Of the following, four groups are m-directing when present on a benzene ring. The one which is not meta-directing is:

- C O O H

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- {N O}_{2}

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- C H O

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- {N H}_{2}

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- C O O {C H}_{3}

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Solution

The correct option is C $- {N H}_{2}$
$- {N H}_{2}$ group (ERG) is $o, p$ -directing, while others (EWG) are $m - d i r e c t i n g .$
Hence option (D) is correct.

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Similar questions

Q. Out of the following how many groups are meta directing on electrophilic substitution of benzene?

- C O O H, - C N, - N H_{2} - C O C H_{3}, - N H C O C H_{3}, - O H, - C H O, - S O_{3} H, - C l, - N O_{2}

Q. Assertion (A) : Nitro benzene on nitration gives m-dinitro benzene.
Reason (R) :

N O_{2}

group is meta directing group.

Q. Which of the following groups when attached to benzene ring exerts deactivating meta directing effect?

Assertion (A): - $N O_{2}$ group is benzene ring deactivating and m - directing group

Reason (R): - $N O_{2}$ group with draws electron density from benzene ring and makes ortho and para positions more electron deficient than meta position

Q. Which of the following Benzene rings contain o-p directing groups ?

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Of the following, four groups are m-directing when present on a benzene ring. The one which is not meta-directing is:

The correct option is C −NH2−NH2 group (ERG) is o,p-directing, while others (EWG) are m−directing.Hence option (D) is correct.

The correct option is C $- {N H}_{2}$
$- {N H}_{2}$ group (ERG) is $o, p$ -directing, while others (EWG) are $m - d i r e c t i n g .$
Hence option (D) is correct.