MCQOPTIONS
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MCQOPTIONS
This section includes 18 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. |
While designing the aerated lagoon with solid recycling what is the solid retention time considered on a warm day? |
| A. | 10-20 days |
| B. | 40 days |
| C. | 25 days |
| D. | 30 days |
| Answer» B. 40 days | |
| 2. |
While designing the aerated lagoon what is the solid retention time considered? |
| A. | 7-8 days |
| B. | 3-6 days |
| C. | 1-2 days |
| D. | 10 days |
| Answer» C. 1-2 days | |
| 3. |
What is the ratio of VSS/TSS in ppm obtained when partially mixed lagoons treatment are carried out facultatively? |
| A. | 20-30 |
| B. | 40-50 |
| C. | 50-80 |
| D. | 80-100 |
| Answer» D. 80-100 | |
| 4. |
What is the ratio of VSS/TSS in ppm obtained when aerated lagoons are used for treatment? |
| A. | 10-20 |
| B. | 20-30 |
| C. | 70-80 |
| D. | 80-100 |
| Answer» D. 80-100 | |
| 5. |
WHILE_DESIGNING_THE_AERATED_LAGOON_WHAT_IS_THE_SOLID_RETENTION_TIME_CONSIDERED??$ |
| A. | 7-8 days |
| B. | 3-6 days |
| C. | 1-2 days |
| D. | 10 days |
| Answer» C. 1-2 days | |
| 6. |
WHAT_IS_THE_RATIO_OF_VSS/TSS_IN_PPM_OBTAINED_WHEN_PARTIALLY_MIXED_LAGOONS_TREATMENT_ARE_CARRIED_OUT_FACULTATIVELY??$ |
| A. | 20-30 |
| B. | 40-50 |
| C. | 50-80 |
| D. | 80-100 |
| Answer» D. 80-100 | |
| 7. |
While designing the aerated lagoon with solid recycling what is the solid retention time considered on a warm day?$ |
| A. | 10-20 days |
| B. | 40 days |
| C. | 25 days |
| D. | 30 days |
| Answer» B. 40 days | |
| 8. |
Which of the following methods consume the most power? |
| A. | Anaerobic digestion |
| B. | Aerated lagoon |
| C. | Aerated lagoon carried out facultatively |
| D. | Aerated lagoon with solid recycling |
| Answer» E. | |
| 9. |
Which of the following methods consume the least power? |
| A. | Aerated lagoon |
| B. | Aerated lagoon carried out facultatively |
| C. | Aerated lagoon with solid recycling |
| D. | Upflow anaerobic sludge bed digestor |
| Answer» C. Aerated lagoon with solid recycling | |
| 10. |
What is the minimum depth considered while designing an aerated lagoon? |
| A. | 3 m |
| B. | 2.5 m |
| C. | 2 m |
| D. | 1.5 m |
| Answer» C. 2 m | |
| 11. |
While designing the aerated lagoon carried out facultatively what is the hydraulic retention time considered? |
| A. | 3 days |
| B. | 4-6 days |
| C. | 10-30 days |
| D. | 40 days |
| Answer» C. 10-30 days | |
| 12. |
What is the outlet of TSS in ppm obtained when aerated lagoons are used for treatment? |
| A. | 500-700 |
| B. | 100-400 |
| C. | 700-900 |
| D. | 900-1200 |
| Answer» C. 700-900 | |
| 13. |
Which of the following is not true regarding mechanical aeration? |
| A. | Increases oxygen |
| B. | Enhances efficiency |
| C. | Reduces HRT |
| D. | Increases HRT |
| Answer» E. | |
| 14. |
The increased aeration facilitates ________ pathogen removal. |
| A. | Decreased |
| B. | Increases |
| C. | Slower |
| D. | Faster |
| Answer» C. Slower | |
| 15. |
Aerated ponds must be shallow. |
| A. | True |
| B. | False |
| Answer» C. | |
| 16. |
How many types of aerate ponds are present? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 17. |
Natural oxygenation is _______ in aerated ponds while compared to facultative ponds. |
| A. | More |
| B. | Less |
| C. | Equal |
| D. | Similar |
| Answer» B. Less | |
| 18. |
Aerobic ponds are similar to facultative ponds. |
| A. | True |
| B. | False |
| Answer» B. False | |