Assertion : 0.20 M solution of $\mathrm{NaCN}<mspace\; width="1em"></mspace>$is more basic than 0.20 M solution of $\mathrm{NaF}$.

Reason : 0.20 M solution of $\mathrm{NaCN}<mspace\; width="1em"></mspace>$ is more basic than 0.20 M solution of ${\mathrm{CH}}_3\mathrm{COONa}.$

Assertion: A substance that can either act as an acid or a base is called ampholyte.

Reason: Bisulphide ion $\left({\mathrm{HS}}^{-}\right)$ and bicarbonate ion $\left({{\mathrm{HCO}}_3}^{-}\right)$ are ampholytes.