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. |
BOD is a physical procedure for determining DO needed for aerobic biological organisms. |
| A. | tTrue |
| B. | tFalse |
| Answer» C. | |
| 2. |
How many types of BOD are present? |
| A. | t1 |
| B. | t2 |
| C. | t3 |
| D. | t4 |
| Answer» C. t3 | |
| 3. |
______ is removed by Anammox. |
| A. | tNitric oxides |
| B. | tNitrate |
| C. | tNitrite |
| D. | tAmmonia |
| Answer» E. | |
| 4. |
Which part of the tank is suitable for anaerobic bacteria to flourish? |
| A. | tTop |
| B. | tBottom |
| C. | tSides |
| D. | tMiddle zone |
| Answer» C. tSides | |
| 5. |
The _________ is usually the same length in time as the aeration. |
| A. | tScreening stage |
| B. | tMixing stage |
| C. | tClarification stage |
| D. | tSettling stage |
| Answer» E. | |
| 6. |
______ is used to remove phosphorus compounds from the liquor. |
| A. | tAluminium nitrate |
| B. | tAluminium phosphate |
| C. | tAluminium sulphate |
| D. | tSodium nitrate |
| Answer» D. tSodium nitrate | |
| 7. |
The multiplication of _________ is encouraged by the addition of oxygen. |
| A. | tBacteria |
| B. | tAerobic bacteria |
| C. | tAnaerobic bacteria |
| D. | tFungi |
| Answer» C. tAnaerobic bacteria | |
| 8. |
In which stage are the aeration and mixing avoided? |
| A. | tFirst |
| B. | tSecond |
| C. | tThird |
| D. | t Fourth |
| Answer» D. t Fourth | |
| 9. |
___________ helps to mix the incoming influent and the returned activated sludge. |
| A. | tWalls |
| B. | tOrifice |
| C. | tManifold |
| D. | tBio-selector |
| Answer» E. | |
| 10. |
Bio-selectors direct the flow. |
| A. | tTrue |
| B. | tFalse |
| Answer» B. tFalse | |
| 11. |
The one tank is aerating and filling while the other one is decant. |
| A. | tTrue |
| B. | tFalse |
| Answer» B. tFalse | |
| 12. |
SBR is a type of ________ |
| A. | tAerobic process |
| B. | tActivated sludge process |
| C. | tAnaerobic process |
| D. | tChemical process |
| Answer» C. tAnaerobic process | |