1.

Consider the following statement1. The slow sand filter is not efficient in removing turbidity2. The slow sand filter has a high initial cost3. Skilled supervision is required in slow sand filterWhich of the above statement is/are correct?

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


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