Which of the following salts does not show its correct nature mentioned against it?

Question

Professor PC Thomas Classes · Answer

(b) : NaCN solution is basic in nature since HCN formed is a weak acid and does not hydrolyse. $ \begin{aligned} & \mathrm{NaCN}+\mathrm{H}_2 \mathrm{O} ightleftharpoons \mathrm{NaOH}+\mathrm{HCN} \ & \mathrm{NaOH} ightleftharpoons \mathrm{Na}^{+}+\mathrm{OH}^{-}(	ext {Basic solution }) \end{aligned} $