JEE Main 2024 (Online) 31st January Morning Shift | Alcohols, Phenols and Ethers Question 13 | Chemistry

1

JEE Main 2024 (Online) 31st January Morning 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: Alcohols react both as nucleophiles and electrophiles.

Reason R: Alcohols react with active metals such as sodium, potassium and aluminum to yield corresponding alkoxides and liberate hydrogen.

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

A

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

B

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

C

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

D

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

2

JEE Main 2024 (Online) 31st January Morning 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: $$\mathrm{pK}_{\mathrm{a}}$$ value of phenol is 10.0 while that of ethanol is 15.9 .

Reason R: Ethanol is stronger acid than phenol.

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

A

A is false but R is true.

B

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

C

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

D

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

3

JEE Main 2024 (Online) 29th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Phenol treated with chloroform in presence of sodium hydroxide, which further hydrolyzed in presence of an acid results

A

Salicylic acid

B

Benzene-1,2-diol

C

2-Hydroxybenzaldehyde

D

Benzene-1,3-diol

4

JEE Main 2024 (Online) 29th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Match List I with List II

	List - I (Compound)		List - II ($$\mathrm{pK_a}$$ value)
(A)	Ethanol	(I)	10.0
(B)	Phenol	(II)	15.9
(C)	m-Nitrophenol	(III)	7.1
(D)	p-Nitrophenol	(IV)	8.3

Choose the correct answer from the options given below:

A

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

B

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

C

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

D

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