MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
IN_WHICH_OF_THE_FOLLOWING_SEDIMENTATION_TANKS,_THE_FLOW_MAY_BE_EITHER_HORIZONTAL_OR_VERTICAL??$ |
| A. | Circular |
| B. | Rectangular |
| C. | Fill and draw type |
| D. | Continuous flow |
| Answer» E. | |
| 2. |
The vertical type of sedimentation tanks are usually in _________ shape.$ |
| A. | Circular |
| B. | Rectangular |
| C. | Semi-circular |
| D. | Cylindrical |
| Answer» B. Rectangular | |
| 3. |
What is the maximum permissible velocity in horizontal flow type sedimentation tank?$ |
| A. | 0.2 m/s |
| B. | 0.3 m/s |
| C. | 0.5 m/s |
| D. | 1 m/s |
| Answer» C. 0.5 m/s | |
| 4. |
________ is provided after activated sludge process. |
| A. | Primary sedimentation tank |
| B. | Flocculation tank |
| C. | Secondary sedimentation tank |
| D. | Sand filter |
| Answer» D. Sand filter | |
| 5. |
Sludge is disposed through _______ |
| A. | Hopper bottom |
| B. | Sludge pump |
| C. | Deflector |
| D. | Launder |
| Answer» C. Deflector | |
| 6. |
Why are the baffle walls provided? |
| A. | Prevent short circuit |
| B. | Abstruct flow |
| C. | Reduce velocity |
| D. | Collect sediment |
| Answer» B. Abstruct flow | |
| 7. |
How many hours does the removing of Settleable particles require in fill and draw type of sedimentation tanks? |
| A. | 3-6 |
| B. | 6-9 |
| C. | 6-12 |
| D. | 12-15 |
| Answer» D. 12-15 | |
| 8. |
What is the time period for which the water is stored in fill and draw type of sedimentation tank? |
| A. | 48 hours |
| B. | 24 hours |
| C. | 52 hours |
| D. | 76 hours |
| Answer» C. 52 hours | |
| 9. |
How many types of sedimentation tanks are present based on the shape of the tank? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |
| 10. |
How many types of sedimentation tanks are there based on the method of operation? |
| A. | 2 |
| B. | 4 |
| C. | 5 |
| D. | 7 |
| Answer» B. 4 | |
| 11. |
What is the accumulated layer at the bottom of the tank called as? |
| A. | Flocs |
| B. | Sediment |
| C. | Sludge |
| D. | Sewage |
| Answer» D. Sewage | |
| 12. |
Sedimentation tank is also called as settling tank. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
The tanks built with mechanical means for continuous removal of solids being deposited by sedimentation are called _________ |
| A. | Clarifiers |
| B. | Settling basins |
| C. | Sedimentation tanks |
| D. | Eco-pons |
| Answer» B. Settling basins | |
| 14. |
What are the ponds constructed for removing entrained solids called? |
| A. | Clarifiers |
| B. | Settling basins |
| C. | Eco-ponds |
| D. | Ditches |
| Answer» C. Eco-ponds | |
| 15. |
Sedimentation is a process using gravity to remove suspended solids from water. |
| A. | True |
| B. | False |
| Answer» B. False | |