Alum as a coagulant is found to be most effective when pH range of water is________?

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A8 to 10

B2 to 4

C6 to 8

D4 to 6

Correct answer

C. 6 to 8

Explanation

The correct answer is 6 to 8.

Alum as a coagulant is found to be most effective when pH range of water is________? - Answer and Explanation | Academy of Pakistan