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(B) Meta-directing groups are those that withdraw electron density from the benzene ring through the inductive effect or resonance,making the ring les

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$4$

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(B) Meta-directing groups are those that withdraw electron density from the benzene ring through the inductive effect or resonance,making the ring less reactive towards electrophilic substitution and directing the incoming electrophile to the meta position.From the given list:$1$. $-NO_2$ (Nitro group): Meta-directing$2$. $-CN$ (Cyano group): Meta-directing$3$. $-COR$ (Acyl group): Meta-directing$4$. $-COOH$ (Carboxyl group): Meta-directingThe groups $-OCH_3$,$-CH_3$,$-NHCOCH_3$,$-OH$,and $-Cl$ are ortho/para-directing.Thus,the total number of meta-directing groups is $4$.

Among the following,the total number of meta-directing functional groups is $ . . . . . . $ (Integer based).
$-OCH_3, -NO_2, -CN, -CH_3, -NHCOCH_3, -COR, -OH, -COOH, -Cl$

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Among the following,the total number of meta-directing functional groups is $ . . . . . . $ (Integer based).$-OCH_3, -NO_2, -CN, -CH_3, -NHCOCH_3, -COR, -OH, -COOH, -Cl$