MCQOPTIONS
Saved Bookmarks
| 1. |
The rate of filtration through slow sand filters in million liter/day/hectare is: |
| A. | 24 - 48 |
| B. | 100 - 150 |
| C. | 500 - 600 |
| D. | 1400 - 1500 |
| Answer» B. 100 - 150 | |