A) \[CaS{{O}_{4}}\cdot \frac{3}{2}{{H}_{2}}O\]
B) \[CaS{{O}_{4}}\cdot \frac{1}{2}{{H}_{2}}O\]
C) \[CaS{{O}_{4}}\cdot {{H}_{2}}O\]
D) \[CaS{{O}_{4}}\cdot 2{{H}_{2}}O\]
E) None of these
Correct Answer: B
Solution :
Plaster of Paris is \[CaS{{O}_{4}}\cdot \frac{1}{2}{{H}_{2}}O.\]
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