MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following gases are produced in large amounts during sludge digestion? |
| A. | methane |
| B. | carbon-dioxide |
| C. | hydrogen |
| D. | nitrogen |
| Answer» B. carbon-dioxide | |
| 2. |
Belt filter presses are used in which of the following process? |
| A. | Thickening |
| B. | Stabilization |
| C. | Dewatering |
| D. | Disposal |
| Answer» D. Disposal | |
| 3. |
BELT_FILTER_PRESSES_ARE_USED_IN_WHICH_OF_THE_FOLLOWING_PROCESS??$ |
| A. | Thickening |
| B. | Stabilization |
| C. | Dewatering |
| D. | Disposal |
| Answer» D. Disposal | |
| 4. |
Which_of_the_following_gases_are_produced_in_large_amounts_during_sludge_digestion?$ |
| A. | methane |
| B. | carbon-dioxide |
| C. | hydrogen |
| D. | nitrogen |
| Answer» B. carbon-dioxide | |
| 5. |
Trickling filter is used in which of the following wastewater treatment processes? |
| A. | Primary treatment |
| B. | Secondary treatment |
| C. | Advanced treatment |
| D. | Final treatment |
| Answer» C. Advanced treatment | |
| 6. |
Oxidation ponds are very deep ponds. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Activated sludge usually employs an aeration period of ________________ |
| A. | 1 hour |
| B. | 24 hours |
| C. | 10-15 hours |
| D. | 4-8 hours |
| Answer» E. | |
| 8. |
The upper region of the trickling filter is favorable for the growth of _____________ |
| A. | fungi |
| B. | protozoa |
| C. | algae |
| D. | bacteria |
| Answer» D. bacteria | |
| 9. |
In which of the following treatment involve oxidation of organic constituents of the wastewater? |
| A. | Primary treatment |
| B. | Secondary treatment |
| C. | Advanced treatment |
| D. | Final treatment |
| Answer» C. Advanced treatment | |
| 10. |
Which of the following is a strict anaerobe? |
| A. | Enterobacter |
| B. | Alcaligenes |
| C. | Pseudomonas |
| D. | Methanosarcina |
| Answer» E. | |
| 11. |
The more oxidizable organic material, the lesser the BOD. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
Which of the following sewerage systems carry domestic and industrial wastewater? |
| A. | sanitary sewers |
| B. | storm sewers |
| C. | combined sewers |
| D. | storm and combined sewers |
| Answer» B. storm sewers | |