$A$ solution of sodium acetate in water will

If the $pK_b$ for $CN^-$ is $4.7$ at $25\,^oC$,then the $pH$ of a $0.5\,M \,NaCN$ solution is:

What will be the $pH$ and $\alpha$ (degree of hydrolysis) respectively for the salt $BA$ of $0.1 \ M$ concentration? (Given: $K_a$ for $HA = 10^{-6}$ and $K_b$ for $BOH = 10^{-6}$)

Predict if the solutions of the following salts are neutral,acidic,or basic: $NaCl, KBr, NaCN, NH_4NO_3, NaNO_2$ and $KF$.

$A$ solution of sodium cyanide $(NaCN)$ is . . . . . . .

Which among the following is $NOT$ an example of a salt of a strong acid and a weak base?