QBManager

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323260 Phenol does not react with

1 Sodium bicarbonate

2 Sodium hydroxide

3 Potassium hydroxide

4 Ferric chloride

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323261 Phenol is less acidic than

1 Ethanol

2 o-nitrophenol

3 o-methylphenol

4 o-methoxyphenol

Explanation:

Due to EWG nature of $- {NO}_{2}$ .

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323262 Mark the correct order of decreasing acid strength of the following compounds.(I)(V)
supporting img

1 V

>

IV

>

II

>

I

>

III

2 II

>

IV

>

III

>

I

>

V

3 IV

>

V

>

III

>

II

>

I

4 V

>

IV

>

III

>

II

>

I

Explanation:

Phenol acidic strength is directly proportional to -I. effect group and inversely proportional to $+ I$ . effect group.

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323263 The correct order of ${pK}_{a}$ values for the following compound is
supporting img

1 A

>

B

>

C

>

D

2 B

>

A

>

D

>

C

3 B

>

D

>

A

>

C

4 C

>

A

>

D

>

B

Explanation:

Higher the value of $K_{a}$ or lower the value of ${pK}_{a}$ , stronger will be the acid.
Presence of electron donating groups reduces acidic nature of phenol. Presence of electron withdrawing group increases the acidic strength of phenol. Thus, order of acidic strength
supporting img

Hence, ${pK}_{a}$ order: $B > D > A > C$ .

JEE - 2023

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323264 Which one the following compounds will readily react with dilute NaOH ?

1

C_{6} H_{5} OH

2

C_{2} H_{5} OH

3

{({CH}_{3})}_{3} COH

4

C_{6} H_{5} {CH}_{2} OH

JEE Main - 2024

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323260 Phenol does not react with

1 Sodium bicarbonate

2 Sodium hydroxide

3 Potassium hydroxide

4 Ferric chloride

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323261 Phenol is less acidic than

1 Ethanol

2 o-nitrophenol

3 o-methylphenol

4 o-methoxyphenol

Explanation:

Due to EWG nature of $- {NO}_{2}$ .

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323262 Mark the correct order of decreasing acid strength of the following compounds.(I)(V)
supporting img

1 V

>

IV

>

II

>

I

>

III

2 II

>

IV

>

III

>

I

>

V

3 IV

>

V

>

III

>

II

>

I

4 V

>

IV

>

III

>

II

>

I

Explanation:

Phenol acidic strength is directly proportional to -I. effect group and inversely proportional to $+ I$ . effect group.

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323263 The correct order of ${pK}_{a}$ values for the following compound is
supporting img

1 A

>

B

>

C

>

D

2 B

>

A

>

D

>

C

3 B

>

D

>

A

>

C

4 C

>

A

>

D

>

B

Explanation:

Higher the value of $K_{a}$ or lower the value of ${pK}_{a}$ , stronger will be the acid.
Presence of electron donating groups reduces acidic nature of phenol. Presence of electron withdrawing group increases the acidic strength of phenol. Thus, order of acidic strength
supporting img

Hence, ${pK}_{a}$ order: $B > D > A > C$ .

JEE - 2023

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323264 Which one the following compounds will readily react with dilute NaOH ?

1

C_{6} H_{5} OH

2

C_{2} H_{5} OH

3

{({CH}_{3})}_{3} COH

4

C_{6} H_{5} {CH}_{2} OH

JEE Main - 2024

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323260 Phenol does not react with

1 Sodium bicarbonate

2 Sodium hydroxide

3 Potassium hydroxide

4 Ferric chloride

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323261 Phenol is less acidic than

1 Ethanol

2 o-nitrophenol

3 o-methylphenol

4 o-methoxyphenol

Explanation:

Due to EWG nature of $- {NO}_{2}$ .

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323262 Mark the correct order of decreasing acid strength of the following compounds.(I)(V)
supporting img

1 V

>

IV

>

II

>

I

>

III

2 II

>

IV

>

III

>

I

>

V

3 IV

>

V

>

III

>

II

>

I

4 V

>

IV

>

III

>

II

>

I

Explanation:

Phenol acidic strength is directly proportional to -I. effect group and inversely proportional to $+ I$ . effect group.

