1.

The_rate_of_filtration_for_rapid_sand_filter_is____________

A. 3000 to 4500 lit/hr/m<sup>2</sup>
B. 4500 to 6500 lit/hr/m<sup>2</sup>
C. 3000 to 6000 lit/hr/m<sup>2</sup>
D. 4500 to 7000 lit/hr/m<sup>2</sup>
Answer» D. 4500 to 7000 lit/hr/m<sup>2</sup>


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