MCQOPTIONS
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MCQOPTIONS
This section includes 10 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 maximum BOD removal efficiency of an oxidation pond is ___________ |
| A. | 90% |
| B. | 68% |
| C. | 70% |
| D. | 80% |
| Answer» B. 68% | |
| 2. |
The detention period of oxidation pond is ___________ |
| A. | 12-36 hours |
| B. | 4 hours |
| C. | 10-20 days |
| D. | 30-60 seconds |
| Answer» D. 30-60 seconds | |
| 3. |
Oxidation pond is ineffective in removing pathogenic bacteria. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
The minimum design depth of oxidation pond is ___________ |
| A. | 0.3m |
| B. | 0.5m |
| C. | 1m |
| D. | 1.5m |
| Answer» D. 1.5m | |
| 5. |
Which chemical is added to the oxidation pond to avoid bad odor? |
| A. | Calcium chloride |
| B. | Sodium nitrate |
| C. | Potassium chloride |
| D. | Silver nitrate |
| Answer» C. Potassium chloride | |
| 6. |
What is the minimum depth of water to be kept in oxidation pond? |
| A. | 0.3m |
| B. | 0.5m |
| C. | 1m |
| D. | 1.5m |
| Answer» D. 1.5m | |
| 7. |
The maximum BOD removal efficiency of an oxidation pond is |
| A. | 90% |
| B. | 68% |
| C. | 70% |
| D. | 80% |
| Answer» B. 68% | |
| 8. |
The detention period of oxidation pond is |
| A. | 12-36 hours |
| B. | 4 hours |
| C. | 10-20 days |
| D. | 30-60 seconds |
| Answer» D. 30-60 seconds | |
| 9. |
The minimum design depth of oxidation pond is |
| A. | 0.3m |
| B. | 0.5m |
| C. | 1m |
| D. | 1.5m |
| Answer» D. 1.5m | |
| 10. |
Which of the following is an anaerobic process for treating sewage? |
| A. | Oxidation pond |
| B. | Imhoff tank |
| C. | Oxidation ditch |
| D. | Rotating Biological Contactors |
| Answer» C. Oxidation ditch | |