$NaH$ is an example of:

Given below are two statements:
Assertion $(A)$: Protium and deuterium differ in their rates of reactions.
Reason $(R)$: They have different enthalpies of bond dissociation.
The correct answer is:

Identify the catalyst used in the following reaction: $CO_{(g)} + H_2O_{(g)} \xrightarrow{623 \ K} CO_{2_{(g)}} + H_{2_{(g)}}$

Write the isotopes of hydrogen and specify the number of protons,electrons,and neutrons in each.

Give the chemical reactions for the preparation of water gas and producer gas.

At $298.2 \ K$,the relationship between the enthalpy of bond dissociation (in $kJ \ mol^{-1}$) for hydrogen $(E_{H})$ and its isotope,deuterium $(E_{D})$,is best described by: