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Which one of the followingis the most re...

Which one of the followingis the most reactive towards electrophilic attack?

A

B

C

D

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The correct Answer is:
B
`-NO_(2)` group is strongly deactivating, and `-Cl` and `-CH_(2)OH` groups are weakly deactivating but `OH` group is strongly activating thus compound (2) is the most reactive towards electrophilic aromatic substitution.
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