Anhydrous calcium sulphate can not be used as plaster of paris.Give reason?
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Because it is hard and donot have 1/2 molecule of water.....
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Anhydrous calcium sulfate is essentially insoluble in water. ... When water is added to the hemihydrate, a reaction occurs that results in the formation of a hard, solid mass (plaster of Paris) used in making casts, such as those used to hold broken bones in place.
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