The product, which is obtained by calcining gypsum under steam pressure at 120-130°C or by dehydrating gypsum in the presence of sodium succinate is_______________?

A.\tAlpha – hemihydratesCorrect Answer
B.\tBeta – hemihydrates
C.\tCalcium sulphate dihydrate
D.\tOrthorhombic anhydrate
Correct Option: A.\tAlpha – hemihydrates

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