MCQOPTIONS
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MCQOPTIONS
This section includes 7 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 recirculation factor in a low rate trickling filter is ___________ |
| A. | 0 |
| B. | 1 |
| C. | 10 |
| D. | 100 |
| Answer» C. 10 | |
| 2. |
The hydrogen sulfide gas formed during the filtration of sewage can be removed by ___________ |
| A. | Carbonation |
| B. | Chlorination |
| C. | Addition of lime |
| D. | Titration with potassium dichromate |
| Answer» C. Addition of lime | |
| 3. |
The organic loading in a trickling filter is measured in ___________ |
| A. | m<sup>3</sup>/day |
| B. | gm/m<sup>2</sup>/day |
| C. | Kg/hectare-meter/day |
| D. | Kg/hectare/day |
| Answer» D. Kg/hectare/day | |
| 4. |
The removal of BOD is independent of the loading conditions in infiltration process. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
The efficiency of a percolating filter is given by ___________ |
| A. | 100/(1+0.0044 ( )) |
| B. | 100/(1+0.044 ( )<sup> 1/2</sup>) |
| C. | 100/(1+0.44 ( ) <sup>1/2</sup>) |
| D. | 100/(1+0.0044 ( ) <sup>1/2</sup>) |
| Answer» E. | |
| 6. |
The BOD after the filtration of sewage from the low rate trickling filter is ___________ |
| A. | 40-50% |
| B. | 80-90% |
| C. | 70-80% |
| D. | 90-99% |
| Answer» C. 70-80% | |
| 7. |
The minimum hydraulic loading of percolating filter is ___________ |
| A. | 1 m<sup>3</sup>/m<sup>2</sup>/day |
| B. | 2 m<sup>3</sup>/m<sup>2</sup>/day |
| C. | 3 m<sup>3</sup>/m<sup>2</sup>/day |
| D. | 4 m<sup>3</sup>/m<sup>2</sup>/day |
| Answer» B. 2 m<sup>3</sup>/m<sup>2</sup>/day | |