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.