Question

Write chemical formula of Plaster of Paris (POP) and its advantages also.

Answer 1

Chemical formula of Plaster of Paris is $CaS{O}_4.\frac{1}{2}{H}_{2}O$.

Advantages of Plaster of Paris $\to$

1. It as low thermal conductivity.
2. It mixes up easily with water and is easy to spread and level.
   
3. It can easily be moulded into any shape.
   
4. It is very good fire resistant and hence a very good heat insulating material.
   
5. It does not shrink while setting. Thus, it does not develop cracks on heating or setting.