Atomic weight of the isotope of hydrogen which contains $2$ neutrons in the nucleus would be

Discuss the consequence of high enthalpy of $H-H$ bond in terms of chemical reactivity of dihydrogen.

What is the formula of hydrolith?

Given below are two reactions involved in the commercial production of dihydrogen $(H_2)$. The two reactions are carried out at temperatures $T_1$ and $T_2$ respectively:
$C_{(s)} + H_2O_{(g)} \xrightarrow{T_1} CO_{(g)} + H_{2(g)}$
$CO_{(g)} + H_2O_{(g)} \xrightarrow{T_2} CO_{2(g)} + H_{2(g)}$
The temperatures $T_1$ and $T_2$ are correctly related as:

Which of the following is a hydride?

Which of the following substances does not release $O_2$ and acts as a dehydrating agent?