Question

The correct formula for plaster of Paris is

• A. $CaSO_4.4H_2O$
• B. $CaSO_4.2H_2O$
• C. $CaSO_4.\frac 12H_2O$
• D. $CaSO_4.1H_2O$

Answer 1

Answer: (C)

$CaSO_4.\frac 12H_2O$

Answer 2

The correct option is (C): $CaSO_4.\frac 12H_2O$.