MCQOPTIONS
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MCQOPTIONS
This section includes 19 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. |
What is endogenous respiration? |
| A. | Discrete use of oxygen |
| B. | Less use of oxygen |
| C. | Higher amount of oxygen production |
| D. | Continual use of oxygen |
| Answer» E. | |
| 2. |
The rate at which oxygen is dissolved into the water from the atmosphere is proportional to the deficit of oxygen in the water. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Oxygen in water is consumed during aerobic biodegradation of organic compounds. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
___________ means that a substance can be converted into simpler compounds by biologically mediated reactions. |
| A. | Non-biodegradable |
| B. | Biodegradable |
| C. | Dilution |
| D. | Assimilation |
| Answer» C. Dilution | |
| 5. |
C= x⁄vWhat does x stand for in the above formula? |
| A. | Particles |
| B. | Quantity |
| C. | Volume |
| D. | Area |
| Answer» B. Quantity | |
| 6. |
____________MEANS_THAT_A_SUBSTANCE_CAN_BE_CONVERTED_INTO_SIMPLER_COMPOUNDS_BY_BIOLOGICALLY_MEDIATED_REACTIONS.?$ |
| A. | Non-biodegradable |
| B. | Biodegradable |
| C. | Dilution |
| D. | Assimilation |
| Answer» C. Dilution | |
| 7. |
The rate at which oxygen is dissolved into the water from the atmosphere is proportional to the deficit of oxygen in the water.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Oxygen_in_water_is_consumed_during_aerobic_biodegradation_of_organic_compounds.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
During which of the following conditions, the deoxygenation is equal to reoxygenation? |
| A. | Stream exposed to atmosphere |
| B. | Increased volume |
| C. | Greener vegetation |
| D. | High temperature |
| Answer» B. Increased volume | |
| 10. |
When the deoxygenation rate exceeds the reoxygenation rate, the oxygen sag curve shows ________ in a deficit of oxygen. |
| A. | Increase |
| B. | Decrease |
| C. | Constant |
| D. | Same |
| Answer» B. Decrease | |
| 11. |
What_is_endogenous_respiration? |
| A. | Discrete use of oxygen |
| B. | Less use of oxygen |
| C. | Higher amount of oxygen production |
| D. | Continual use of oxygen |
| Answer» E. | |
| 12. |
What is the minimum amount of sample required to perform serial dilution? |
| A. | 1 ml |
| B. | 5 ml |
| C. | 2 ml |
| D. | 2.5 ml |
| Answer» B. 5 ml | |
| 13. |
Bacteria is diluted in __________ |
| A. | Distilled water |
| B. | Water |
| C. | Culture media |
| D. | Solution |
| Answer» D. Solution | |
| 14. |
A dilution is a process that increases the concentration of a substance in a solution. |
| A. | True |
| B. | False |
| Answer» C. | |
| 15. |
Which of the following is commonly used? |
| A. | Three – fold dilutions |
| B. | Ten – fold dilutions |
| C. | Five – fold dilutions |
| D. | Six – fold dilutions |
| Answer» C. Five ‚Äö√Ñ√∂‚àö√ë‚àö¬® fold dilutions | |
| 16. |
_________ is a step-wise and geometric series of dilutions which starts with a small amount of starting material. |
| A. | Simple dilution |
| B. | Serial dilution |
| C. | Continuous dilution |
| D. | Chemical dilution |
| Answer» C. Continuous dilution | |
| 17. |
Dilution factor is the reciprocal of dilution. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 18. |
Dilution=volume added/total volume. What does total volume indicate? |
| A. | Volume of the sample |
| B. | Volume of the sample including blank |
| C. | Volume of the sample excluding blank |
| D. | Volume of the blank |
| Answer» C. Volume of the sample excluding blank | |
| 19. |
C= x‚ÅÑv |
| A. | |
| B. | Particles |
| C. | Quantity |
| Answer» B. Particles | |