Write the method of preparation and one uses of each of the following. (a) plaster of Paris (b) washing soda (c) sodium chlorine gas (d) bleaching powder (e) baking powder
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a) plaster of Paris is used for fixing the broken bones
It is prepared by heating gypsum in 100C or 373K.
e) baking powder is used in soda acid fire extinguishers.
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