1.

Assertion A: Alum is the most commonly used coagulant in water treatment.Reason R: Alum is very effective in killing pathogens present in the water.Which of the following is correct?

A. Both A and R are true, but R is not a correct explanation of A.
B. A is true but R is false.
C. Both A and R are true, and R is the correct explanation of A
D. A is false but R is true.
Answer» B. A is true but R is false.


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