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The chemical name of which substance is calcium sulphate hemihydrate?

ABaking powder
BPlaster of Paris
CGypsum
DBaking soda
Answer & Solution
Correct answer: B. Plaster of Paris
1. Plaster of Paris has the formula CaSO4 . (1/2)H2O. 2. This is calcium sulphate hemihydrate. 3. So the correct answer is Plaster of Paris. _Source: RRB Group D CEN-02/2018 PYQ, Q.82._
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