Q20 of 270 Page 96

How is common salt obtained from sea-water?

The seawater or brine is fed into large ponds and water is drawn out through natural evaporation which allows the salt to be subsequently harvested.


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18

What are the two main ways in which common salt (sodium chloride) occurs in nature?

 19

Name the major salt present in sea- water.

 21

Why is sodium chloride required in our body?

 22

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