MCQOPTIONS
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MCQOPTIONS
This section includes 20 Mcqs, each offering curated multiple-choice questions to sharpen your Bioprocess Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The pH of water sample collected from a river was found to be acidic in the range of 3.5 – 4.5. On the banks of the river were several factories that were discharging effluents into the river. The effluents of which one of the following factories is the most likely cause for lowering the pH of river water? |
| A. | Soap factory |
| B. | Detergent factory |
| C. | Alcohol distillery |
| D. | Plastic cup manufacturing factory |
| Answer» D. Plastic cup manufacturing factory | |
| 2. |
What is the function of disengagement zone from the following? |
| A. | Increase foaming |
| B. | Maximize recirculation of bubbles |
| C. | Increase volume to the reactor |
| D. | Decrease volume to the reactor |
| Answer» D. Decrease volume to the reactor | |
| 3. |
KLa is different in between Air-lift reactors and bubble columns? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Bubble column reactor cannot be used for? |
| A. | Low viscous medium |
| B. | High viscous medium |
| C. | Liquid state medium |
| D. | Solid state medium |
| Answer» C. Liquid state medium | |
| 5. |
What do you mean by “Impeller flooding”? |
| A. | The flooding of an impeller |
| B. | Gas handling is greater than the amount introduced |
| C. | Gas handling is smaller than the amount introduced |
| D. | Leakage of the Broth |
| Answer» D. Leakage of the Broth | |
| 6. |
BUBBLE_COLUMN_REACTOR_CANNOT_BE_USED_FOR??$ |
| A. | Low viscous medium |
| B. | High viscous medium |
| C. | Liquid state medium |
| D. | Solid state medium |
| Answer» C. Liquid state medium | |
| 7. |
What is the function of disengagement zone from the following?$ |
| A. | Increase foaming |
| B. | Maximize recirculation of bubbles |
| C. | Increase volume to the reactor |
| D. | Decrease volume to the reactor |
| Answer» D. Decrease volume to the reactor | |
| 8. |
KLa is different in between Air-lift reactors and bubble columns?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
Low dissolved oxygen concentrations leads to |
| A. | Low biomass yields |
| B. | High biomass yields |
| C. | Equal biomass compositions |
| D. | No effect on biomass yields |
| Answer» B. High biomass yields | |
| 10. |
Mixing in an anaerobic sludge blanket reactor is due to? |
| A. | Rapid change in water temperatures throughout the reactor |
| B. | Release of gases by the microbial populations |
| C. | Rapid change in medium temperature throughout the reactor |
| D. | Due to viscous medium |
| Answer» C. Rapid change in medium temperature throughout the reactor | |
| 11. |
The pH of water sample collected from a river was found to be acidic in the range of 3.5 – 4.5. On the banks of the river were several factories that were discharging effluents into the river. The effluents of which one of the following factories is the most likely cause for lowering the pH of river water?$ |
| A. | Soap factory |
| B. | Detergent factory |
| C. | Alcohol distillery |
| D. | Plastic cup manufacturing factory |
| Answer» D. Plastic cup manufacturing factory | |
| 12. |
The rising tube and the down coming tubes are the features of which type of fermenters? |
| A. | Bubble column |
| B. | Air-lift |
| C. | Packed bed |
| D. | Fluidized bed |
| Answer» C. Packed bed | |
| 13. |
Which part of fermenter is used for mixing process? |
| A. | Impeller |
| B. | Shaft |
| C. | Sparger |
| D. | Headspace |
| Answer» B. Shaft | |
| 14. |
Which type of fermenter is used in laboratory scale? |
| A. | Stirred tanks |
| B. | Shake-flask |
| C. | Bubble columns |
| D. | Air-lift fermenter |
| Answer» C. Bubble columns | |
| 15. |
Which of the following is not an antifoam agent? |
| A. | Surfactants |
| B. | Silicone oil |
| C. | Fluorosilicone |
| D. | Fatty alcohol |
| Answer» B. Silicone oil | |
| 16. |
Dispersion of gas in stirred vessels is largely independent of sparger design? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 17. |
What do you mean by “Impeller flooding”?$ |
| A. | The flooding of an impeller |
| B. | Gas handling is greater than the amount introduced |
| C. | Gas handling is smaller than the amount introduced |
| D. | Leakage of the Broth |
| Answer» D. Leakage of the Broth | |
| 18. |
Coalescence is appropriate for oxygen transfer in bubbles? |
| A. | True |
| B. | False |
| Answer» C. | |
| 19. |
Which size of bubbles is relevant for mass transfer? |
| A. | Small |
| B. | Very small |
| C. | Large |
| D. | Very large |
| Answer» B. Very small | |
| 20. |
The smaller bubbles are sensitive than larger bubbles? |
| A. | True |
| B. | False |
| Answer» B. False | |