What is the formula of plaster of paris?

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answer is A.

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Detailed Solution

Concept- Gypsum is typically calcined to produce plaster of Paris, a white, powdery chemical substance that is hydrated calcium sulphate. In other terms, we can state that gypsum is typically heated to a high temperature and then used to make plaster of paris. Gypsum plaster is a term that is often used for plaster of paris.

is the chemical formula for plaster of paris and gypsum is

Plaster of Paris is calcium sulphate that has half a molecule of water for every molecule of salt (hemihydrate).
Gypsum is used to make it and is heated in rotating kilns to 120°C, where it partially dehydrates.
Hence, the correct answer is option 1.

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