Plaster of paris in contact with water sets into a hard mass. The comp – InterviewSolution

1.	Plaster of paris in contact with water sets into a hard mass. The composition of hard mass is:
Answer» `CaSO_4.H_2O` `CaC_2 and CO` `CaSO_4 . 2H_2O` `CaC_2 and CO_2` ANSWER :C

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