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Haloalkanes and Haloarenes

JEE Main 2024 (Online) 8th April Morning ShiftMCQEasy📈 Topic in 31% papers+4−1
Ques. 1JEE Main 2024, 8 April (Morning Shift)

Which among the following compounds will undergo fastest SN2 reaction.

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

Answer

(3) [figure]

Solution

SN2 needs backside attack, so the least hindered C–Br reacts fastest: 1° > 2° > 3°.

(1): Br is on a 2° carbon, so (1) is a 2° bromide

(2): Br is on a 3° carbon, so (2) is a 3° bromide

(3): Br is on a CH2 (1° carbon), so (3) is a 1° bromide, the least hindered

(4): Br is on a 3° ring carbon, so (4) is a 3° bromide

Hence (3) reacts fastest.

Answer: (3)

Keep practising — Haloalkanes and Haloarenes

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

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

  1. Both Statement I and Statement II are false
  2. Statement I is false but Statement II is true
  3. Statement I is true but Statement II is false
  4. Both Statement I and Statement II are true
Ques. 3JEE Main 2024, 6 April (Morning 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-III, B-I, C-IV, D-II
  3. A-III, B-II, C-IV, D-I
  4. A-I, B-II, C-III, D-IV
Ques. 4JEE Main 2024, 6 April (Morning Shift)

The major products from the following reaction sequence are product A and product B. [figure] The total sum of electrons in product A and product B are (nearest integer)

Ques. 5JEE Main 2024, 6 April (Evening Shift)

[figure] Consider the above chemical reaction. Product "A" is :

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

The number of halobenzenes from the following that can be prepared by Sandmeyer's reaction is [figure]

Ques. 7JEE Main 2024, 5 April (Evening Shift)

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

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

[figure] Identify B and C and how are A and C related?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 9JEE Main 2024, 4 April (Morning Shift)

Identify the correct set of reagents or reaction conditions 'X' and 'Y' in the following set of transformation. CH3-CH2-CH2-Br 'X' Product 'Y' CH3- Br |CH-CH3

  1. X = dil.aq. NaOH, 20°C, Y = HBr/ acetic acid
  2. X = conc.alc. NaOH, 80°C, Y = Br2/CHCl3
  3. X = dil.aq. NaOH, 20°C, Y = Br2/CHCl3
  4. X = conc.alc. NaOH, 80°C, Y = HBr/ acetic acid
Ques. 10JEE Main 2024, 4 April (Evening Shift)

[figure] Product P is

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

Find out the major product formed from the following reaction. [Me : –CH3] [figure]

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

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