MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 11 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. |
Which of the following is the major disadvantage of heterotrophic nitrification? |
| A. | Excess sludge generation |
| B. | Less sludge generation |
| C. | Presence of oxygen |
| D. | Presence of carbon source |
| Answer» B. Less sludge generation | |
| 2. |
Which of the following is the correct expansion of OLNAD? |
| A. | Oxygen limited nitrification and denitrification |
| B. | Oxygen reduced nitrification and denitrification |
| C. | Oxygen limited ammonification and denitrification |
| D. | Oxygen reduced nitrification and ammonification |
| Answer» B. Oxygen reduced nitrification and denitrification | |
| 3. |
Ferrous ions can supplement biological phosphate removal. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
The optimal removal of phosphate by biological method should have a COD/P ratio of 20g COD/g of phosphate. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Nitrifying bacteria doesn t belong to which of the following genera? |
| A. | <i>Nitrosomonas</i> |
| B. | <i>Nitrosococcus</i> |
| C. | <i>Nitrosospira</i> |
| D. | <i>Pseudomonas</i> |
| Answer» E. | |
| 6. |
Which of the following is not an effect of retention or uptake of nitrogen and phosphorus in aquatic ecosystem? |
| A. | t Adverse health conditions |
| B. | tAlgal blooms |
| C. | tIncrease in water quality |
| D. | tReduction in marine life |
| Answer» D. tReduction in marine life | |
| 7. |
Autotrophic retention of nitrogen compounds leads to formation of nitrate by conversion of ammonia. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Removal of nitrogen cannot be done by which of the following process? |
| A. | Desalination |
| B. | Nitrification |
| C. | Ammonification |
| D. | Denitrification |
| Answer» B. Nitrification | |
| 9. |
Which of the following compound can help degrade amino nitrogen and heterocyclic nitrogen by biological method? |
| A. | Ammonia |
| B. | Nitrate |
| C. | Sulphate |
| D. | Carbon dioxide |
| Answer» B. Nitrate | |
| 10. |
Which of the following can be a major source for eutrophication of surface water? |
| A. | Nitrogen |
| B. | Calcium |
| C. | Magnesium |
| D. | Potassium |
| Answer» B. Calcium | |
| 11. |
Which of the following is a term used for the amount of pollutant retained in the body of an organism? |
| A. | Uptake |
| B. | Retention |
| C. | Dosage |
| D. | Potassium |
| Answer» C. Dosage | |