Molecular formula of calgon is $\mathrm{NaAlSiO}_4$.

Beryllium halides are soluble in organic solvents.

Among alkali metals, the reducing property of sodium is least in aqueous solution.

White metal is an alloy of lithium.

$\mathrm{LiO}_2, \mathrm{O}_2, \mathrm{NO}_2$

$\mathrm{Li}_2 \mathrm{O}, \mathrm{O}_2, \mathrm{~N}_2 \mathrm{O}$

$\mathrm{Li}_2 \mathrm{O}, \mathrm{O}_2, \mathrm{~N}_2$

$\mathrm{Li}_2 \mathrm{O}, \mathrm{O}_2, \mathrm{NO}_2$

(A) and (R) are true, (R) is the correct explanation of (A).

(A) and (R) are true, but (R) is not the correct explanation of (A).

(A) is true but (R) is false.

(A) is false but (R) is true.