MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Environmental Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The nitrogenous demand begins after how many days?Figure: BOD vs time curve |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 5 |
| Answer» E. | |
| 2. |
Which of the following is correctly matched in the following figure?Figure: BOD vs time curve |
| A. | ZR – Carbonaceous demand |
| B. | RE – Nitrogenous demand |
| C. | EP – Final demand |
| D. | ZP – Combined demand |
| Answer» E. | |
| 3. |
The nitrogenous demand occurs due to oxidation of ______________Figure: BOD vs time curve |
| A. | Ammonia |
| B. | Sulfur |
| C. | Organic matter |
| D. | Nitrogen |
| Answer» B. Sulfur | |
| 4. |
The carbonaceous demand occurs due to oxidation of ______________Figure: BOD vs time curve |
| A. | Ammonia |
| B. | Sulfur |
| C. | Organic matter |
| D. | Nitrogen |
| Answer» D. Nitrogen | |
| 5. |
Which of the following represents the second stage BOD in the following figure?Figure: BOD vs time curve |
| A. | LP |
| B. | RL |
| C. | ZL |
| D. | EP |
| Answer» B. RL | |
| 6. |
Which of the following represents the first stage BOD in the following figure?Figure: BOD vs time curve |
| A. | ZR |
| B. | RL |
| C. | ZL |
| D. | EP |
| Answer» D. EP | |
| 7. |
The value of deoxygenation constant is independent of the temperature. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
The biochemical oxygen demand is computed by __________ |
| A. | Dissolved oxygen / Dilution factor |
| B. | Dissolved oxygen + Dilution factor |
| C. | Dissolved oxygen – Dilution factor |
| D. | Dissolved oxygen * Dilution factor |
| Answer» E. | |
| 9. |
The full form of BOD is __________ |
| A. | Biodegradable oxygen demand |
| B. | Biological oxygen demand |
| C. | Biochemical oxygen demand |
| D. | Bandwidth on demand |
| Answer» D. Bandwidth on demand | |
| 10. |
THE_CARBONACEOUS_DEMAND_OCCURS_DUE_TO_OXIDATION_OF?$ |
| A. | Ammonia |
| B. | Sulfur |
| C. | Organic matter |
| D. | Nitrogen |
| Answer» E. | |
| 11. |
Which of the following represents the second stage BOD? |
| A. | LP |
| B. | RL |
| C. | ZL |
| D. | EP |
| Answer» E. | |
| 12. |
Which of the following represents the first stage BOD? |
| A. | ZR |
| B. | RL |
| C. | ZL |
| D. | EP |
| Answer» B. RL | |
| 13. |
The biochemical oxygen demand is computed by |
| A. | Dissolved oxygen / Dilution factor |
| B. | Dissolved oxygen + Dilution factor |
| C. | Dissolved oxygen – Dilution factor |
| D. | Dissolved oxygen * Dilution factor |
| Answer» E. | |
| 14. |
The full form of BOD is |
| A. | Biodegradable oxygen demand |
| B. | Biological oxygen demand |
| C. | Biochemical oxygen demand |
| D. | Bandwidth on demand |
| Answer» D. Bandwidth on demand | |
| 15. |
_____ is the amount of oxygen required to oxidize only organic matter in sewage. |
| A. | Turbidity |
| B. | BOD |
| C. | COD |
| D. | DO |
| Answer» C. COD | |