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Question Paper from: IIT JEE Main 2021 TestSeries Paper 2

Among the following compounds I, II, III the correct order of rate of electrophilic substitution is

I = II = III

I > II >III

II > III > I

III < I < II

Solution:

Chapter Name: Reaction Mechanism

Difficulty Level: Moderate

Electron donating substituent attached with benzene ring increases the reactivity of benzene towards electrophilic substitution while withdrawing substituent attached to the benzene ring decreases the reactivity of benzene ring towards electrophilic substitution reaction.

$\to$ -OCH₃ is an electron-donating substituent

$\to$ -NO₂ is an electron with drawing substituent

$\to$ Hence I > II > III

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IIT JEE Main 2021 TestSeries Paper 2

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