i) Mention the role of alum in the purification of drinking water. ii – InterviewSolution

1.	i) Mention the role of alum in the purification of drinking water. ii) Give an example for oil dispersed in water emulsion.
Answer» SOLUTION :b) i) It COAGULATES the suspended impurities. ii) MILK is an example for OIL dispersed in water EMULSION.

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