MCQOPTIONS
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MCQOPTIONS
This section includes 22 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 number of stages required for the completion of aerobic oxidation is __________ |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 2. |
The decomposition of nitrogenous organic matter in the absence of oxygen gives __________ |
| A. | Nitrites and water |
| B. | Carbon dioxide and water |
| C. | Nitrates and ammonia |
| D. | Nitrogen, ammonia and organic acids |
| Answer» E. | |
| 3. |
The energy released during the aerobic oxidation of organic matter is _____ kilo calories. |
| A. | 26 |
| B. | 254 |
| C. | 360 |
| D. | 484 |
| Answer» E. | |
| 4. |
The aerobic decomposition of sulfurous organic matter gives __________ |
| A. | Nitrites and water |
| B. | Carbon dioxide and water |
| C. | Sulfates and water |
| D. | Nitrogen and Ammonia |
| Answer» D. Nitrogen and Ammonia | |
| 5. |
Partially oxidized sewage contains __________ |
| A. | Nitrites and Nitrates |
| B. | Nitrates and sulfur |
| C. | Sulfates and nitrates |
| D. | Nitrites and sulfur |
| Answer» E. | |
| 6. |
Methane is formed due to the reduction of __________ |
| A. | Nitrates |
| B. | Sulfates |
| C. | Carbon dioxide |
| D. | Organic acids |
| Answer» E. | |
| 7. |
The aerobic decomposition of nitrogenous organic matter gives __________ |
| A. | Nitrites and water |
| B. | Carbon dioxide and water |
| C. | Nitrates and ammonia |
| D. | Nitrogen and ammonia |
| Answer» D. Nitrogen and ammonia | |
| 8. |
BOD of wastewater having aerobic oxidation is more than that, having anaerobic oxidation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
The aerobic decomposition of carbonaceous organic matter gives __________ |
| A. | Nitrites and water |
| B. | Carbon dioxide and water |
| C. | Sulfates and water |
| D. | Nitrogen and Ammonia |
| Answer» C. Sulfates and water | |
| 10. |
THE_AEROBIC_DECOMPOSITION_OF_SULFUROUS_ORGANIC_MATTER_GIVES?$ |
| A. | Nitrites and water |
| B. | Carbon dioxide and water |
| C. | Sulfates and water |
| D. | Nitrogen and Ammonia |
| Answer» D. Nitrogen and Ammonia | |
| 11. |
The decomposition of nitrogenous organic matter in the absence of oxygen gives$ |
| A. | Nitrites and water |
| B. | Carbon dioxide and water |
| C. | Nitrates and ammonia |
| D. | Nitrogen, ammonia and organic acids |
| Answer» E. | |
| 12. |
The energy released during the aerobic oxidation of organic matter is _____ kilo calories.$ |
| A. | 26 |
| B. | 254 |
| C. | 360 |
| D. | 484 |
| Answer» E. | |
| 13. |
The energy released during the anaerobic oxidation of organic matter is _____ kilo calories. |
| A. | 26 |
| B. | 254 |
| C. | 360 |
| D. | 484 |
| Answer» B. 254 | |
| 14. |
Which of the following is formed from oxidation of organic matter in the presence of oxygen? |
| A. | NO<sub>3</sub> |
| B. | SO<sub>4</sub> |
| C. | H<sub>2</sub>S |
| D. | NH<sub>2</sub> |
| Answer» B. SO<sub>4</sub> | |
| 15. |
The number of stages required for the completion of aerobic oxidation is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 16. |
Which of the following is formed from the anaerobic oxidation of organic matter? |
| A. | NO<sub>3</sub> |
| B. | SO<sub>4</sub> |
| C. | H<sub>2</sub>S |
| D. | NH<sub>2</sub> |
| Answer» D. NH<sub>2</sub> | |
| 17. |
Partially oxidized sewage contain? |
| A. | Nitrites and Nitrates |
| B. | Nitrates and sulfur |
| C. | Sulfates and nitrates |
| D. | Nitrites and sulfur |
| Answer» E. | |
| 18. |
Which of the following is formed due to the reduction of sulfurous organic matter? |
| A. | Hydrogen sulfide |
| B. | Hydrochloric acid |
| C. | Sulfuric acid |
| D. | Sulfur dioxide |
| Answer» B. Hydrochloric acid | |
| 19. |
Which of the following is formed due to the anaerobic decomposition of carbonaceous organic matter? |
| A. | Nitrites |
| B. | Carbon dioxide |
| C. | Water |
| D. | Nitrogen |
| Answer» C. Water | |
| 20. |
Methane is formed due to the reduction of |
| A. | Nitrates |
| B. | Sulfates |
| C. | Carbon dioxide |
| D. | Organic acids |
| Answer» E. | |
| 21. |
The aerobic decomposition of carbonaceous organic matter gives |
| A. | Nitrites and water |
| B. | Carbon dioxide and water |
| C. | Sulfates and water |
| D. | Nitrogen and Ammonia |
| Answer» C. Sulfates and water | |
| 22. |
Which of the following is an end product formed from both the aerobic and anaerobic decomposition of organic matter? |
| A. | NO<sub>3</sub> |
| B. | CH<sub>4</sub> |
| C. | H<sub>2</sub>S |
| D. | CO<sub>2</sub> |
| Answer» E. | |