MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Environmental Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The sedimentation basin should be made as deep as possible. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Detention time for a circular tank is given by _______ |
| A. | t = D (D + 0.785H) /Q |
| B. | t = D (0.1D + 0.785H) /Q |
| C. | t = D2 (0.01D + 0.785H) |
| D. | t = D2 (0.01D + 0.785H) /Q |
| Answer» E. | |
| 3. |
The design value of surface loading for horizontal flow circular sedimentation is _______ |
| A. | 30-40m<sup>3</sup>/m<sup>2</sup>/d |
| B. | 20-30m<sup>3</sup>/m<sup>2</sup>/d |
| C. | 10-20m<sup>3</sup>/m<sup>2</sup>/d |
| D. | 50-100m<sup>3</sup>/m<sup>2</sup>/d |
| Answer» B. 20-30m<sup>3</sup>/m<sup>2</sup>/d | |
| 4. |
The detention period of the vertical flow clarifier is _______ |
| A. | 1-1.5 |
| B. | 2 |
| C. | 3.5 |
| D. | 4 |
| Answer» B. 2 | |
| 5. |
What will be the surface area of the basin for a flow of 2*106 litre per day having a surface loading rate 10,000 litre/day/m2? |
| A. | 100 |
| B. | 200 |
| C. | 300 |
| D. | 400 |
| Answer» C. 300 | |
| 6. |
1cm per second settling velocity corresponds to a surface loading of ______ litre per day per m2. |
| A. | 36000 |
| B. | 864000 |
| C. | 24000 |
| D. | 6000 |
| Answer» C. 24000 | |
| 7. |
The quantity of water flowing per hour per unit horizontal area is called ________ |
| A. | Detention time |
| B. | Flowing through period |
| C. | Displacement time |
| D. | Overflow rate |
| Answer» E. | |
| 8. |
Range of Displacement efficiency in the plain sedimentation tank is ___________ |
| A. | 0.25-0.5 |
| B. | 0.1-0.2 |
| C. | 0.5-0.8 |
| D. | 0.3-0.6 |
| Answer» B. 0.1-0.2 | |
| 9. |
The detention period of a rectangular tank is given by _______ |
| A. | t0 = LBH/Q |
| B. | t0 = LB/HQ |
| C. | t0 = Q/LBH |
| D. | t0 = HQ/LB |
| Answer» B. t0 = LB/HQ | |