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1
JEE Main 2026 (Online) 22nd January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct order of the rate of reaction of the following reactants with nucleophile by $\mathrm{S}_{\mathrm{N}} 1$ mechanism is :

(Given : Structures I and II are rigid)

JEE Main 2026 (Online) 22nd January Morning Shift Chemistry - Haloalkanes and Haloarenes Question 12 English
A

I $<$ II $<$ III $<$ IV

B

II $<$ I $<$ III $<$ IV

C

III $<$ I $<$ II $<$ IV

D

IV $<$ III $<$ II $<$ I

2
JEE Main 2026 (Online) 22nd January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct order of reactivity of $\mathrm{CH}_3 \mathrm{Br}$ in methanol with the following nucleophiles is

$\mathrm{F}^{-}, \mathrm{I}^{-}, \mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{-}$and $\mathrm{C}_6 \mathrm{H}_5 \mathrm{O}^{-}$

A

$\mathrm{I}^{-}>\mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{-}>\mathrm{C}_6 \mathrm{H}_5 \mathrm{O}^{-}>\mathrm{F}^{-}$

B

$\mathrm{I}^{-}>\mathrm{F}^{-}>\mathrm{C}_6 \mathrm{H}_5 \mathrm{O}^{-}>\mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{-}$

C

$\mathrm{I}^{-}>\mathrm{C}_6 \mathrm{H}_5 \mathrm{O}^{-}>\mathrm{F}^{-}>\mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{-}$

D

$\mathrm{I}^{-}>\mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{-}>\mathrm{F}^{-}>\mathrm{C}_6 \mathrm{H}_5 \mathrm{O}^{-}$

3
JEE Main 2026 (Online) 21st January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct order of the rate of the reaction for the following reaction with respect to nucleophiles is :

${CH_3Br + Nu^- \longrightarrow CH_3Nu + Br^-}$

A

${ClO_4^- > CH_3COO^- > OH^- > PhO^-}$

B

${OH^- > PhO^- > CH_3COO^- > ClO_4^-}$

C

${CH_3COO^- > PhO^- > OH^- > ClO_4^-}$

D

${PhO^- > OH^- > CH_3COO^- > ClO_4^-}$

4
JEE Main 2026 (Online) 21st January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

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

JEE Main 2026 (Online) 21st January Evening Shift Chemistry - Haloalkanes and Haloarenes Question 16 English
A

a > b > c > d

B

b > a > d > c

C

b > a > c > d

D

a > b > d > c

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