How many of the following groups if substituted at $o-$ and / or $p-$ positions of chlorobenzene, increase its reactivity towards nucleophilic substitution?
$- CN, - {CH}_{3} - NH ({CH}_{3}), - COOH, - {NO}_{2}, - {OCH}_{3}$

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TestHub · Accepted Answer

The presence of electron-withdrawing groups (like - CN , - COOH , - NO 2 ) at o- and p- positions with respect to halogen atom activates the aryl halide towards nucleophilic substitution reactions.

Chemistry - Halogen Derivative Question with Solution | TestHub

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