Identify from the following salts an example of a salt of a strong acid and a weak base.

Match the column $I$ with column $II$ and mark the appropriate choice.

Column $I$	Column $II$
$A$. $CH_3COONa$	$i$. Almost neutral,$pH > 7$ or $< 7$
$B$. $NH_4Cl$	$ii$. Acidic,$pH < 7$
$C$. $NaNO_3$	$iii$. Alkaline,$pH > 7$
$D$. $CH_3COONH_4$	$iv$. Neutral,$pH = 7$

The degree of hydrolysis of a salt of weak acid and weak base in its $0.1 \, M$ solution is found to be $50 \%$. If the molarity of the solution is $0.2 \, M$,the percentage hydrolysis of the salt should be $...... \%$.

For a weak acid $HX$ with $K_a = 1 \times 10^{-5}$,the reaction with $NaOH$ gives $NaX$. What is the percentage of hydrolysis $(\% \, h)$ for a $0.1 \, M$ aqueous solution of $NaX$?

Which of the following $0.1 \ M$ solutions of compounds will be basic in nature?

Which among the following salts turns red litmus blue in its aqueous solution?