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Alcohols, Phenols and Ethers

JEE Main 2024 (Online) 29th January Evening ShiftMCQEasy📈 Topic in 22% papers+4−1
Ques. 1JEE 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

Answer

(3) 2-Hydroxybenzaldehyde

Solution

Reimer–Tiemann reaction:

[figure]

∵ dichlorocarbene (:CCl2) attacks the ortho position of phenoxide; the -CHCl2 group is hydrolysed to –CHO.

(1): salicylic acid ⇒ needs CCl4/NaOH or CO2 (Kolbe) ⇒ (1) is wrong

(2), (4): diols ⇒ no second –OH is introduced ⇒ (2), (4) are wrong

Answer: (3)

Keep practising — Alcohols, Phenols and Ethers

Ques. 2JEE 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. 3JEE 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. 4JEE 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. 5JEE 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. 6JEE 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. 7JEE 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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