Which of the following compounds is the most explosive?

In the $15^{th}$ group of the periodic table,the elements $N, P, As, Sb$,and $Bi$ are present. As we move from $N$ to $Bi$,how do the oxides with the general formula change?

Which of the following properties is true for the given sequence? $NH_{3} > PH_{3} > AsH_{3} > SbH_{3} > BiH_{3}$

Heating of ammonium dichromate produces

Red phosphorus can be obtained from white phosphorus by:

Statement $(A)$: Among the oxides of nitrogen, $NO$ and $NO_2$ are paramagnetic.
Statement $(B)$: $NO$ is paramagnetic in the gaseous state and diamagnetic in the liquid state.
The correct answer is: