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Alcohols, Phenols and Ethers

JEE Main 2024 (Online) 29th January Morning ShiftMCQMedium📈 Topic in 10% papers+4−1
Ques. 1JEE Main 2024, 29 January (Morning Shift)

The major product(P) in the following reaction is [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]

Answer

(3) [figure]

Solution

Excess HBr reacts at both groups:

1. Ether: Ar-O-C2H5 + HBr Ar-OH + C2H5Br

∵ Ar–O bond has partial double-bond character (resonance), so Br- attacks the ethyl carbon; the phenol –OH is not replaced by Br.

2. Vinyl group (Markovnikov, via the more stable benzylic carbocation):

Ar-CH=CH2 + H+ Ar- CH-CH3

Ar- CH-CH3 + Br- Ar-CHBr-CH3

[figure]

Answer: (3)

Keep practising — Alcohols, Phenols and Ethers

Ques. 2JEE Main 2024, 29 January (Evening Shift)

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

  1. Salicylic acid
  2. Benzene-1,2-diol
  3. 2-Hydroxybenzaldehyde
  4. Benzene-1,3-diol
Ques. 3JEE Main 2024, 29 January (Evening Shift)

Match List I with List II Choose the correct answer from the options given below:

  1. A-I, B-II, C-III, D-IV
  2. A-IV, B-I, C-II, D-III
  3. A-II, B-I, C-IV, D-III
  4. A-III, B-IV, C-I, D-II
Ques. 4JEE Main 2024, 27 January (Morning Shift)

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

  1. Statement I is true but Statement II is false
  2. Both Statement I and Statement II are true
  3. Both Statement I and Statement II are false
  4. Statement I is false but Statement II is true
Ques. 5JEE Main 2024, 27 January (Morning Shift)

The ascending order of acidity of -OH group in the following compounds is : [figure] Choose the correct answer from the options given below:

  1. (A) < (D) < (C) < (B) < (E)
  2. (C) < (A) < (D) < (B) < (E)
  3. (C) < (D) < (B) < (A) < (E)
  4. (A) < (C) < (D) < (B) < (E)
Ques. 6JEE Main 2024, 27 January (Evening Shift)

Major product formed in the following reaction is a mixture of : [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 7JEE Main 2024, 27 January (Evening Shift)

Match List - I with List - II. Choose the correct answer from the options given below :

  1. (A)-(II), (B)-(I), (C)-(III), (D)-(IV)
  2. (A)-(IV), (B)-(I), (C)-(III), (D)-(II)
  3. (A)-(IV), (B)-(III), (C)-(I), (D)-(II)
  4. (A)-(II), (B)-(III), (C)-(I), (D)-(IV)
Ques. 8JEE Main 2024, 27 January (Evening Shift)

The final product A, formed in the following reaction sequence is: [figure]

  1. [figure]
  2. [figure]
  3. Ph-CH2-CH2-CH2-OH
  4. Ph-CH2-CH2-CH3

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