1. Calcium nitrate
  2. Calcium sulphate
  3. Calcium carbonate
  4. Calcium chloride
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1 Answers

Answer: Option 2

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.

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