Which of the following is added to muddy water to settle the colloidal particles?

Alum

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Lime

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Potash

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Chlorine

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Solution

The correct option is A
Alum

Alum, when added to raw muddy water, reacts with the impurities present in water and forms a precipitate. This precipitate attracts other fine particles and suspended material in raw water, and settles down at the bottom of the container.

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Similar questions

When muddy water is kept for sometime undisturbed, impurities settle down. By which technique does the impurity settle down?

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