Question

4. Decantation and
are the
processes followed in removing insoluble
impurities from a river water for city water
supply system.
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Answer 1

Answer:

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Answer 2

Answer:

Filtration is a physical process that removes these impurities from water by percolating it downward through a layer or bed of porous, granular material such as sand. Suspended particles become trapped within the pore spaces of the filter media, which also remove harmful protozoa and natural colour.

Explanation:

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