Ncert Exercises & Solutions

Which of the following statements is true about $Ca {(OH)}_{2}$ ?

1. It is used in the preparation of bleaching powder

2. It is a light blue solid

3. It does not possess a disinfectant property

4. It is used in the manufacture of cement

Hint: Ca(OH)₂ is white in colour

Calcium hydroxide is used in the manufacture of bleaching powder.

\underset{Slaked}{2 Ca {(OH)}_{2}}

lime + 2 {Cl}_{2} \overset{Cold}{\to} {CaCl}_{2} + \underset{Bleacing}{Ca {(OCl)}_{2}}

powder + 2 H_{2} O