MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Hazardous Waste Management knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
__________ is required for complete mineralization of hazardous waste. |
| A. | Metabolic interaction |
| B. | Chemical analysis |
| C. | Recalcitrant |
| D. | Toxic removal |
| Answer» B. Chemical analysis | |
| 2. |
In aerobic treatment, microbes need carbon source. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Higher loading level increase BOD removal efficiency. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
The concentration of microorganisms in the digestion tank is measured as _________ |
| A. | MLSS |
| B. | MLC |
| C. | MLD |
| D. | MKLS |
| Answer» B. MLC | |
| 5. |
The temperature range for aerobic process is __________ degree Celsius. |
| A. | 10-20 |
| B. | 10-30 |
| C. | 10-40 |
| D. | 10-50 |
| Answer» C. 10-40 | |
| 6. |
______IS_REQUIRED_FOR_COMPLETE_MINERALIZATION_OF_HAZARDOUS_WASTE.?$ |
| A. | Metabolic interaction |
| B. | Chemical analysis |
| C. | Recalcitrant |
| D. | Toxic removal |
| Answer» B. Chemical analysis | |
| 7. |
In aerobic treatment, microbes need carbon source. True or False? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
What is the average retention time in aerobic treatment system? |
| A. | 20 minutes |
| B. | 10 minutes |
| C. | 30 minutes |
| D. | 40 minutes |
| Answer» B. 10 minutes | |
| 9. |
What is the organic loading rate in aerobic fixed culture systems? |
| A. | 1-9 kg BOD/m<sup>3</sup> |
| B. | 1-7 kg BOD/m<sup>3</sup> |
| C. | 1-8 kg BOD/m<sup>3</sup> |
| D. | 1-5 kg BOD/m<sup>3</sup> |
| Answer» D. 1-5 kg BOD/m<sup>3</sup> | |
| 10. |
Higher loading level increase BOD removal efficiency. True or False. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Which of the following is function of the MLSS content of the hazardous waste liquor? |
| A. | BOD loading |
| B. | COD loading |
| C. | MLSS loading |
| D. | VLS loading |
| Answer» B. COD loading | |
| 12. |
The concentration of microorganisms in the digestion tank is measured as ____ |
| A. | MLSS |
| B. | MLC |
| C. | MLD |
| D. | MKLS |
| Answer» B. MLC | |
| 13. |
The temperature range for aerobic process is _____ degree Celsius. |
| A. | 10-20 |
| B. | 10-30 |
| C. | 10-40 |
| D. | 10-50 |
| Answer» C. 10-40 | |
| 14. |
What is the minimum oxygen requirement to promote growth of aerobic bacteria? |
| A. | 0.2 ppm |
| B. | 0.3 ppm |
| C. | 0.4 ppm |
| D. | 0.5 ppm |
| Answer» E. | |