In the reaction,$C_6H_5COCH_3 \xrightarrow[Zn-Hg / \text{conc. } HCl]{[H]} X$,$X$ is

An alkene $A$ $(C_4H_8)$ exhibits cis/trans isomerism. $A$ on ozonolysis gives $B$,which when reacted with $NaOH$ followed by hydroxylamine gives $C$. What are $B$ and $C$?

In the following reaction:
$\text{Carbonyl compound} + MeOH \xleftarrow[HCl]{} \text{acetal}$
The rate of the reaction is the highest for:

Which of the following compounds undergoes the Cannizzaro reaction?

Methyl vinyl ketone on reaction with $LiCuMe_2$ gives a major product,whose structure is

In the following reactions,products $A$ and $B$ are