Among $NH_3$,$PH_3$,$AsH_3$,and $SbH_3$,which one is a stronger reducing agent?

Which of the following is not hydrolysed?

Identify the reactions in which $N_2$ is liberated.
$a. \ (NH_4)_2SO_4 + NaOH \longrightarrow$
$b. \ NH_3 + Cl_2 \longrightarrow$ (excess $Cl_2$ is not specified, but $N_2$ is formed when $NH_3$ is in excess)
$c. \ (NH_4)_2Cr_2O_7 \xrightarrow{\Delta}$
$d. \ NH_4NO_3 \xrightarrow{\Delta}$
$e. \ NH_4Cl_{(aq)} + NaNO_{2_{(aq)}} \longrightarrow$

In the following reaction,identify the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T.$:
$\underline{N}Cl_3 + 3H_2O \longrightarrow 3HOCl + NH_3$

Sodium nitrite with hydrochloric acid gives water along with two nitrogen oxides. They are

The correct order of reducing abilities of hydrides of $V$ group elements is