MCQOPTIONS
Saved Bookmarks
| 1. |
In preliminary treatment of sewage, the operation which takes place, is |
| A. | removal of fine suspended particles |
| B. | removal of fine dissolved organic material |
| C. | removal of lighter floating material |
| D. | removal of harmful bacterias and otherorganisms |
| Answer» D. removal of harmful bacterias and otherorganisms | |