

MCQOPTIONS
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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 | |