JEE Main 2024 (Online) 31st January Morning Shift | Periodic Table & Periodicity Question 16 | Chemistry

1

JEE Main 2024 (Online) 31st January Morning Shift

MCQ (Single Correct Answer)

+4

-1

The correct sequence of electron gain enthalpy of the elements listed below is

A. Ar

B. Br

C. F

D. S

Choose the most appropriate from the options given below:

A

$$\mathrm{A>D>C>B}$$

B

$$\mathrm{A}>\mathrm{D}>\mathrm{B}>\mathrm{C}$$

C

$$\mathrm{D}>\mathrm{C}>\mathrm{B}>\mathrm{A}$$

D

$$\mathrm{C}>\mathrm{B}>\mathrm{D}>\mathrm{A}$$

2

JEE Main 2024 (Online) 30th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:

Assertion A: $$\mathrm{H}_2 \mathrm{Te}$$ is more acidic than $$\mathrm{H}_2 \mathrm{~S}$$.

Reason R: Bond dissociation enthalpy of $$\mathrm{H}_2 \mathrm{Te}$$ is lower than $$\mathrm{H}_2 \mathrm{~S}$$.

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

A

Both $$A$$ and $$R$$ are true and $$R$$ is the correct explanation of $$A$$.

B

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

C

$$A$$ is false but $$R$$ is true.

D

$$A$$ is true but $$R$$ is false.

3

JEE Main 2024 (Online) 30th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Given below are two statements:

Statement - I: Along the period, the chemical reactivity of the elements gradually increases from group 1 to group 18 .

Statement - II: The nature of oxides formed by group 1 elements is basic while that of group 17 elements is acidic.

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

A

Statement I is False but Statement II is true

B

Both Statement I and Statement II are False

C

Statement I is True But Statement II is False

D

Both Statement I and Statement II are True

4

JEE Main 2024 (Online) 30th January Morning Shift

MCQ (Single Correct Answer)

+4

-1

Match List I with List II.

	List I Species		List II Electronic distribution
(A)	$$\mathrm{Cr^{+2}}$$	(I)	$$\mathrm{3d^8}$$
(B)	$$\mathrm{Mn^+}$$	(II)	$$\mathrm{3d^34s^1}$$
(C)	$$\mathrm{Ni^{+2}}$$	(III)	$$\mathrm{3d^4}$$
(D)	$$\mathrm{V^+}$$	(IV)	$$\mathrm{3d^54s^1}$$

Choose the correct answer from the options given below :

A

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

B

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

C

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

D

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