Gypsum consists of
A. H2S and CO2
B. CaSO4 and H2O
C. Lime and H2O
D. CO2 and calcium
Answer: Option B
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Gypsum is calcium sulphate chemical formula is CaSO4 and it is salt acid , it contents water having formula H2O. It is also called Plaster of Paris , it acts as retarder in concrete and cement as well.
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