The most dangerous method of preparing hydrogen would be by the action of $HCl$ and

Choose the incorrect statement for deuterium.

Which of the following is an industrial fuel?

The reaction of $H_2S$ with $O_2$ produces .....

On heating,hydrazoic acid forms:

Consider the following sequence of reactions: $Na + NH_{3(g)} \to [X]$ $\xrightarrow{N_2O} [Y]$ $\xrightarrow{\text{Heat}} [Z] (\text{Gas, Pure})$. Identify $[Z]$ gas.