Chemical Process
Good quality of edible salt is obtained from brine by the process of

Freeze drying
Electrolysis
Solar evaporation
Vacuum evaporation

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Chemical Process
Use of hydrated lime in water treatment

Before filtration, reduces the bacterial load on filters
All of these
Is to adjust the pH value
After filtration, combats the corrosive-ness of water due to the presence of O₂ & CO₂

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