JEE Main 2023 (Online) 13th April Evening Shift | Hydrogen Question 1 | Chemistry

1

JEE Main 2023 (Online) 13th April Evening Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

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:

A

A is not correct but R is correct

B

Both A and R are correct but R is NOT the correct explanation of A

C

A is correct but R is not correct

D

Both A and R are correct and R is the correct explanation of A

2

JEE Main 2023 (Online) 13th April Morning Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

Given below are two statements :

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.

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 correct

C

Both the Statements I and II are incorrect

D

Statement I is incorrect but Statement II is correct

3

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

4

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$$_2$$