MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Waste Water Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Hydrolysis of chlorine in water has a rate constant of 11 s-1. What does this imply? |
| A. | It is a slow reaction. |
| B. | It is a moderate reaction |
| C. | It is a fast reaction |
| D. | It is a very slow reaction |
| Answer» D. It is a very slow reaction | |
| 2. |
The array of tubes or flat panels constitutes ________ in photo bioreactors. |
| A. | Light receiving systems |
| B. | Heating systems |
| C. | Cooling systems |
| D. | Radiation emitting systems |
| Answer» B. Heating systems | |
| 3. |
Which bioreactor is designed for fermentation? |
| A. | Photo bioreactors |
| B. | Continuous stirred tank bioreactors |
| C. | Fluidized bed bioreactor |
| D. | Airlift bioreactors |
| Answer» B. Continuous stirred tank bioreactors | |
| 4. |
Which of the following bioreactor consists of biocatalysts on or within the matrix of solids? |
| A. | Photo-bioreactors |
| B. | Packed bed bioreactors |
| C. | Airlift bioreactors |
| D. | Fluidized bed bioreactor |
| Answer» C. Airlift bioreactors | |
| 5. |
Which of the following reactors is comparable to bubble column bioreactor? |
| A. | Fluidized bed bioreactor |
| B. | Packed bed bioreactors |
| C. | Airlift bioreactors |
| D. | Continuous stirred tank bioreactors |
| Answer» B. Packed bed bioreactors | |
| 6. |
In which of the following bioreactors is the vessel divided into two interconnected zones? |
| A. | Bubble column bioreactors |
| B. | Airlift bioreactors |
| C. | Continuous stirred tank bioreactors |
| D. | Packed bed bioreactors |
| Answer» C. Continuous stirred tank bioreactors | |
| 7. |
The vessel used for bubble column bioreactors is _______ |
| A. | Square |
| B. | Rectangular |
| C. | Cylindrical |
| D. | Circular |
| Answer» D. Circular | |
| 8. |
In bubble column bioreactor, the flow rate of air/ gas influences the performance of oxygen transfer. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
The diameter of the impeller is usually 1/3 rd of the vessel diameter. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
What is the aspect ratio of a stirred tank bioreactor? |
| A. | 1-2 |
| B. | 2-3 |
| C. | 2-4 |
| D. | 3-5 |
| Answer» E. | |
| 11. |
In __________ reactor the bed is filled with a packing material that expands when wastewater moves upwards. |
| A. | Fluidized bed reactor |
| B. | Packed bed reactor |
| C. | Plug flow reactor |
| D. | Mix batch reactor |
| Answer» B. Packed bed reactor | |
| 12. |
In which of the following systems no flow is added or allowed to leave during the design detention time? |
| A. | Arbitrary flow reactor |
| B. | Fluidized bed reactor |
| C. | Mixed batch reactor |
| D. | Packed bed reactor |
| Answer» D. Packed bed reactor | |