alleryPlaster of Paris is chemically:
ACaCO₃
BCaSO₄·½H₂O
CCaCl₂·2H₂O
DCaSO₄·2H₂O
Answer & Solution
Correct answer: B. CaSO₄·½H₂O
Plaster of Paris is calcium sulfate hemihydrate, CaSO₄·½H₂O.
The hemihydrate sets to gypsum (CaSO₄·2H₂O) on adding water.
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