Q24 of 270 Page 96

What name is given to the common salt which is mined from underground deposits? How was this salt formed?

Deposits of solid salt which are mined like coal are called rock salt. Beds of rock salt were formed when seas of bygone ages dried up.


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Name three chemicals made from common salt (or sodium chloride).

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Give any two uses of common salt (sodium chloride).

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Name the salt which is used as a preservative in pickles, and in curing meat and fish.

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Name the raw material used for the production of caustic soda.