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. |
Calculate the amount of air required for the equalization tank with the following details
|
| A. | nBOD load: 800 mg/L |
| B. | t950 m<sup>3</sup>/hr |
| C. | t800 m<sup>3</sup>/hr |
| D. | t2000 m<sup>3</sup>/hr |
| E. | t785 m<sup>3</sup>/hr |
| Answer» D. t2000 m<sup>3</sup>/hr | |
| 2. |
Calculate the number of fine diffusers required for the following data.
|
| A. | nBOD load: 1000 mg/L |
| B. | t150 |
| C. | t146 |
| D. | t170 |
| E. | t186 |
| Answer» C. t146 | |
| 3. |
Calculate the number of diffusers for the following.
|
| A. | nCoarse diffusers are used. |
| B. | t54 |
| C. | t60 |
| D. | t65 |
| E. | t70 |
| Answer» B. t54 | |
| 4. |
Calculate the amount of air required for the following details.
|
| A. | nBOD load: 800 mg/L |
| B. | t550 m<sup>3</sup>/hr |
| C. | t518 m<sup>3</sup>/hr |
| D. | t700m<sup>3</sup>/hr |
| E. | t618 m<sup>3</sup>/hr |
| Answer» D. t700m<sup>3</sup>/hr | |
| 5. |
Calculate the theoretical oxygen requirement for the following details.
|
| A. | nBOD load: 800 mg/L |
| B. | t45.5 Kg/h of O<sub>2</sub>/hr |
| C. | t23.05 Kg/h of O<sub>2</sub>/hr |
| D. | t25.05 Kg/h of O<sub>2</sub>/hr |
| E. | t50.5 Kg/h of O<sub>2</sub>/hr |
| Answer» C. t23.05 Kg/h of O<sub>2</sub>/hr | |
| 6. |
What is the value for for mechanical aeration aeration for the following equation.
|
| A. | t0.6-1.2 |
| B. | t0.2-0.3 |
| C. | t0.3-0.5 |
| D. | t>1.2 |
| Answer» B. t0.2-0.3 | |
| 7. |
What is the value for for diffused aeration for the following equation.
|
| A. | t0.4-0.8 |
| B. | t0.2-0.3 |
| C. | t0.8-1 |
| D. | t>1 |
| Answer» B. t0.2-0.3 | |
| 8. |
What is the value for for mechanical and diffused aeration for the following equation?
|
| A. | t1.015 |
| B. | t1.1 |
| C. | t1.024 |
| D. | t1.04 |
| Answer» D. t1.04 | |
| 9. |
How many types of aerators are present? |
| A. | t2 |
| B. | t3 |
| C. | t4 |
| D. | t5 |
| Answer» D. t5 | |
| 10. |
Which of the following is not used for iron removal? |
| A. | tOxidation |
| B. | tReduction |
| C. | tGasification |
| D. | tAbsorption |
| Answer» C. tGasification | |
| 11. |
H2S is highly soluble in water. |
| A. | tTue |
| B. | tFalse |
| Answer» B. tFalse | |
| 12. |
What does OTR stand for? |
| A. | tOxygen transfer rate in standard conditions |
| B. | tOxygen transfer rate in clean water |
| C. | tOxygen transfer efficiency in clean water |
| D. | tOxygen transfer efficiency in standard conditions in the clean water |
| Answer» C. tOxygen transfer efficiency in clean water | |