1. Write down the preparation, 2 properties and 2 uses for the following :- (a) Washing soda. (b) Baking soda. (c) Bleaching powder. (d) Plaster of paris. 2. Why does a transformer not work in DC?
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Washing soda: The soda, which is produced from common salt. It is obtained by heating sodium hydrogen carbonate where re-crystallization of sodium carbonate produces washing soda.
Baking soda: It is used in the kitchen for making delicious items. It is produced by using sodium chloride as one of the raw materials.
Bleaching powder: It is used for disinfecting water to make it free of germ. It is also used in the textile industry to produce cotton.
Washing soda: The soda, which is produced from common salt. It is obtained by heating sodium hydrogen carbonate where re-crystallization of sodium carbonate produces washing soda.
Baking soda: It is used in the kitchen for making delicious items. It is produced by using sodium chloride as one of the raw materials.
Bleaching powder: It is used for disinfecting water to make it free of germ. It is also used in the textile industry to produce cotton.
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