2-deoxyribose, ?-D-ribose 
 (C) ?-D-ribose, ?-D-2-deoxyribose 
 (D) ?-D-deoxyribose, ?-D-2-deoxyribose 
Answer (B) 
Sol. DNA consists of ?-D-2-deoxyribose sugar whereas 
 RNA consists of ?-D-ribose. 
19. Which of the following compound does not contain 
sulphur atom? 
 (A) Cimetidine 
 (B) Ranitidine 
 (C) Histamine 
 (D) Saccharin 
Answer (C) 
Sol. Histamine – does not contain sulphur. 
  
20. Given below are two statements. 
 Statement I : Phenols are weakly acidic. 
 Statement II : Therefore they are freely soluble in 
NaOH solution and are weaker acids than alcohols 
and water. 
 Choose the most appropriate option. 
Page 5


 
   
  
CHEMISTRY 
SECTION - A 
Multiple Choice Questions: This section contains 20 
multiple choice questions. Each question has 4 choices 
(1), (2), (3) and (4), out of which ONLY ONE is correct. 
Choose the correct answer : 
1. Production of iron in blast furnace follows the 
following equation 
 
3 4 2
Fe O (s) 4CO(g) 3Fe(l) 4CO (g) + ?? ? + 
 when 4.640 kg of Fe3O4 and 2.520 kg of CO are 
allowed to react then the amount of iron (in g) 
produced is: 
 [Given : Molar Atomic mass (g mol
–1
) : Fe = 56 
   Molar Atomic mass (g mol
–1
) : O = 16 
   Molar Atomic mass (g mol
–1
) : C = 12] 
 (A) 1400 
 (B) 2200   
 (C) 3360 
 (D) 4200 
Answer (C) 
Sol.  
3
3
3 4 2
60 mole 60 56 2.52 10
4.64
moles
3360g 10 moles
28
232
90 moles
20moles
90 80
0
Fe O (s) 4CO(g) 3Fe(l) 4CO (g)
=? ?
= ?
-
+ ? + 
2. Which of the following statements are correct? 
 (A) The electronic configuration of Cr is [Ar] 3d
5
4s
1
. 
 (B) The magnetic quantum number may have a 
negative value. 
 (C) In the ground state of an atom, the orbitals are 
filled in order of their increasing energies. 
 (D) The total number of nodes are given by n – 2. 
 Choose the most appropriate answer from the 
options given below : 
 (A) (A), (C) and (D) only 
 (B) (A) and (B) only 
 (C) (A) and (C) only 
 (D) (A), (B) and (C) only 
Answer (D) 
Sol. Cr = (Ar)3d
5
4s
1
 
 M = +l to –l 
 As per Aufbau principle, orbitals are filled in 
increasing order of energy. 
 Total number of nodes = (n – 1) 
3. Arrange the following in the decreasing order of 
their covalent character : 
 (A) LiCl 
 (B) NaCl 
 (C) KCl 
 (D) CsCl 
 Choose the most appropriate answer from the 
 options given below : 
 (A) (A) > (C) > (B) > (D) 
 (B) (B) > (A) > (C) > (D) 
 (C) (A) > (B) > (C) > (D) 
 (D) (A) > (B) > (D) > (C) 
Answer (C) 
Sol. Covalent character ? polarising power of cation 
 Correct decreasing order of covalent character 
  LiCl > NaCl > KCl > CsCl 
4. The solubility of AgCl will be maximum in which of 
the following? 
 (A) 0.01 M KCl 
 (B) 0.01 M HCl 
 (C) 0.01 M AgNO3 
 (D) Deionised water 
Answer (D) 
Sol. Solubility decreases with increasing the 
concentration of common ion. Therefore, the 
maximum solubility of AgCl will be in deionized 
water. 
5. Which of the following is a correct statement? 
 (A) Brownian motion destabilises sols. 
 (B) Any amount of dispersed phase can be added 
to emulsion without destabilising it. 
 
   
  
 (C) Mixing two oppositely charged sols in equal 
amount neutralises charges and stabilises 
colloids. 
 (D) Presence of equal and similar charges on 
colloidal particles provides stability to the 
colloidal solution. 
Answer (D) 
Sol. Presence of equal and similar charges on colloidal 
particle provides stability to the colloidal solution. 
6. The electronic configuration of Pt(atomic number 
78) is: 
 (A) [Xe] 4f
14
 5d
9
 6s
1
 
 (B) [Kr] 4f
14
 5d
10
  
 (C) [Xe] 4f
14
 5d
10
 
 (D) [Xe] 4f
14
 5d
8 
6s
2
 
Answer (A) 
Sol. Pt = [Xe] 4f
14
 5d
9
 6s
1
 
7. In isolation of which one of the following metals 
from their ores, the use of cyanide salt is not 
commonly involved? 
 (A) Zinc (B) Gold 
 (C) Silver (D) Copper 
Answer (D) 
Sol. In the extraction of Silver and Gold, NaCN is used 
to leach the metal. 
 ( ) ( ) ( )
22
4Au s 8CN aq 2H O O g + + + ? 
 ( ) ( ) ( )
–
–
2
4 Au CN aq 4OH aq ?? +
??
 
