JEE Main 2020 — Haloalkanes And Haloarenes Question with Solution
From: JEE Main 2020 (Online) 3rd September Evening Slot
Question
The decreasing order of reactivity of the
following compounds towards nucleophilic
substitution (SN2) is :
This question includes a diagram. The text above accompanies the figure.
Choose an option
Show full solutionCorrect option: D
Correct answer
D(III) > (II) > (IV) > (I)
Step-by-step explanation
–NO2 group present at ortho and para position deactivate the benzene ring and making the carbon attached to ring (–CH2Cl) group more electrophilic for the incoming nucleophile to give SN2 reaction but rate of SN2 reaction decreases as hindrence increases around the electrophilic carbon.
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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.