Increasing order of the following for the electrophilic substitution reaction as:-

I < II < III

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III < I < II

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III < II < I

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II < I < III

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Solution

The correct option is C III < II < I
The increasing order of the electrophillic substitution reaction is $I I I < I I < I$ .

Benzoic acid has least reactivity due to presence of strong electron withdrawing carboxylic group which decreases the electron density of benzene ring and deactivates it towards electrophilic aromatic substitution reaction.

Toluene has maximum reactivity for electrophilic substitution reaction as it increases the electron density of the ring and activates it towards electrophilic aromatic substitution reaction.

Option C is correct.

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