Which gas/gases evolve$(s)$ when sodium metal is reacted with water at room temperature?

When $CO$ is passed over solid $NaOH$ heated to $200\,^{\circ}C$,it forms

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.

Which one of the following statements is not correct?

From the following,which group of elements easily forms a cation?

Which one of the following options is correct pertaining to the below transformations?
$Na + NH_{3(l)} \longrightarrow$ Coloured solution $\xrightarrow{\text{on standing}} X + Y$