Question

how do plasters of paris can be produced​

Answer 1

Plaster of paris is prepared by heating calcium sulfate dihydrate, or gypsum, to 120–180 °C (248–356 °F). With an additive to the set, it is called wall, or hard wall, plaster, which can provide passive fire protection for interior surfaces.

Answer 2

Plaster of Paris is prepared by heating gypsum at 373 K. On heating, it loses water molecules and becomes calcium sulphate hemihydrate (CaSO4. 1/2 H2O) which is called Plaster of Paris.