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Q: Plaster of Paris is obtained by calcining.
  • A. Bauxite.
  • B. Gypsum.
  • C. Kankar.
  • D. Limestone.
Correct Answer: Option B - Plaster of Paris is made by heating the mineral gypsum. When gypsum is heated to about 150°C it looses water and produce the powder, is known as plaster of Paris.
B. Plaster of Paris is made by heating the mineral gypsum. When gypsum is heated to about 150°C it looses water and produce the powder, is known as plaster of Paris.

Explanations:

Plaster of Paris is made by heating the mineral gypsum. When gypsum is heated to about 150°C it looses water and produce the powder, is known as plaster of Paris.