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Alcohols, Phenols and Ethers

JEE Main 2024 (Online) 8th April Morning ShiftMCQEasy📈 Topic in 5% papers+4−1
Ques. 1JEE Main 2024, 8 April (Morning Shift)

Identify the major products A and B respectively in the following set of reactions. [figure]

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

Answer

(2) [figure]

Solution

[figure]

Conc. H2SO4 dehydrates the alcohol by E1 through the 3° carbocation; by Saytzeff rule the more substituted (endocyclic) alkene is the major product A.

[figure]

CH3COCl acetylates the O–H (ester formation) and pyridine removes HCl, so B is the acetate ester.

(1): exocyclic =CH2 alkene and a C-acetyl compound, so (1) is wrong

(2): endocyclic alkene A and the ester B, so (2) is correct

(3): exocyclic alkene and a C-acetyl compound, so (3) is wrong

(4): A is right but B is a C-acetyl compound, not the ester, so (4) is wrong

Answer: (2)

Keep practising — Alcohols, Phenols and Ethers

Ques. 2JEE Main 2024, 8 April (Evening Shift)

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

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

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

  1. C6H5CH2OH
  2. C2H5OH
  3. C6H5OH
  4. (CH3)3COH
Ques. 4JEE Main 2024, 6 April (Morning Shift)

In Reimer - Tiemann reaction, phenol is converted into salicylaldehyde through an intermediate. The structure of intermediate is .

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 5JEE Main 2024, 6 April (Morning Shift)

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

  1. Statement I is incorrect but Statement II is correct
  2. Both Statement I and Statement II are incorrect
  3. Both Statement I and Statement II are correct
  4. Statement I is correct but Statement II is incorrect
Ques. 6JEE Main 2024, 6 April (Evening Shift)

Identify the product A in the following reaction. [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 7JEE Main 2024, 6 April (Evening Shift)

The major products formed : [figure] A and B respectively are :

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 8JEE Main 2024, 6 April (Evening Shift)

[figure] The ratio of number of oxygen atoms to bromine atoms in the product Q is 10-1.

Ques. 9JEE Main 2024, 5 April (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. Statement I is false but Statement II is true
  4. Both Statement I and Statement II are false
Ques. 10JEE Main 2024, 5 April (Morning Shift)

Identify compound (Z) in the following reaction sequence. [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 11JEE Main 2024, 5 April (Morning Shift)

Consider the given chemical reaction sequence : [figure] Total sum of oxygen atoms in Product A and Product B is .

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