MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Environmental Biotechnology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
___________ is a natural method of waste water treatment. |
| A. | Chemical method |
| B. | Physical method |
| C. | Water hyacinth pond |
| D. | Rotating biological contractors |
| Answer» D. Rotating biological contractors | |
| 2. |
Which of the following is low energy consuming system for waste water treatment? |
| A. | Biological wave contractor |
| B. | Rotating biological contractors |
| C. | High rate bio filters |
| D. | Conventional bio filters |
| Answer» B. Rotating biological contractors | |
| 3. |
Activated sludge is a type of wastewater treatment method for the treatment of sewage or industrial wastewaters using aeration and a microbial floc. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Up flow anaerobic sludge blanket reactor is an anaerobic digester which is used for wastewater treatment with the help of suspended sludge blanket filters. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Absorbing oxygen from the air and pollutants from the wastewater can be decomposed aerobic microorganisms by which of the following methods? |
| A. | High rate bio filters |
| B. | Conventional bio filters |
| C. | Percolating filter |
| D. | Rotating biological contractors |
| Answer» E. | |
| 6. |
Organic overloading is a major problem associated with Rotating biological contractors. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Rotating biological contractors is used for carbonaceous oxidation as a ________ |
| A. | High rate bio filters |
| B. | Conventional bio filters |
| C. | Roughing filter |
| D. | Filter cake |
| Answer» D. Filter cake | |
| 8. |
Which of the following has the potential to rough high strength industrial effluents prior to sewage discharge? |
| A. | High rate bio filters |
| B. | Conventional bio filters |
| C. | Percolating filters |
| D. | Rotating biological contractors |
| Answer» B. Conventional bio filters | |
| 9. |
Which of the following factors doesn t influence biological treatment efficiency? |
| A. | Surface area |
| B. | Void space |
| C. | Drainage |
| D. | High BOD |
| Answer» E. | |
| 10. |
Effective preliminary treatment can also be used to remove the ____ |
| A. | Girt and rag |
| B. | Carbon dioxide |
| C. | Nutrients |
| D. | Oxygen |
| Answer» B. Carbon dioxide | |
| 11. |
Compensation for lower temperatures can be achieved by reducing hydraulic and organic loading rates thereby increasing _____________ |
| A. | Retention time |
| B. | Mixing |
| C. | Aeration |
| D. | Sparging |
| Answer» B. Mixing | |
| 12. |
Bio filters are fed with effluent only after ____________ |
| A. | Initial settlement |
| B. | Bio-accumulation |
| C. | Bio-degradation |
| D. | Bio-magnification |
| Answer» B. Bio-accumulation | |
| 13. |
In the exposed lands, ______ are used to assist rotation during harsh weather conditions? |
| A. | Wind vanes |
| B. | Water sprayer |
| C. | Flow bed |
| D. | Motor drives |
| Answer» B. Water sprayer | |
| 14. |
Which of the following is another name given to conventional bio filters? |
| A. | Percolating filter |
| B. | Filter cake |
| C. | Injection recovery |
| D. | Bio-luminescence |
| Answer» B. Filter cake | |
| 15. |
Secondary treatment systems can be used for biological degradation of ____________ in municipal waste waters. |
| A. | Carbon dioxide and methane |
| B. | Nitrogen and CO<sub>2</sub> |
| C. | CO and methane |
| D. | Organic pollutants |
| Answer» E. | |