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QAIPM-2000-Ch-2993: NEET 2000 Chemistry - Class 11 AIPM-2000-Ch-2993 Solution: Increasing order of electrophilic substitution for following…

Increasing order of electrophilic substitution for following compounds

Multiple Choice Options

A $IV<I<II<III$
B $III<II<I<IV$
C $I<IV<III<II$
D $II<III<I<IV$

Step-by-Step Verified Solution

Among �CH 3 , �OCH 3 and CF 3 , CH 3 and �OCH 3 are electron donating groups. Hence, they activate the benzene ring. In these the order of activation is �OCH 3 > �CH 3 while �CF 3 group deactivates the benzene nucleus. So, it shows lower rate of electrophilic substitution on benzene ring. Thus, order of electrophilic substitution is :

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