The Mendius reaction is involved in the reduction of which of the following?

The product of the reaction is

Write the structures and $IUPAC$ names of:
$(i)$ the amide which gives propanamine by Hoffmann bromamide reaction
$(ii)$ the amine produced by the Hoffmann degradation of benzamide.

Identify the end product $(B)$ containing nitrogen in the following reaction sequence:

The most suitable reagent for the conversion of $2-$phenylpropanamide into $1-$phenylethylamine is $....$

The most appropriate reagent for the conversion of $C_2H_5CN$ into $CH_3CH_2CH_2NH_2$ is: