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JEE Main 202622 JanuaryMorning Shift

Exam: JEE Main
Year: 2026
Date: 22 January
Shift: Morning Shift
Subject: Chemistry
Chapter: Haloalkanes and Haloarenes

JEE Main 2026 · 22 January · Morning Shift · Chemistry · Haloalkanes and Haloarenes

The correct order of the rate of reaction of the following...

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

The correct order of the rate of reaction of the following reactants with nucleophile by SN1 mechanism is: (Given :

Options

AIII $<$ I $<$ II $<$ IV
BIV $<$ III $<$ II $<$ I
CI $<$ II $<$ III $<$ IV
DII $<$ I $<$ III $<$ IV

Correct answer

D. II $<$ I $<$ III $<$ IV

Step-by-step solution

Rate of

S_N1 \propto

Stability of

C^{\oplus}

formed
(I) and (II) are unstable due to Bredt's rule, (I) has more +I effect.
(II) < (I) < (III) < (IV)

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