Salt can be obtained by ___________ of sea water.

sublimation

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cooling

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evaporation

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heating

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Solution

The correct option is C evaporation
On evaporation of seawater in shallow pools, salt along with impurities remain behind. Impured salt is taken in a tank and its saturated solution is prepared. In a saturated solution of salt, $H C l$ vapors are passed. Chloride ions being common to both, its concentration increases, and $N a C l$ gets precipitated which is free from impurities.

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