28. Bone ash contains A.Calcium sulphate B.Phosphoric sulphate C.Calcium phosphate D.Calcium hypophosphate
Answer: Option C Solution: Bone ash is a white material produced by the calcination of bones. It is primarily composed of calcium phosphate. It is commonly used in fertilizers, polishing compounds and in making ceramics such as bone china. It also has historical uses in the manufacture of baking powders and assay cupels.
