Which of the following is the strongest reducing agent?

Identify the correct statements from the following.
$A$: Alkali metals are strong reducing agents.
$B$: $KO_2$ is a diamagnetic oxide.
$C$: Hydration enthalpy of $Li^{+}$ is the highest among alkali metal ions.

When sodium is heated with moist air,the product obtained is:

Give brief information on the atomic and ionic radius of alkali metals (Group $I$).

In certain properties,lithium differs from other alkali metals. The main reason for this is:

What is zeolite among the following?