Chemical nature of the nitrogen oxide compound obtained from a reaction of concentrated nitric acid and $P_{4}O_{10}$ (in $4:1$ ratio) is:

In the following reaction,identify the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T.$:
$\underline{N}F_3 + H_2O \longrightarrow \text{No reaction}$

Which of the following compounds does not produce ammonia upon heating?

Which of the following is used as an anesthetic?

At what temperature is white phosphorus heated to form $\beta$-black phosphorus (in $K$)?

In the electrothermal process,the compound displaced by silica from calcium phosphate is