– 2–
24
2[Au(CN) ] (aq) Zn 2Au(s) [(Zn(CN) )] (aq) + ? + 
 In case of ore containing ZnS and PbS, the 
depressant used is NaCN. 
8. Which one of following reactions indicates the 
reducing ability of hydrogen peroxide in basic 
medium? 
 (A) HOCI + H2O2 ? H3O
+ 
+ CI
– 
+ O2 
 (B) PbS + 4H2O2 ? PbSO4 + 4H2O  
 
(C)
  
–
4 2 2 2 2
–
2
2MnO 3H O 2MnO 3O
2H O 2OH
+ ? +
++
 
 (D) 
2+ 4+ –
22
Mn H O Mn 2OH + ? + 
Answer (C) 
Sol. 
7
–
4 2 2
2MnO 3H O
+
+? 
 
4
2 2 2
2MnO 3O 2H O 2OH
+
+ + + 
 In basic medium 
4
MnO
-
 is reduced to MnO2, 
whereas in acidic medium it is reduced to Mn
+2
. 
9. Match List-I with List-II. 
  List-I  List-II 
  (Metal)  (Emitted light  
    wavelength (nm)) 
 (A) Li (I) 670.8 
 (B) Na (II) 589.2 
 (C) Rb (III) 780.0 
 (D) Cs (IV) 455.5 
 Choose the most appropriate answer from the 
options given below: 
 (A) (A)-(I), (B)-(II), (C)-(III), (D)-(IV) 
 (B) (A)-(III), (B)-(II), (C)-(I), (D)-(IV) 
 (C) (A)-(III), (B)-(I), (C)-(II), (D)-(IV) 
 (D) (A)-(IV), (B)-(II), (C)-(I), (D)-(III) 
Answer (A) 
Sol.  
 
10. Match List-I with List-II. 
 List-I List-II 
 (Metal) (Application)  
 (A) Cs (I) High temperature 
    thermometer 
 (B) Ga (II) Water repellent  
    sprays 
 (C) B (III) Photoelectric cells  
 (D) Si (IV) Bullet proof vest 
 
   
  
 Choose the most appropriate answer from the 
options given below:   
 (A) (A)-(III), (B)-(I), (C)-(IV), (D)-(II) 
 (B) (A)-(IV), (B)-(III), (C)-(II), (D)-(I) 
 (C) (A)-(II), (B)-(III), (C)-(IV), (D)-(I) 
 (D) (A)-(I), (B)-(IV), (C)-(II), (D)-(III) 
Answer (A) 
Sol. Metal Application  
 Cs  Photoelectric cells  
 Ga  High temperature 
   thermometer 
 B  Bullet proof vest  
 Si  Water repellent  
   sprays 
11. The oxoacid of phosphorus that is easily obtained 
from a reaction of alkali and white phosphorus and 
has two P-H bonds, is: 
 (A) Phosphonic acid (B) Phosphinic acid 
 (C) Pyrophosphorus acid (D) Hypophosphoric acid 
Answer (B) 
Sol. White phosphorus + alkali ? H3PO2  
 H3PO2 = phosphinic acid 
12. The acid that is believed to be mainly responsible 
for the damage of Taj Mahal is 
 (A) sulfuric acid (B) hydrofluoric acid 
 (C) phosphoric acid (D) hydrochloric acid 
Answer (A) 
Sol. CaCO3 + H2SO4 ? CaSO4 + H2O + CO2 
13. Two isomers ‘A’ and ‘B’ with molecular formula 
C4H8 give different products on oxidation with 
KMnO4/H
+
 results in effervescence of a gas and 
gives ketone. The compound ‘A’ is 
 (A) But-1-ene 
 (B) cis-But-2-ene 
 (C) trans-But-2-ene 
 (D) 2-methyl propene 
Answer (D) 
Sol.
  
14.  
 In the given conversion the compound A is: 
 (A)
 
 
 (B)
 
 
 (C)
 
 
 (D)
 
 
Answer (B) 
Sol.
  
15. Given below are two statements: 
 Statement I: The esterification of carboxylic acid 
with an alcohol is a nucleophilic acyl substitution. 
 Statement II: Electron withdrawing groups in the 
carboxylic acid will increase the rate of esterification 
reaction. 
 Choose the most appropriate option : 
 (A) Both Statement I and Statement II are correct. 
 (B) Both Statement I and Statement II are 
 incorrect. 
 (C) Statement I is correct but Statement II is 
 incorrect. 
 (D) Statement I is incorrect but Statement II is 
 correct.  
Answer (A) 
Sol. Esterification of carboxylic acid with an alcohol is 
nucleophilic acyl substitution and presence of 
electron withdrawing group in the carboxylic acid 
increases the rate of esterification reaction. 
 
