Select the reagents that reduce nitriles to primary amines.

A. (i) $\mathrm{LiAlH}_4$; (ii) $\mathrm{H}_2 \mathrm{O}$

B. $\mathrm{Sn}+\mathrm{HCl}$

C. $\mathrm{H}_2 / \mathrm{Ni}$

D. $\mathrm{Na}(\mathrm{Hg}) / \mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}$

E. $\mathrm{Br}_2 / \mathrm{aq} . \mathrm{NaOH}$

Choose the correct answer from the options given below.

$$ \begin{aligned} &\text { The following two reactions give the same foul smelling product } Z \text {. }\\ &\mathrm{C}_2 \mathrm{H}_5 \mathrm{Cl} \xrightarrow{\mathrm{X}} \mathrm{Z} \end{aligned} $$

$X$ and $Z$, respectively, are :

$$ \text { Two products } X \text { and } Y \text { are formed in the following reaction sequence. } $$

The suitable method that can be used for the separation of products X and Y is :

The major product Z formed in the following sequence of reactions is