MCQOPTIONS
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MCQOPTIONS
This section includes 17 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. |
HOW_MANY_PRODUCTS_ARE_OBTAINED_AFTER_DEWATERING??$ |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 2. |
Sludge treatment reduces the formation of struvite scales in pipes.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
The_liquid_has_high_contents_of_phosphorus_and_nitrogen,_if_the_sludge_has_been______$ |
| A. | Dewatered |
| B. | Aerobically digested |
| C. | Anaerobically digested |
| D. | Heated |
| Answer» D. Heated | |
| 4. |
Which of the following is an advantage of anaerobic digestion? |
| A. | Capital cost |
| B. | Time |
| C. | Methane generation |
| D. | Space |
| Answer» D. Space | |
| 5. |
Which of the following is not a product of anaerobic digestion? |
| A. | Water |
| B. | Oxygen |
| C. | Carbon dioxide |
| D. | Methane |
| Answer» C. Carbon dioxide | |
| 6. |
What is the duration of sludge in tanks for mesophilic anaerobic digestion? |
| A. | 10 days |
| B. | 12 days |
| C. | 15 days |
| D. | 18 days |
| Answer» C. 15 days | |
| 7. |
What is the temperature to be maintained for thermophilic digestion? |
| A. | 44ÀöC |
| B. | 55ÀöC |
| C. | 66ÀöC |
| D. | 77ÀöC |
| Answer» C. 66‚àö√Ñ‚àö‚àÇC | |
| 8. |
Anaerobic digestion is carried out in ____ |
| A. | Presence of oxygen |
| B. | Presence of carbon-dioxide |
| C. | Absence of oxygen |
| D. | Absence of carbon-dioxide |
| Answer» D. Absence of carbon-dioxide | |
| 9. |
Which of these is not a method of digestion? |
| A. | Composting |
| B. | Aerobic digestion |
| C. | Evaporation |
| D. | Anaerobic digestion |
| Answer» D. Anaerobic digestion | |
| 10. |
Sand drying bed is used for filtration? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
Which of the following processes is not used for water reduction? |
| A. | Centrifugation |
| B. | Filtration |
| C. | Heating |
| D. | Evaporation |
| Answer» D. Evaporation | |
| 12. |
Which year was the term biosolids introduced? |
| A. | 1990 |
| B. | 1993 |
| C. | 1995 |
| D. | 1998 |
| Answer» E. | |
| 13. |
Who introduced the term biosolids? |
| A. | UNEPA |
| B. | USEPA |
| C. | EPA |
| D. | WEF |
| Answer» E. | |
| 14. |
Biosolids are the inorganic wastewater solids. |
| A. | True |
| B. | False |
| Answer» C. | |
| 15. |
_______ is a term used for reuse of sewage sludge. |
| A. | Solids |
| B. | Biosolids |
| C. | Potential solids |
| D. | Manure |
| Answer» C. Potential solids | |
| 16. |
How many types of sludge are present? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 17. |
Sludge is composed of liquid components alone. |
| A. | True |
| B. | False |
| Answer» C. | |