Question

Plaster of Paris is

• A. \(\text{CaSO}_4\cdot2\text{H}_2\text{O}\)
• B. \(\text{MgSO}_4\cdot7\text{H}_2\text{O}\)
• C. \(\text{CaSO}_4\cdot\frac{1}{2}\text{H}_2\text{O}\)
• D. CaSO₄

Hint:

Plaster of Paris is obtained by partial dehydration of gypsum.

Answer 1

The Correct Option is C

Step 1: Plaster of Paris is calcium sulphate hemihydrate.
Step 2: Chemical formula is CaSO₄·(1)/(2)H₂O