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Haloalkanes and Haloarenes

JEE Main 2026 (Online) 22nd January Morning ShiftMCQEasy📈 Topic in 2% papers+4−1
Ques. 1JEE Main 2026, 22 January (Morning Shift)

As compared with chlorocyclohexane, which of the following statements correctly apply to chlorobenzene? Choose the correct answer from the options given below :

  1. B, C and E Only
  2. A, C and E Only
  3. B, C and D Only
  4. A, D and E Only

Answer

(1) B, C and E Only

Solution

In chlorobenzene a lone pair of Cl is delocalised into the ring (resonance) and the C–Cl carbon is sp2 hybridised; in chlorocyclohexane the carbon is sp3 and there is no resonance.

A. Resonance moves electron density from Cl towards the ring the negative charge on Cl is less. Incorrect.

B. Resonance gives the C–Cl bond partial double bond character. Correct.

C. sp2 carbon is more electronegative and Cl donates electrons by resonance the C–Cl bond is less polar (dipole moment of chlorobenzene 1.69 D, lower than that of chlorocyclohexane). Correct.

D. Partial double bond character and the smaller sp2 carbon make the C–Cl bond shorter (169 pm in chlorobenzene against 177 pm in an alkyl chloride), not longer. Incorrect.

E. The C–Cl bond uses an sp2 hybrid orbital of carbon. Correct.

B, C and E only.

Answer: (1)

Keep practising — Haloalkanes and Haloarenes

Ques. 2JEE Main 2026, 22 January (Morning Shift)

The correct order of the rate of reaction of the following reactants with nucleophile by SN1 mechanism is : (Given : Structures I and II are rigid) [figure]

  1. I < II < III < IV
  2. II < I < III < IV
  3. III < I < II < IV
  4. IV < III < II < I
Ques. 3JEE Main 2026, 22 January (Morning Shift)

The correct order of reactivity of CH3Br in methanol with the following nucleophiles is F-, I-, C2H5O- and C6H5O-

  1. I- > C2H5O- > C6H5O- > F-
  2. I- > F- > C6H5O- > C2H5O-
  3. I- > C6H5O- > F- > C2H5O-
  4. I- > C2H5O- > F- > C6H5O-
Ques. 4JEE Main 2026, 21 January (Evening Shift)

The correct order of the rate of the reaction for the following reaction with respect to nucleophiles is : CH3Br + Nu- CH3Nu + Br-

  1. ClO4- > CH3COO- > OH- > PhO-
  2. OH- > PhO- > CH3COO- > ClO4-
  3. CH3COO- > PhO- > OH- > ClO4-
  4. PhO- > OH- > CH3COO- > ClO4-
Ques. 5JEE Main 2026, 21 January (Evening Shift)

The correct order of reactivity of the following benzyl halides towards reaction with KCN is : [figure]

  1. a > b > c > d
  2. b > a > d > c
  3. b > a > c > d
  4. a > b > d > c
Ques. 6JEE Main 2025, 7 April (Morning Shift)

The reactions which cannot be applied to prepare an alkene by elimination, are Choose the correct answer from the options given below:

  1. B & E Only
  2. B, C & D Only
  3. A, C & D Only
  4. B & D Only
Ques. 7JEE Main 2025, 7 April (Evening Shift)

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

  1. A-II, B-III, C-I, D-IV
  2. A-III, B-IV, C-II, D-I
  3. A-IV, B-III, C-I, D-II
  4. A-IV, B-III, C-II, D-I
Ques. 8JEE Main 2025, 4 April (Evening Shift)

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

  1. Both Statement I and Statement II are incorrect
  2. Both Statement I and Statement II are correct
  3. Statement I is incorrect but Statement II is correct
  4. Statement I is correct but Statement II is incorrect
Ques. 9JEE Main 2025, 3 April (Evening Shift)

In the following series of reactions identify the major products A & B respectively : [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 10JEE Main 2025, 2 April (Evening Shift)

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

  1. (A)-(III), (B)-(II), (C)-(IV), (D)-(I)
  2. (A)-(IV), (B)-(III), (C)-(I), (D)-(II)
  3. (A)-(IV), (B)-(I), (C)-(II), (D)-(III)
  4. (A)-(III), (B)-(IV), (C)-(II), (D)-(I)
Ques. 11JEE Main 2025, 2 April (Evening Shift)

[figure] Consider the above sequence of reactions. 151 g of 2-bromopentane is made to react. Yield of major product P is 80\% whereas Q is 100\%. Mass of product Q obtained is g. (Given molar mass in g mol-1 H : 1, C : 12, O : 16, Br : 80)

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