The product $(X)$ of the following reaction is:

The reagent used in the Wolff-Kishner reduction is

The addition of $HCN$ to carbonyl compounds is an example of

The product $(A)$ of the following reaction is (bromination does not occur in the benzene ring):

$C_2H_5CHO$ and $(CH_3)_2CO$ can be distinguished by testing with

Compound $x$ having molecular formula $C_3H_6O$ is reduced by Red $P/HI$ to give compound $y$ $(C_3H_8)$. Since $x$ reduces Tollen's reagent,what is the possible structure of $x$?