 
			 
			MCQOPTIONS
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				This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Waste Water Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. | The sludge particles concentration is increased by the growth of the organism in aeration tanks. | 
| A. | tTrue | 
| B. | tFalse | 
| Answer» C. | |
| 2. | Mechanical stirring can be done instead of injection of air from the bottom. | 
| A. | tTrue | 
| B. | tFalse | 
| Answer» B. tFalse | |
| 3. | Which are the three ingredients in activated sludge systems? | 
| A. | tCells, sewage and oxygen | 
| B. | tCells, sewage and nitrogen | 
| C. | tSolids, sewage and oxygen | 
| D. | tSolids, water and oxygen | 
| Answer» B. tCells, sewage and nitrogen | |