By using the moist blue litmus paper, classify the given compounds given below as acids and bases:$\mathrm{Ca}(\mathrm{OH}{)}_2, {\mathrm{H}}_{ 2}{\mathrm{SO}}_4, {\mathrm{CH}}_3\mathrm{COOH}, \mathrm{NaOH} , \mathrm{KOH} , \mathrm{Mg}(\mathrm{OH}{)}_2, {\mathrm{HNO}}_3 , {\mathrm{NH}}_4\mathrm{OH}$

Mention the uses of the following base and mention the property exploited in those uses.

Sodium hydroxide

Mention the uses of the following base and mention the property exploited in those uses.

• Calcium hydroxide

Mention the uses of the following base and mention the property exploited in those uses.

• Magnesium hydroxide