What is the $P-P-P$ bond angle in white phosphorus?

The oxide,which is neither acidic nor basic is

The total number of $\sigma$ and $\pi$-bonds in pyrophosphoric acid are respectively

In $P_4O_6$,how many oxygen atoms are attached to each phosphorus atom?

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:

The number of $P-H$,$P-O-P$,$P-O-H$ and $P=O$ bonds in sodium dihydrogen pyrophosphate $(Na_2H_2P_2O_7)$ are respectively: