1.

Which of the following have `-M` effect (`overline e` - withdrawing mesomeric effect) ?A. B. `- SO_3H`C. `-OR`D. `-Br`

Answer» Correct Answer - A::B
(a,b) Here `(a)` and `(b)` do not have `LP overline e^, s`, but `( c)` and `(d)` have `-ddotunderset(..)OR,-ddotunderset(..)Br:`


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