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What is the chemical name of plaster of Paris?

Answer and explanation

Correct answer: Calcium sulphate hemihydrate

Plaster of Paris is the partially dehydrated form of gypsum. Gypsum has the formula CaSO4·2H2O, whereas controlled heating produces CaSO4·½H2O. This compound is called calcium sulphate hemihydrate, so option A is correct. Calcium carbonate is limestone or chalk, sodium carbonate decahydrate is washing soda, and sodium chloride is common salt.

Related tags

Plaster Of ParisCalcium Sulphate HemihydrateGypsumAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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