Gypsum on heating gives :

1.	Gypsum on heating gives :
Answer» `CaSO_(4)(1)/(2)H_(2)O` `CaSO_(4)` `CaO+SO_(3)` `CaS+O_(2)` Solution :`CaSO_(4).2H_(2)Ooverset(120-130^(@)C)rarrunderset("Plaster of paris")(CaSO_(4).(1)/(2)H_(2)O)` `CaSO_(4).2H_(2)Ooverset(gt200^(@)C)rarrunderset("DEAD BURNT GYPSUM")(CaSO_(4))+2H_(2)O`

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