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. |
For high viscous fluids, air-driven reactors are preferred over stirred vessels. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
For deep-shaft systems the height-to-diameter ratio may be increased up to 100. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Which of the following is the function of draft tube? |
| A. | Decrease the pressure |
| B. | Increase the velocity |
| C. | Maximize kinetic energy |
| D. | Minimize kinetic energy |
| Answer» D. Minimize kinetic energy | |
| 4. |
Airlift reactors generally do not provide better mixing than bubble columns. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
Mixing is usually better in external-loop than internal-loop reactors in air-lift reactors. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
WHICH_OF_THE_FOLLOWING_IS_THE_FUNCTION_OF_DRAFT_TUBE??$ |
| A. | Decrease the pressure |
| B. | Increase the velocity |
| C. | Maximize kinetic energy |
| D. | Minimize kinetic energy |
| Answer» D. Minimize kinetic energy | |
| 7. |
AIRLIFT_REACTORS_GENERALLY_DO_NOT_PROVIDE_BETTER_MIXING_THAN_BUBBLE_COLUMNS.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
For high viscous fluids, air-driven reactors are preferred over stirred vessels.$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
For deep-shaft systems the height-to-diameter ratio may be increased up to 100.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Baffles are not needed in Up and down agitation bioreactor. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
Microcarrier beads can be used in __________ |
| A. | Fluidized-bed |
| B. | Stirred vessel |
| C. | Packed-bed |
| D. | Trickle-bed |
| Answer» B. Stirred vessel | |
| 12. |
In which of the following bioreactors, the particles are not immersed in liquid? |
| A. | Air-lift reactor |
| B. | Stirred vessel |
| C. | Packed-bed |
| D. | Trickle-bed |
| Answer» E. | |
| 13. |
Mixing is usually better in external-loop than internal-loop reactors in air-lift reactors? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
Mechanical agitation is required only in ____________ |
| A. | Packed bed |
| B. | Airlift reactor |
| C. | Stirred tank |
| D. | Bubble column |
| Answer» D. Bubble column | |
| 15. |
Backmixing of gas occurs in homogenous flow in bubble column. |
| A. | True |
| B. | False |
| Answer» C. | |
| 16. |
Mechanical foam breaker is generally preferred over antifoam agents. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 17. |
Which material is disengaged in the disengagement zone? |
| A. | Culture broth |
| B. | Culture media |
| C. | Bubbles |
| D. | Microbes |
| Answer» D. Microbes | |
| 18. |
The reverse of Hydraulic Retention Time [HRT] is the ________ |
| A. | Sedimentation rate |
| B. | Dilution rate |
| C. | Filtration rate |
| D. | Chemical rate |
| Answer» C. Filtration rate | |
| 19. |
What is the unit of influent flow rate? |
| A. | m d |
| B. | m/d |
| C. | m<sup>2</sup>/d |
| D. | m<sup>3</sup>/d |
| Answer» E. | |
| 20. |
Which type of reactor, aeration is generally accomplished in a separate vessel? |
| A. | Fluidised bed |
| B. | Trickle bed |
| C. | Packed bed |
| D. | Stirred and air-driven reactors |
| Answer» D. Stirred and air-driven reactors | |