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323263 The correct order of ${pK}_{a}$ values for the following compound is
supporting img

1 A

>

B

>

C

>

D

2 B

>

A

>

D

>

C

3 B

>

D

>

A

>

C

4 C

>

A

>

D

>

B

Explanation:

Higher the value of $K_{a}$ or lower the value of ${pK}_{a}$ , stronger will be the acid.
Presence of electron donating groups reduces acidic nature of phenol. Presence of electron withdrawing group increases the acidic strength of phenol. Thus, order of acidic strength
supporting img

Hence, ${pK}_{a}$ order: $B > D > A > C$ .

JEE - 2023

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323264 Which one the following compounds will readily react with dilute NaOH ?

1

C_{6} H_{5} OH

2

C_{2} H_{5} OH

3

{({CH}_{3})}_{3} COH

4

C_{6} H_{5} {CH}_{2} OH

JEE Main - 2024

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323260 Phenol does not react with

1 Sodium bicarbonate

2 Sodium hydroxide

3 Potassium hydroxide

4 Ferric chloride

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323261 Phenol is less acidic than

1 Ethanol

2 o-nitrophenol

3 o-methylphenol

4 o-methoxyphenol

Explanation:

Due to EWG nature of $- {NO}_{2}$ .

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323262 Mark the correct order of decreasing acid strength of the following compounds.(I)(V)
supporting img

1 V

>

IV

>

II

>

I

>

III

2 II

>

IV

>

III

>

I

>

V

3 IV

>

V

>

III

>

II

>

I

4 V

>

IV

>

III

>

II

>

I

Explanation:

Phenol acidic strength is directly proportional to -I. effect group and inversely proportional to $+ I$ . effect group.

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323263 The correct order of ${pK}_{a}$ values for the following compound is
supporting img

1 A

>

B

>

C

>

D

2 B

>

A

>

D

>

C

3 B

>

D

>

A

>

C

4 C

>

A

>

D

>

B

Explanation:

Higher the value of $K_{a}$ or lower the value of ${pK}_{a}$ , stronger will be the acid.
Presence of electron donating groups reduces acidic nature of phenol. Presence of electron withdrawing group increases the acidic strength of phenol. Thus, order of acidic strength
supporting img

Hence, ${pK}_{a}$ order: $B > D > A > C$ .

JEE - 2023

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323264 Which one the following compounds will readily react with dilute NaOH ?

1

C_{6} H_{5} OH

2

C_{2} H_{5} OH

3

{({CH}_{3})}_{3} COH

4

C_{6} H_{5} {CH}_{2} OH

JEE Main - 2024

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323260 Phenol does not react with

1 Sodium bicarbonate

2 Sodium hydroxide

3 Potassium hydroxide

4 Ferric chloride

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323261 Phenol is less acidic than

1 Ethanol

2 o-nitrophenol

3 o-methylphenol

4 o-methoxyphenol

Explanation:

Due to EWG nature of $- {NO}_{2}$ .

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323262 Mark the correct order of decreasing acid strength of the following compounds.(I)(V)
supporting img

1 V

>

IV

>

II

>

I

>

III

2 II

>

IV

>

III

>

I

>

V

3 IV

>

V

>

III

>

II

>

I

4 V

>

IV

>

III

>

II

>

I

Explanation:

Phenol acidic strength is directly proportional to -I. effect group and inversely proportional to $+ I$ . effect group.

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323263 The correct order of ${pK}_{a}$ values for the following compound is
supporting img

1 A

>

B

>

C

>

D

2 B

>

A

>

D

>

C

3 B

>

D

>

A

>

C

4 C

>

A

>

D

>

B

Explanation:

Higher the value of $K_{a}$ or lower the value of ${pK}_{a}$ , stronger will be the acid.
Presence of electron donating groups reduces acidic nature of phenol. Presence of electron withdrawing group increases the acidic strength of phenol. Thus, order of acidic strength
supporting img

Hence, ${pK}_{a}$ order: $B > D > A > C$ .

JEE - 2023

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323264 Which one the following compounds will readily react with dilute NaOH ?

1

C_{6} H_{5} OH

2

C_{2} H_{5} OH

3

{({CH}_{3})}_{3} COH

4

C_{6} H_{5} {CH}_{2} OH

JEE Main - 2024