Tritium undergoes radioactive decay giving

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:

The shape of the colourless neutral gas formed on thermal decomposition of ammonium nitrate is

Which of the following acids does not produce $H_2$ gas upon reaction with alkali metals?

Give the chemical reaction for the preparation of producer gas.

Number of neutrons in a heavy hydrogen atom is