(a) Identify the compound of calcium which is used for plastering of fractured bones. With the help of chemical equations show how it is prepared. What special precautions should be taken during the preparation of this compound ?
(b) Name the substance which on treatment with chlorine, yields bleaching powder, Also write chemical equation for its preparation.
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a) plaste of paris – calcium carbonate CaCO3
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calcium carbonate çaço3
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