What is the ratio of Alum/Phosphate while adding alum to a waste water – McqOptions

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1.	What is the ratio of Alum/Phosphate while adding alum to a waste water in order to remove the phosphates present?
A.	t1.4 : 2.5
B.	t1 : 2
C.	t3:5
D.	t5:7
Answer» B. t1 : 2

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