1.

Gypsum on heating at 120°C  130°C gives: (a) Hemihydrate(b) Monohydrate (c) Dihydrates (d) Anhydrous salt

Answer»

Correct Option (a) Hemihydrate

Explanation :

CaSO42H2O + 120°C  CaSO4 .1/2H2O
or (CaSO4 ).H2O Gypsum


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