Q. Plaster of Paris ______. I. changes into gypsum on mixing with waterII. is CaSO4.2H2OIII. is used for decoration

A) Only I and III

B) Only I and II

C) All I, II and III

D) Only II and III

✔ Correct Answer: Only I and III

Exam Insight

Plaster of Paris (CaSO4·0.5H2O) changes into gypsum (CaSO4·2H2O) when mixed with water. It is widely used for decorative moldings and medical applications.

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