The correct order of reactivity in electrophilic substitution reaction of the following compounds is : 
- \( B > C > A > D \)
- \( D > C > B > A \)
- \( A > B > C > D \)
- \( B > A > C > D \)
The Correct Option is D
Solution and Explanation
The effect of substituents on electrophilic substitution reactions is as follows:
- \(-\text{CH}_3\) shows \(+M\) and \(+I\).
- \(-\text{Cl}\) shows \(+M\) and \(-I\) but inductive effect dominates.
- \(-\text{NO}_2\) shows \(-M\) and \(-I\).
Electrophilic substitution order is based on \( \alpha + M \) and \( +I \), with the highest reactivity for the methyl group. Hence, order is \( B > A > C > D \).
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