

MCQOPTIONS
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1. |
Consider the following statement1. Slow sand filter is not flexible in variation in demand2. The rapid sand filter is flexible in fluctuations in demand3. The method of cleaning of a slow sand filter involves agitation and back-washingWhich of the above statement is/are correct? |
A. | 1, 2 |
B. | 1, 2, 3 |
C. | 2, 3 |
D. | Only 3 |
Answer» B. 1, 2, 3 | |