Plaster of Paris is ……….

1.	Plaster of Paris is ……….
Answer» `CaSO_(4)2H_(2)O` `CaSO_(4)3H_(2)O` `CaSO_(4)H_(2)O` `CaSO_(4)(1)/(2)H_(2)O` SOLUTION :`CaSO_(4)(1)/(2) H_(2)O" OR " (CaSO_(4))_(2)H_(2)O`

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