Select the correct statement regarding interstitial hydrides.

Which statement is not correct for ortho and para hydrogen?

The hydrides of which group elements of the periodic table form electron-precise hydrides?

When electric current is supplied through an ionic hydride in its fused state,then:

Write a note on covalent or molecular hydrides.

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: