(1) Salt 'A' commonly used in bakery products on heating gets converted into another salt 'B' which
itself is used for removal of hardness of water and a gas 'C' is evolved. The gas 'C' when passed through
lime water, turns it milky. Identify A, B and C. Write the reaction involved with balancing.
(ii) Write any two uses of salt A.
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Answer:
Baking power which is a salt is used as bakery product which gives sodium carbonate and carbon dioxide gas on heating. Sodium carbonate is used to remove the hardness of water.
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Answer: 1.Salt B is sodium carbonate, which is used to remove the hardness of water. C is carbon dioxide gas which turns lime water milky.
2.Salt has long been used for flavoring and for preserving food. It has also been used in tanning, dyeing and bleaching, and the production of pottery, soap, and chlorine. Today, it is widely used in the chemical industry.
Explanation:
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