Name the product obtained when Plaster of Paris is mixed with water. State the use of the product. Give two uses of POP.

The chemical formula of Plaster of Paris (POP) is CaSO4.½ H2O. 

Gypsum (CaSO4.2H2O) is formed on mixing POP with water as follows:

CaSO4.½ H2O + 1½ H2O → CaSO4.2H2O

Uses of POP:

In hospitals, as plaster for supporting fractured bones in the right position.

For making decorative materials and for making wall surfaces smooth.

As a fire-proofing material.