Q.
Consider the following reaction sequence.
$CH_3C \equiv CH \ce{->[aq. H_2SO_4][HgSO_4]} A \ce{->[PCl_5][\text{heat}]} B$
The product (A) and (B) are, respectively :
Solution:
Correct answer is (a) $CH_3COCH_3$ and $CH_3CCl_2CH_3$
