MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 22 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. |
The treatment system includes a WAC, SAC, followed by a WBA and SBA. There is a degasser in this system. Calculate the amount of SBA resin required for the following data.M Alkalinity: 100 ppm as CaCO3P Alkalinity: 100 ppm as CaCO3Silica: 30 ppm as CaCO3CO2: 45 ppm as CaCO3EMA: 100 ppm as CaCO3Capacity: 37 Kg/m3Correction factor: 0.9Flow rate: 35 m3/hrOperation hours: 10 hrs |
| A. | 0.5 m3 |
| B. | 0.9 m3 |
| C. | 1.9 m3 |
| D. | 1.5 m3 |
| Answer» B. 0.9 m3 | |
| 2. |
The treatment system includes a WAC, SAC, followed by a WBA and SBA. There is no degasser in this system. Calculate the amount of resin required for the following information.M Alkalinity: 100 ppm as CaCO3P Alkalinity: 100 ppm as CaCO3Silica: 45 ppm as CaCO3CO2: 45 ppm as CaCO3Capacity: 37 Kg/m3Correction factor: 0.9Flow rate: 35 m3/hrOperation hours: 10 hrs |
| A. | 1.5 m3 |
| B. | 1.1 m3 |
| C. | 7.9 m3 |
| D. | 7.5 m3 |
| Answer» C. 7.9 m3 | |
| 3. |
The treatment system consists of a WAC, SAC which is followed by a WBA and SBA. Calculate the amount of WBA resin required for the following data.M Alkalinity: 100 ppm as CaCO3P Alkalinity: 100 ppm as CaCO3EMA: 25 ppm as CaCO3Capacity: 37 Kg/m3Correction factor: 0.9Flow rate: 135 m3/hrOperation hours: 20 hrs |
| A. | 2.5 m3 |
| B. | 2.8 m3 |
| C. | 1.2 m3 |
| D. | 7.5 m3 |
| Answer» D. 7.5 m3 | |
| 4. |
Calculate the SAC resin required for the following data. It should be noted that prior to the SAC, a WAC system is present.M Alkalinity: 100 ppm as CaCO3P Alkalinity: 100 ppm as CaCO3EMA: 50 ppm as CaCO3Capacity: 57 Kg/m3Correction factor: 0.9Flow rate: 135 m3/hrOperation hours: 20 hrs |
| A. | 4.5 m3 |
| B. | 6.9 m3 |
| C. | 5.7 m3 |
| D. | 7.5 m3 |
| Answer» C. 5.7 m3 | |
| 5. |
Calculate the amount of resin required for the following information.Cation Load: 100 ppm as CaCO3Capacity: 57 Kg/m3Correction factor: 0.9Flow rate: 135 m3/hrOperation hours: 20 hrs |
| A. | 4.5 m3 |
| B. | 5.3 m3 |
| C. | 7.9 m3 |
| D. | 7.5 m3 |
| Answer» C. 7.9 m3 | |
| 6. |
Calculate the amount of resin required for the following information.Cation Load: 80 ppm as CaCO3Capacity: 47 Kg/m3Correction factor: 0.9Flow rate: 135 m3/hrOperation hours: 20 hrs |
| A. | 4.5 m3 |
| B. | 4.8 m3 |
| C. | 0.6 m3 |
| D. | 2.5 m3 |
| Answer» C. 0.6 m3 | |
| 7. |
Calculate the amount of resin required for the following information.Cation Load: 30 ppm as CaCO3Capacity: 47 Kg/m3Correction factor: 0.9Flow rate: 135 m3/hrOperation hours: 20 hrs |
| A. | 1.5 m3 |
| B. | 1.8 m3 |
| C. | 0.6 m3 |
| D. | 2.5 m3 |
| Answer» C. 0.6 m3 | |
| 8. |
Calculate the amount of resin required for the following information.Cation Load: 10 ppm as CaCO3Capacity: 47 Kg/m3Correction factor: 0.9Flow rate: 135 m3/hrOperation hours: 20 hrs |
| A. | 0.5 m3 |
| B. | 1.5 m3 |
| C. | 0.6 m3 |
| D. | 2.5 m3 |
| Answer» D. 2.5 m3 | |
| 9. |
_________resins can neutralize strong bases. |
| A. | SAC |
| B. | WAC |
| C. | SBA |
| D. | WBA |
| Answer» B. WAC | |
| 10. |
Which is the year zeolite was used as ion exchange water softeners? |
| A. | 1900 |
| B. | 1905 |
| C. | 1925 |
| D. | 1945 |
| Answer» C. 1925 | |
| 11. |
What is the maximum operating flow for mixed bed units? |
| A. | 12 BV/h |
| B. | 13 BV/h |
| C. | 14 BV/h |
| D. | 15 BV/h |
| Answer» E. | |
| 12. |
WHAT_IS_THE_MAXIMUM_OPERATING_FLOW_FOR_MIXED_BED_UNITS??$ |
| A. | 12 BV/h |
| B. | 13 BV/h |
| C. | 14 BV/h |
| D. | 15 BV/h |
| Answer» E. | |
| 13. |
_________resins can neutralize strong bases.$ |
| A. | SAC |
| B. | WAC |
| C. | SBA |
| D. | WBA |
| Answer» B. WAC | |
| 14. |
Which_is_the_year_zeolite_was_used_as_ion_exchange_water_softeners?$ |
| A. | 1900 |
| B. | 1905 |
| C. | 1925 |
| D. | 1945 |
| Answer» C. 1925 | |
| 15. |
What is the minimum flow rate for water treatment? |
| A. | 5 m<sup>3</sup>/h per m<sup>3</sup> of resin |
| B. | 10 m<sup>3</sup>/h per m<sup>3</sup> of resin |
| C. | 15 m<sup>3</sup>/h per m<sup>3</sup> of resin |
| D. | 20 m<sup>3</sup>/h per m<sup>3</sup> of resin |
| Answer» B. 10 m<sup>3</sup>/h per m<sup>3</sup> of resin | |
| 16. |
The production run should be _______ the regeneration process. |
| A. | Shorter than |
| B. | Longer than |
| C. | Equal to |
| D. | Nearer to |
| Answer» E. | |
| 17. |
What is the maximum silica content in treated water from a regeneration system? |
| A. | 10 µg/L |
| B. | 15 µg/L |
| C. | 20 µg/L |
| D. | 25 µg/L |
| Answer» E. | |
| 18. |
What is the minimum flow rate for SAC resins? |
| A. | 25 m/h |
| B. | 30 m/h |
| C. | 40 m/h |
| D. | 50 m/h |
| Answer» B. 30 m/h | |
| 19. |
What is the acceptable pressure drop at maximum flow rate? |
| A. | 0.5 bar |
| B. | 1.5 bar |
| C. | 2 .5 bar |
| D. | 3.5 bar |
| Answer» C. 2 .5 bar | |
| 20. |
Macroporous resins are required for demineralisation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 21. |
The area ________ the breakthrough curve is equal to the maximum amount of ions removed by the column. |
| A. | Above |
| B. | Below |
| C. | At |
| D. | Above and below |
| Answer» B. Below | |
| 22. |
The breakthrough curves for ion exchange column and adsorption column are dissimilar. |
| A. | True |
| B. | False |
| Answer» C. | |