$P_4O_{10}$ cannot be used to dry $NH_3$ because ..............

On reaction with $Cl_2$,phosphorus forms two types of halides $A$ and $B$. Halide $A$ is a yellowish-white powder,while halide $B$ is a colourless oily liquid. Identify $A$ and $B$ and write the formulas of their hydrolysis products.

Which of the following oxides of nitrogen is isoelectronic with $CO_2$?

$NH_3 + O_2 \xrightarrow{\text{Catalyst}} NO + H_2O$. This step is used in which process?

The product formed in the reaction of $SOCl_2$ with white phosphorus is:

$PbO_2$ is