$CH_3CONH_2$ $\xrightarrow{PCl_5} A$ $\xrightarrow{Na/EtOH} B$. What is reaction $II$ called?

In a set of reactions,$m$-bromobenzoic acid gives a product $D$. Identify the product $D$.

Write chemical equations for the following conversions:
$(i)$ $CH_3-CH_2-Cl$ into $CH_3-CH_2-CH_2-NH_2$
$(ii)$ $C_6H_5-CH_2-Cl$ into $C_6H_5-CH_2-CH_2-NH_2$

What is the number of moles of $H$ atoms required to prepare one mole of ethylamine from one mole of acetamide?

Identify product $B$ obtained in the following reaction: $CH_{3}CH_{2}NO_{2}$ $\xrightarrow[\Delta]{HNO_{2}} A$ $\xrightarrow{LiAlH_{4}} \text{ether} B$

An aromatic compound '$A$' on treatment with aqueous ammonia and heating forms compound '$B$',which on heating with $Br_2$ and $KOH$ forms a compound $C$ of molecular formula $C_6H_7N$. The structures of compound $A, B$ and $C$ are respectively: