Hydrogen: JEE Mains Previous Year Questions (2021-2024) | Chemistry for JEE Main & Advanced PDF Download

 Page 1


P- 1
MCQ (Single Correct Answer) 
 
 
Q.1. Given below are two statements, one is labelled as Assertion 
A and the other is labelled as Reason R. 
Assertion A : Isotopes of hydrogen have almost same chemical 
properties, but difference in their rates of reaction. 
Reason R : Isotopes of hydrogen have different enthalpy of bond 
dissociation. 
In the light of the above statements, choose the most appropriate 
answer from the options given below: 
 
 
JEE Main 2023 (Online) 13th April Evening Shift 
Q.2. Given below are two statements : 
Page 2


P- 1
MCQ (Single Correct Answer) 
 
 
Q.1. Given below are two statements, one is labelled as Assertion 
A and the other is labelled as Reason R. 
Assertion A : Isotopes of hydrogen have almost same chemical 
properties, but difference in their rates of reaction. 
Reason R : Isotopes of hydrogen have different enthalpy of bond 
dissociation. 
In the light of the above statements, choose the most appropriate 
answer from the options given below: 
 
 
JEE Main 2023 (Online) 13th April Evening Shift 
Q.2. Given below are two statements : 
In the light of the above statements, choose the most appropriate 
answer from the options given below: 
 
 
JEE Main 2023 (Online) 13th April Morning Shift 
 
Q.3. Match List I with List II 
 
LIST I 
Type of Hydride 
 
LIST II 
Example 
A. Electron deficient hydride I. MgH2 
B. Electron rich hydride II. HF 
C. Electron precise hydride III. B2H6 
D. Saline hydride IV. CH4 
Choose the correct answer from the options given below: 
 
Statement I: Permutit process is more efficient compared to the 
synthetic resin method for the softening of water. 
Statement II: Synthetic resin method results in the formation of 
soluble sodium salts. 
Page 3


P- 1
MCQ (Single Correct Answer) 
 
 
Q.1. Given below are two statements, one is labelled as Assertion 
A and the other is labelled as Reason R. 
Assertion A : Isotopes of hydrogen have almost same chemical 
properties, but difference in their rates of reaction. 
Reason R : Isotopes of hydrogen have different enthalpy of bond 
dissociation. 
In the light of the above statements, choose the most appropriate 
answer from the options given below: 
 
 
JEE Main 2023 (Online) 13th April Evening Shift 
Q.2. Given below are two statements : 
In the light of the above statements, choose the most appropriate 
answer from the options given below: 
 
 
JEE Main 2023 (Online) 13th April Morning Shift 
 
Q.3. Match List I with List II 
 
LIST I 
Type of Hydride 
 
LIST II 
Example 
A. Electron deficient hydride I. MgH2 
B. Electron rich hydride II. HF 
C. Electron precise hydride III. B2H6 
D. Saline hydride IV. CH4 
Choose the correct answer from the options given below: 
 
Statement I: Permutit process is more efficient compared to the 
synthetic resin method for the softening of water. 
Statement II: Synthetic resin method results in the formation of 
soluble sodium salts. 
 
 
JEE Main 2023 (Online) 12th April Morning Shift 
 
Q.4. Which hydride among the following is less stable? 
 
JEE Main 2023 (Online) 11th April Evening Shift 
 
Q.5. Given below are two statements: 
Page 4


P- 1
MCQ (Single Correct Answer) 
 
 
Q.1. Given below are two statements, one is labelled as Assertion 
A and the other is labelled as Reason R. 
Assertion A : Isotopes of hydrogen have almost same chemical 
properties, but difference in their rates of reaction. 
Reason R : Isotopes of hydrogen have different enthalpy of bond 
dissociation. 
In the light of the above statements, choose the most appropriate 
answer from the options given below: 
 
 
JEE Main 2023 (Online) 13th April Evening Shift 
Q.2. Given below are two statements : 
In the light of the above statements, choose the most appropriate 
answer from the options given below: 
 
