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Haloalkanes and Haloarenes

JEE Main 2026 (Online) 24th January Morning ShiftMCQEasy📈 Topic in 5% papers+4−1
Ques. 1JEE Main 2026, 24 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 false but Statement II is true
  2. Statement I is true but Statement II is false
  3. Both Statement I and Statement II are true
  4. Both Statement I and Statement II are false

Answer

(2) Statement I is true but Statement II is false

Solution

Statement I: In vinyl chloride the lone pair of Cl is in resonance with the C=C bond:

CH2=CH- Cl: CH2-CH= Cl

so the C–Cl bond gets partial double bond character. Also the carbon is sp2 hybridised (more s-character, more electronegative) and holds Cl more tightly than the sp3 carbon of CH3-CH2-Cl. Hence the C–Cl bond is shorter and stronger in CH2=CH-Cl, and Statement I is true.

Statement II: The given compound (2-chloro-2-phenylbutane) is a tertiary benzylic halide, so it is hydrolysed by the SN1 mechanism through a planar, resonance-stabilised benzylic carbocation C6H5 C(CH3)C2H5.

Water attacks this planar carbocation equally from both faces, giving equal amounts of the two enantiomers of 2-phenylbutan-2-ol (racemisation). The racemic mixture formed is optically inactive and does not rotate plane polarised light, so Statement II is false.

Answer: (2)

Keep practising — Haloalkanes and Haloarenes

Ques. 2JEE Main 2026, 24 January (Morning Shift)

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

  1. A-III, B-IV, C-I, D-II
  2. A-IV, B-I, C-III, D-II
  3. A-III, B-IV, C-II, D-I
  4. A-I, B-II, C-IV, D-III
Ques. 3JEE 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
Ques. 4JEE 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. 5JEE 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. 6JEE 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. 7JEE 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. 8JEE 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. 9JEE 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. 10JEE 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. 11JEE 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]

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