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JEE Main Chemistry question

ChemistryAromatic Compounds and Aryl HalidesJEE Main

In a compound Ph–E, electrophilic substitution has occurred. The substituent E is methyl, –CH₂Cl, –CCl₃ and –CHCl₂ (in various options). The correct increasing order towards electrophilic substitution is

Answer: (D)

Solution

Each additional electronegative chlorine on the side chain withdraws more electron density from the ring (−I effect), progressively deactivating it toward electrophilic substitution.

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Question ID VK-139282