Which blue-colored liquid is obtained upon reacting equimolar amounts of two gases at $-30\,^{\circ}C$?

Which of the following allotropes of phosphorus is the most stable,has a graphite-like structure,and is a conductor of electricity?

On heating ammonium dichromate,the gas evolved is

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

In the hydrides of the nitrogen group,the $H-M-H$ bond angle gradually approaches $90^o$ as we move from $N$ to $Sb$. This indicates that gradually.....

In the following reaction,identify the nature of the products formed by the complete hydrolysis of $\underline{P}_4O_8$ at $R.T$:
$\underline{P}_4O_8 + H_2O \longrightarrow H_3PO_3 + H_3PO_4$