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| Q. |
In which tank flocks is sedimenated and forms respectively ? |
| A. | Settling tank, Aeration tank |
| B. | Aeration tank, Effluent tank |
| C. | Aeration tank, Settling tank |
| D. | Effluent tank, Anearoble tank |
| Answer» A. Settling tank, Aeration tank | |
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