A) \[CaS{{O}_{4}}\]
B) \[2CaS{{O}_{4}}.{{H}_{2}}O\]
C) \[CaS{{O}_{4}}.{{H}_{2}}O\]
D) \[2CaS{{O}_{4}}.3{{H}_{2}}O\]
Correct Answer: B
Solution :
\[2\underset{\text{Gypsum}}{\mathop{(CaS{{O}_{4}}.2{{H}_{2}}O)}}\,\underset{\text{Dehydration}}{\mathop{\xrightarrow{{{120}^{o}}C}}}\,\ \underset{\text{Plaster of paris }}{\mathop{2CaS{{O}_{4}}.{{H}_{2}}O}}\,\,+3{{H}_{2}}O\]
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