$C_6H_5CHO + HCN \to C_6H_5-CH(OH)-CN$. The product would be

The reaction involving the reduction of a ketone to an alkane using zinc amalgam $(Zn-Hg)$ and concentrated hydrochloric acid $(HCl)$ is known as:

Which of the following is not true about acetophenone?

The major products $A$ and $B$ for the following reactions are,respectively:

What is the main product obtained by the cross-aldol condensation of benzene carbaldehyde and $1$-phenyl ethane$-1$-one?

The best reagent to carry out the following conversion is:
$3$-hydroxyethylcyclopentane-$1$-carbaldehyde $\rightarrow$ $1$-ethyl-$3$-methylcyclopentane (with a hydroxy group on the ethyl side chain).
(Note: The image shows the reduction of an aldehyde group $-CHO$ to a methyl group $-CH_3$ while keeping the secondary alcohol $-CH(OH)CH_3$ intact.)