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Presence of colloids helps in sewage disposal.

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in Chemistry – Class 12 by (188k points)
Presence of colloids helps in sewage disposal.

(a) True

(b) False

This question was posed to me in an internship interview.

My doubt is from Surface Chemistry in portion Surface Chemistry of Chemistry – Class 12

1 Answer

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Best answer
Correct answer is (a) True

Easiest explanation: Colloidal particles present in sewage such as dirt, mud have an electrical charge. When sewage is through plates at a high potential, the colloidal particles coagulate due to electrophoresis and gets removed.

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