MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Biotechnology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Nitric acid is formed during oxidation of ammonia. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Nitrogen is returned back into the atmosphere by the activity of _________ |
| A. | Decomposers |
| B. | Dead organisms |
| C. | Nitrifying bacteria |
| D. | Pathogenic bacteria |
| Answer» B. Dead organisms | |
| 3. |
Nitrifying bacteria cannot survive at 0° C. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
The optimum growth temperature of nitrifying bacteria is __________ |
| A. | 77-86° F |
| B. | 64° F |
| C. | 32° F |
| D. | 46-50° F |
| Answer» B. 64° F | |
| 5. |
Bacteria eat a lot of ammonia produced in the fish gills. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Which of the following bacteria is involved in nitrification of ammonia? |
| A. | Nitrite oxidizing bacteria |
| B. | Denitrifying bacteria |
| C. | Pathogenic bacteria |
| D. | Fat stabilizing bacteria |
| Answer» B. Denitrifying bacteria | |
| 7. |
_____________ bacteria get the energy from oxidation of inorganic nitrogen compounds. |
| A. | Organic pollutant |
| B. | Fish biomass |
| C. | Nitrifying bacteria |
| D. | Pathogenic bacteria |
| Answer» D. Pathogenic bacteria | |
| 8. |
Which of the following metal catalyst is not used during catalytic oxidation of ammonia? |
| A. | Platinum |
| B. | Copper |
| C. | Nickel |
| D. | NaCl |
| Answer» E. | |
| 9. |
Nitrification of ammonia involves two oxidation stages. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Biological oxidation of ammonia is called as ____________ |
| A. | Nitrification |
| B. | Denitrification |
| C. | Salination |
| D. | Ammonification |
| Answer» B. Denitrification | |