MCQOPTIONS
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MCQOPTIONS
This section includes 21 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. |
Which of these process is involved in the settling process in solid thickening facilities? |
| A. | Compression settling |
| B. | Hindered settling |
| C. | Accelerated gravity settling |
| D. | Flocculent settling |
| Answer» B. Hindered settling | |
| 2. |
How concentrated are the suspensions which are subjected to hindered settling? |
| A. | Low |
| B. | High |
| C. | Very high |
| D. | Medium |
| Answer» E. | |
| 3. |
Which of these process is involved in the removal of BOD and phosphorous? |
| A. | Flocculent settling |
| B. | Accelerated gravity settling |
| C. | Ballasted flocculent settling |
| D. | Compression settling |
| Answer» D. Compression settling | |
| 4. |
Which of these process is involved in the settling of particles in the secondary settling tanks? |
| A. | Flocculent settling |
| B. | Ballasted flocculent settling |
| C. | Compression settling |
| D. | Hindered settling |
| Answer» E. | |
| 5. |
Newton’s law is used for_______ |
| A. | Turbulent flows |
| B. | Non-turbulent flows |
| C. | Laminar flow |
| D. | Spiral flow |
| Answer» B. Non-turbulent flows | |
| 6. |
In Newton’s law for the settling of discrete particles, the particles size is _______ |
| A. | 1 mm |
| B. | Greater than 1 mm |
| C. | Less than 1 mm |
| D. | 0.5 mm |
| Answer» C. Less than 1 mm | |
| 7. |
WHICH_OF_THESE_PROCESS_IS_INVOLVED_IN_THE_SETTLING_OF_PARTICLES_IN_THE_SECONDARY_SETTLING_TANKS??$ |
| A. | Flocculent settling |
| B. | Ballasted flocculent settling |
| C. | Compression settling |
| D. | Hindered settling |
| Answer» E. | |
| 8. |
How concentrated are the suspensions which are subjected to hindered settling?$ |
| A. | Low |
| B. | High |
| C. | Very high |
| D. | Medium |
| Answer» E. | |
| 9. |
Which_of_these_process_is_involved_in_the_removal_of_BOD_and_phosphorous?$ |
| A. | Flocculent settling |
| B. | Accelerated gravity settling |
| C. | Ballasted flocculent settling |
| D. | Compression settling |
| Answer» D. Compression settling | |
| 10. |
How is the design velocity expressed mathematically for a discrete particle settling process? |
| A. | V<sub>c</sub> = depth/detention time |
| B. | V<sub>c</sub> = depth x detention time |
| C. | V<sub>c</sub> = depth/area |
| D. | V<sub>c</sub> = area /detention time |
| Answer» B. V<sub>c</sub> = depth x detention time | |
| 11. |
For a discrete particle settling which of these mathematical equations is true? |
| A. | Q= A Xv |
| B. | Q=A/V |
| C. | Q= A X t |
| D. | Q=A/t |
| Answer» B. Q=A/V | |
| 12. |
Which of these process are involved in the removal of oil and grease? |
| A. | Accelerated gravity settling |
| B. | Floatation |
| C. | Flocculent settling |
| D. | Compressed settling |
| Answer» C. Flocculent settling | |
| 13. |
Which_of_these_process_is_involved_in_the_settling_process_in_solid_thickening_facilities? |
| A. | Compression settling |
| B. | Hindered settling |
| C. | Accelerated gravity settling |
| D. | Flocculent settling |
| Answer» B. Hindered settling | |
| 14. |
Which of these process is involved in the removal of chemical flocs? |
| A. | Flocculent settling |
| B. | Ballasted flocculent settling |
| C. | Hindered settling |
| D. | Compression settling |
| Answer» B. Ballasted flocculent settling | |
| 15. |
In the discrete settling type which of these factors is a constant? |
| A. | velocity |
| B. | acceleration |
| C. | time taken to settle |
| D. | weight of the particles |
| Answer» C. time taken to settle | |
| 16. |
Grit and sand particles are removed from waste water by which type of settling? |
| A. | Flocculent settling |
| B. | Discrete particle settling |
| C. | Hindered settling |
| D. | Compression settling |
| Answer» C. Hindered settling | |
| 17. |
Non-spherical particles will settle _______ spherical particles. |
| A. | Slower than |
| B. | Faster than |
| C. | Equal as |
| D. | Same as |
| Answer» B. Faster than | |
| 18. |
The individual particle settling is hindered when the volumetric concentration is high. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 19. |
For laminar flow Reynolds number is 1. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 20. |
Newton’s law is used for_______$ |
| A. | Turbulent flows |
| B. | Non-turbulent flows |
| C. | Laminar flow |
| D. | Spiral flow |
| Answer» B. Non-turbulent flows | |
| 21. |
In Newton’s law for the settling of discrete particles, the particles size is _______ |
| A. | 1 mm |
| B. | Greater than 1 mm |
| C. | Less than 1 mm |
| D. | 0.5 mm |
| Answer» C. Less than 1 mm | |