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HOW IS CALCIUM SULPHATE FROM CALCIUM CARBONATE?

Calcium sulphate ,occuring in the anhydrous form and in a hydrated form which upon being calcinated forms plaster of paris.                                                                                             Calcium carbonate is an insoluble salt occuring naturally in shells, limestone, and chalk and also used in purified forms , used as an antacid and calcium replenisher and in the treatment of osteoporosis.


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