The action of nitrous acid on ethyl amine gives

What is formed by the reaction of $p$-toluidine with chloroform and alcoholic $KOH$?

The end product of the reactions is
$C_2H_5NH_2$ $\xrightarrow{HNO_2} A$ $\xrightarrow{PCl_5} B$ $\xrightarrow{NH_3} C$

What is the correct order of basicity for the following compounds?
$1$. $C_6H_5NH_2$ (Aniline)
$2$. $CH_3CH_2NH_2$ (Ethylamine)
$3$. $(CH_3)_2NH$ (Dimethylamine)
$4$. $CH_3CONH_2$ (Acetamide)

Which of the following is the correct order for basic strength?

Which one of the following will give a primary amine on hydrolysis?