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JEE Main2026Jan 24, Shift 1Chemistry
Q.

Given below are two statements :

Statement I : 'C–Cl' bond is stronger in than

Statement II : The given optically active molecule, on hydrolysis gives a solution that can rotate the plane polarized light.

In the light of the above statements, choose the correct answer from the options given below

  1. A

    Statement I is false but Statement II is true

  2. B

    Both Statement I and Statement II are true

  3. C

    Both Statement I and Statement II are false

  4. D

    Statement I is true but Statement II is false

Solution

Statement I: In vinyl chloride (), the lone pair on Cl conjugates with the -system of the double bond, giving the C–Cl bond partial double-bond character. This makes it shorter and stronger than the C–Cl bond in ethyl chloride (). True.

Statement II: The chiral alkyl halide shown undergoes hydrolysis via a planar carbocation intermediate, which is attacked equally from either face by water. This produces equal amounts of the two enantiomeric alcohols — a racemic mixture, which is optically inactive (cannot rotate plane-polarised light). False.

Statement I is true but Statement II is false.

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