When a primary amine is heated with $NaNO_2/HCl$,a gas is evolved with brisk effervescence. Identify the gas.
$R-NH_2 \xrightarrow{NaNO_2/HCl} ..................$

In the chemical reaction $CH_3CH_2NH_2 + CHCl_3 + 3KOH \rightarrow (a) + (b) + 3H_2O$,what are the products $(a)$ and $(b)$ respectively?

The major product in the following reaction is:

Amines are basic in nature because:

Identify the products $y$ and $x$ in the following reaction sequence:
$C_6H_5CONH_2 \xrightarrow{NaOBr} y$
$C_6H_5CONH_2 \xrightarrow[(ii) H_3O^+]{(i) C_6H_5SO_2Cl / py, \Delta} x$

Consider the following sequence of reactions. The percentage of nitrogen in the yellow product $(X)$ formed is . . . . . . %. (Nearest Integer) (Given Molar mass in g mol$^{-1}$ $H$:$1$, $C$:$12$, $N$:$14$)