 
JEE Main 2023 (Online) 13th April Morning Shift 
 
Q.3. Match List I with List II 
 
LIST I 
Type of Hydride 
 
LIST II 
Example 
A. Electron deficient hydride I. MgH2 
B. Electron rich hydride II. HF 
C. Electron precise hydride III. B2H6 
D. Saline hydride IV. CH4 
Choose the correct answer from the options given below: 
 
Statement I: Permutit process is more efficient compared to the 
synthetic resin method for the softening of water. 
Statement II: Synthetic resin method results in the formation of 
soluble sodium salts. 
 
 
JEE Main 2023 (Online) 12th April Morning Shift 
 
Q.4. Which hydride among the following is less stable? 
 
JEE Main 2023 (Online) 11th April Evening Shift 
 
Q.5. Given below are two statements: 
Statement-I : Methane and steam passed over a heated Ni catalyst 
produces hydrogen gas. 
Statement-II : Sodium nitrite reacts with NH4Cl to 
give H2O,N2 and NaCl. 
In the light of the above statements, choose the most appropriate 
answer from the options given below : 
 
 
JEE Main 2023 (Online) 11th April Morning Shift 
 
Q.6. Given below are two statements: one is labelled as 
Assertion A and the other is labelled as Reason R 
Assertion A : Physical properties of isotopes of hydrogen are 
different. 
Reason R : Mass difference between isotopes of hydrogen is very 
large. 
In the light of the above statements, choose the correct answer 
from the options given below: 
Page 5


P- 1
MCQ (Single Correct Answer) 
 
 
Q.1. Given below are two statements, one is labelled as Assertion 
A and the other is labelled as Reason R. 
Assertion A : Isotopes of hydrogen have almost same chemical 
properties, but difference in their rates of reaction. 
Reason R : Isotopes of hydrogen have different enthalpy of bond 
dissociation. 
In the light of the above statements, choose the most appropriate 
answer from the options given below: 
 
 
JEE Main 2023 (Online) 13th April Evening Shift 
Q.2. Given below are two statements : 
In the light of the above statements, choose the most appropriate 
answer from the options given below: 
 
 
JEE Main 2023 (Online) 13th April Morning Shift 
 
Q.3. Match List I with List II 
 
LIST I 
Type of Hydride 
 
LIST II 
Example 
A. Electron deficient hydride I. MgH2 
B. Electron rich hydride II. HF 
C. Electron precise hydride III. B2H6 
D. Saline hydride IV. CH4 
Choose the correct answer from the options given below: 
 
Statement I: Permutit process is more efficient compared to the 
synthetic resin method for the softening of water. 
Statement II: Synthetic resin method results in the formation of 
soluble sodium salts. 
 
 
JEE Main 2023 (Online) 12th April Morning Shift 
 
Q.4. Which hydride among the following is less stable? 
 
JEE Main 2023 (Online) 11th April Evening Shift 
 
Q.5. Given below are two statements: 
Statement-I : Methane and steam passed over a heated Ni catalyst 
produces hydrogen gas. 
Statement-II : Sodium nitrite reacts with NH4Cl to 
give H2O,N2 and NaCl. 
In the light of the above statements, choose the most appropriate 
answer from the options given below : 
 
 
JEE Main 2023 (Online) 11th April Morning Shift 
 
Q.6. Given below are two statements: one is labelled as 
Assertion A and the other is labelled as Reason R 
Assertion A : Physical properties of isotopes of hydrogen are 
different. 
Reason R : Mass difference between isotopes of hydrogen is very 
large. 
In the light of the above statements, choose the correct answer 
from the options given below: 
 
 
JEE Main 2023 (Online) 10th April Evening Shift 
 
Q.7. Given below are two reactions, involved in the commercial 
production of dihydrogen (H2). The two reactions are carried out 
at temperature "T1" and "T2", respectively 
 
The temperatures T1 and T2 are correctly related as