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  4. Nitrobenzene on nitration produce :

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Q. Nitrobenzene on nitration produce :

AFMCAFMC 2001

Solution:

$ -NO_{2},-CN,CHO $
$-COR,-COOH,-COOR, $
$ -SO_{3}H $ etc. are meta directing group. These reduce the reactivity of benzene ring through resonance effect by reducing electron density on ortho and para position. Therefore, attack take place on meta position.
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Upon nitration nitrobenzene yield $m$-dinitro- benzene.