Which of the following on heating at `125^(@)`C gives Plaster of Paris?
Which of the following on heating at `125^(@)`C gives Plaster of Paris?
A. Borax
B. Gypsum
C. Alum
D. Calomel
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Correct Answer - B
Gypsum `(CaSO_4.2H_2O)` on heating at `125^(@)`C gives Plaster of Paris.
`CaSO_4.2H_2Ooverset(Delta//125^(@)C)toCaSO_4.1/2H_2O+1(1)/(2)H_2Odownarrow`
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