Lime and soda ash are added to water to remove ___________________?
Correct answer: C. Bicarbonates & sulphates of calcium and magnesium
- A. Bacteria
- B. Undesirable taste and odour
- C. Bicarbonates & sulphates of calcium and magnesium
- D. Its corrosiveness
Explanation
The lime-soda process softens water by precipitating calcium and magnesium as carbonates and hydroxides, removing their bicarbonates and sulphates. It is not primarily a method for removing taste, bacteria, or corrosiveness.
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