Question Detail
Question
Which of the following compounds reacts least rapidly in electrophilic substitution reactions?
Correct Answer
Option A is the correct answer.
Detailed Explanation
Nitrobenzene reacts least rapidly because the nitro group is strongly deactivating (meta director). Phenol is strongly activating, toluene is activating, and bromobenzene is deactivating but less so than nitrobenzene.
Hint
Which substituent is strongly deactivating?