JEE Main 2023 (Online) 12th April Morning Shift | Hydrogen Question 3 | Chemistry

1

JEE Main 2023 (Online) 12th April Morning Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

Match List I with List II

	LIST I Type of Hydride		LIST II Example
A.	Electron deficient hydride	I.	$$\mathrm{MgH_2}$$
B.	Electron rich hydride	II.	$$\mathrm{HF}$$
C.	Electron precise hydride	III.	$$\mathrm{B_2H_6}$$
D.	Saline hydride	IV.	$$\mathrm{CH_4}$$

Choose the correct answer from the options given below:

A

A-III, B-II, C-I, D-IV

B

A-II, B-III, C-I, D-IV

C

A-III, B-II, C-IV, D-I

D

A-II, B-III, C-IV, D-I

2

JEE Main 2023 (Online) 11th April Evening Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

Which hydride among the following is less stable?

A

NH$$_3$$

B

HF

C

LiH

D

BeH$$_2$$

3

JEE Main 2023 (Online) 11th April Morning Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

Given below are two statements:

Statement-I : Methane and steam passed over a heated $$\mathrm{Ni}$$ catalyst produces hydrogen gas.

Statement-II : Sodium nitrite reacts with $$\mathrm{NH}_{4} \mathrm{Cl}$$ to give $$\mathrm{H}_{2} \mathrm{O}, \mathrm{N}_{2}$$ and $$\mathrm{NaCl}$$.

In the light of the above statements, choose the most appropriate answer from the options given below :

A

Statement I is correct but Statement II is incorrect

B

Both the statements I and II are incorrect

C

Both the statements I and II are correct

D

Statement I is incorrect but Statement II is correct

4

JEE Main 2023 (Online) 10th April Evening Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

Given below are two statements: one is labelled as Assertion $$\mathbf{A}$$ and the other is labelled as Reason $$\mathbf{R}$$

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:

A

$$\mathbf{A}$$ is true but $$\mathbf{R}$$ is false

B

Both $$\mathbf{A}$$ and $$\mathbf{R}$$ are true but $$\mathbf{R}$$ is NOT the correct explanation of $$\mathbf{A}$$

C

$$\mathbf{A}$$ is false but $$\mathbf{R}$$ is true

D

Both $$\mathbf{A}$$ and $$\mathbf{R}$$ are true and $$\mathrm{R}$$ is the correct explanation of $$\mathbf{A}$$