1.

Consider the following statement1. The penetration of suspended matter is deep in the slow sand filter2. The penetration of suspended matter is superficial in the rapid sand filter3. Coagulation is not required in the slow sand filterWhich of the above statement is/are correct?

A. Only 3
B. 1, 2
C. 1, 2, 3
D. 2, 3
Answer» B. 1, 2


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