40. The chemical name of 'Plaster of Paris' commonly used for setting broken bones is A.Calcium nitrate B.Calcium sulphate C.Calcium carbonate D.Calcium chloride
Answer: Option B Solution: Plaster of Paris is the common name of Calcium Sulphate hemihydrate, with chemical formula: CaSO4.1/2H2O. Plaster of Paris is produced by heating gypsum to about 150°C.
