MCQ
If A and Bare supplementary angles, then $\sin ^2 \frac{ A }{2}+\sin ^2 \frac{ B }{2}=$
- A$\frac{1}{2}$
- B0
- ✓1
- D$\frac{1}{3}$
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Arrange the following anions according to the increasing order of their stability.
(I)
$
R-O^{-}
$
Alkoxide anion
Phenoxide anion
(III)