MCQ
Dead burnt plaster is:
- ✓$\text{CaSO}_4$
- B$\text{CaSO}_4\frac{1}{2}\text{H}_2\text{O}$
- C$\text{CaSO}_4\cdot\text{H}_2\text{O}$
- D$\text{CaSO}_4\cdot2\text{H}_2\text{O}$
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