JEE Main 2020ChemistryHaloalkanes and HaloarenesMediumMCQ

JEE Main 2020 — Haloalkanes and Haloarenes Question with Solution

JEE Main 2020 (03 Sep Shift 2)

Question

The decreasing order of reactivity of the following compounds towards nucleophilic substitution (SN2) is:

Choose an option

Show full solutionCorrect option: B
Correct answer
B(II) > (III) > (IV) > (I)

Step-by-step explanation

Rate of SN2 reation α Electrophilicity of alkyl carbon α 1Steric crowding on R-X

SN2 reaction depend upon -I, -M, effect.-I,-M group increases the rate of SN2 reaction.

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About this question

This is a previous-year question from JEE Main 2020, covering the Haloalkanes and Haloarenes chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.