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

The correct answer is B. Calcium sulphate.

Plaster of Paris is a white powder that is made by heating gypsum, which is a mineral that is found in nature. When gypsum is heated, it loses some of its water and turns into calcium sulphate hemihydrate. This powder can be mixed with water to form a paste that can be used to set

Calcium nitrate is a white, water-soluble salt that is used as a fertilizer and in the manufacture of explosives. Calcium carbonate is a white, chalky mineral that is found in limestone and marble. Calcium chloride is a white, water-soluble salt that is used as a de-icer and in the manufacture of plastics.

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