Question

common salt obtained from salt pans is purified further.

give reason......

Answer 1

the salt obtained from salt pans contains Many other toxic salts in them which makes it non edible
so it is purified further and iodised
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Answer 2

Reason for purification of common salt obtained from salt pans.

• Common salt is obtained in huge quantities through a process called evaporation.
• In this process, seawater is filled in large pans in left undisturbed for some time in open yards during which the water gets evaporated and salt remains in the pit.
• As this process is done in huge places which are very exposed and open, the salt obtained may contain a high amount of impurities as well as undesirable metals unfit for consumption.
• In order to make the salt fit for domestic purpose, the salt obtained from salt pans are purified many times.

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