Which of the following reactions does not produce $H_2$ gas?

Deuterium differs from hydrogen in

If an isotope of hydrogen has two neutrons in its atom,its atomic number and atomic mass number will respectively be

Identify the catalyst $(A)$ used in the following reaction:
$CO + H_2O \rightleftharpoons CO_2 + H_2$

Identify the correct statements from the following.
$(i)$ The number of hydrogen bonded water molecules in copper sulphate pentahydrate is one.
$(ii)$ Lanthanum and zirconium form non-stoichiometric hydrides.
$(iii)$ In solid form of $H_2O$, each oxygen is surrounded by six oxygen in octahedral positions at a distance of $276 \ pm$.

Complete the reaction: $8LiH + Al_2Cl_6 \to ?$