MCQ
Groups that can show both $+\ M$ and $-\ M$ effect :
- Avinyl
- Bphenyl
- C$-\text{NO}$
- ✓All of these
✓
Answer
Correct option: D.
All of these
$\mathrm{CH}_2 = \text{CH}− $ and phenyl both contain double bonds, Since we know $-\text{NO, C}=\text{C}$ both can show $+\ M$ and $-\ M$ effect both hence all of the above options are correct.
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