   
  
16.  
 Consider the above reactions, the product A and 
product B respectively are 
 (A)   
 (B)  
 (C)  
 (D)  
Answer (C) 
Sol.  
17. The polymer, which can be stretched and retains its 
original status on releasing the force is 
 (A) Bakelite 
 (B) Nylon 6, 6 
 (C) Buna-N 
 (D) Terylene 
Answer (C) 
Sol. Buna – N is a synthetic rubber which can be 
stretched and retains its original status on releasing 
the force. 
18. Sugar moiety in DNA and RNA molecules 
respectively are 
 (A) ?-D-2-deoxyribose, ?-D-deoxyribose 
 (B) ?-D-2-deoxyribose, ?-D-ribose 
 (C) ?-D-ribose, ?-D-2-deoxyribose 
 (D) ?-D-deoxyribose, ?-D-2-deoxyribose 
Answer (B) 
Sol. DNA consists of ?-D-2-deoxyribose sugar whereas 
 RNA consists of ?-D-ribose. 
19. Which of the following compound does not contain 
sulphur atom? 
 (A) Cimetidine 
 (B) Ranitidine 
 (C) Histamine 
 (D) Saccharin 
Answer (C) 
Sol. Histamine – does not contain sulphur. 
  
20. Given below are two statements. 
 Statement I : Phenols are weakly acidic. 
 Statement II : Therefore they are freely soluble in 
NaOH solution and are weaker acids than alcohols 
and water. 
 Choose the most appropriate option. 
 
   
  
 (A) Both Statement I and Statement II are correct. 
 (B) Both Statement I and Statement II are correct. 
 (C) Statement I is correct but Statement II is 
incorrect. 
 (D) Statement I is incorrect but Statement II is 
correct. 
Answer (C) 
Sol.  pKa 10 = 
 Alcohol pKa 16 ? 
 H2O pKa 15 ? 
SECTION - B 
Numerical Value Type Questions: This section 
contains 10 questions. In Section B, attempt any five 
questions out of 10. The answer to each question is a 
NUMERICAL VALUE. For each question, enter the 
correct numerical value (in decimal notation, 
truncated/rounded-off to the second decimal place; e.g. 
06.25, 07.00, –00.33, –00.30, 30.27, –27.30) using the 
mouse and the on-screen virtual numeric keypad in the 
place designated to enter the answer. 
1. Geraniol, a volatile organic compound, is a 
component of rose oil. The density of the vapour is 
0.46 gL
–1
 at 257°C and 100 mm Hg. The molar 
mass of geraniol is ____ g mol 
–1
. (Nearest Integer) 
[Given: R = 0.082 L atm K
–1
 mol
–1
] 
Answer (152) 
Sol. 
PM 0.46 0.082 530 760
dM
RT 100
? ? ?
= = = 
       ? 152 g mol
–1
 
2. 17.0 g of NH3 completely vapourises at – 33.42°C 
and 1 bar pressure and the enthalpy change in the 
process is 23.4 kJ mol
–1 
. The enthalpy change for 
the vapourisation of 85 g of NH3 under the same 
conditions is ____ kJ. 
Answer (117) 
Sol. Number of moles of NH3 = 5 
 So, required ?H = 5 × 23.4 
                      = 117 kJ 
3. 1.2 mL of acetic acid is dissolved in water to make 
2.0 L of solution. The depression in freezing point 
observed for this strength of acid is 0.0198°C. The 
percentage of dissociation of the acid is ____ . 
(Nearest integer)  
 [Given: Density of acetic acid is 1.02 g mL
–1  
 
Molar mass of acetic acid is 60 g mol
–1  
 
Kf(H2O) = 1.85 K kg mol
–1
] 
Answer (5) 
Sol. ?Tb = i × Kb × m 
 Moles of solute (acetic acid) = 
1.2 1.02
60
?
 
 As moles of solute are very less.  
 So, take molarity and molality same. 
 0.0198 = i × 1.85 × 
1.2 1.02
60 2
?
?
 
 i = 1.05 
 
i 1 0.05
0.05
n 1 1
-
? = = =
-
 
4. A dilute solution of sulphuric acid is electrolysed 
using a current of 0.10 A for 2 hours to produce 
hydrogen and oxygen gas. The total volume of 
gases produced at STP is ____ cm
3
. (Nearest 
integer)  
 [Given : Faraday constant F = 96500 C mol
–1
 at 
STP, molar volume of an ideal gas is 22.7 L mol
–1
] 
Answer (127 cm
3
) 
Sol. 2 F produces = 
3
2
 mole of gas  
 0.10 ×2 × 3600 coulomb produces  
  = 
3
0.1 2 3600
2
2 96500
? ? ?
?
 
  = 0.0056 moles of gas