MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Energy Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Solid remnants of the original input material to the digesters are called ________ |
| A. | Ordure |
| B. | Egests |
| C. | Digestate |
| D. | Manure |
| Answer» D. Manure | |
| 2. |
Product of anaerobic decomposition involves ___________ |
| A. | Methane |
| B. | Lactic acid |
| C. | Oxygen |
| D. | Alcohol |
| Answer» B. Lactic acid | |
| 3. |
What is C3H7O6P? |
| A. | Glyceraldehydes’ 3-phosphate |
| B. | 3-bisphosphoglycerate |
| C. | NADPH |
| D. | Tryptophan |
| Answer» B. 3-bisphosphoglycerate | |
| 4. |
What is ADP stand for? |
| A. | Adenosine terra phosphate |
| B. | NADPH |
| C. | Adenosine pyrophosphate |
| D. | Adenosine tri-phosphate |
| Answer» D. Adenosine tri-phosphate | |
| 5. |
The central part of an anaerobic plant in an enclosed tank is known as ____________ |
| A. | Pit |
| B. | Digester |
| C. | Mixer |
| D. | Feeder |
| Answer» C. Mixer | |
| 6. |
How much percentage of solid content is present in anaerobic digestion? |
| A. | 8% |
| B. | 2% |
| C. | 32% |
| D. | 50% |
| Answer» B. 2% | |
| 7. |
Too nitrogen will cause ____________ |
| A. | Poisonous gases |
| B. | Reduction in fertility of mixture |
| C. | Reduction in quantity of mixture |
| D. | Mixture to harden |
| Answer» C. Reduction in quantity of mixture | |
| 8. |
Which is the most suitable temperature for the production of methane in anaerobic fermentation? |
| A. | 32 – 35oC |
| B. | 18 – 26oC |
| C. | 40 – 48oC |
| D. | 10 – 15oC |
| Answer» B. 18 – 26oC | |
| 9. |
Below which temperature the action off digesting bacteria decreases? |
| A. | 16oC |
| B. | 35oC |
| C. | 28oC |
| D. | 0oC |
| Answer» B. 35oC | |
| 10. |
Which amount is the ideal carbon-nitrogen ratio for the raw material into a biogas plant? |
| A. | 30: 1 |
| B. | 20: 10 |
| C. | 5: 15 |
| D. | 1: 8 |
| Answer» B. 20: 10 | |
| 11. |
In what PH range does anaerobic digestion occurs at best? |
| A. | 6.8 – 8.0 |
| B. | 0 – 5.0 |
| C. | 2.3 – 4.5 |
| D. | 3.5 – 7.2 |
| Answer» B. 0 – 5.0 | |
| 12. |
Anaerobic fermentation is how many staged process? |
| A. | Single stage |
| B. | Two – stage |
| C. | 3-stage |
| D. | 4 – stage |
| Answer» C. 3-stage | |
| 13. |
Which decomposition process produces Carbon dioxide and methane? |
| A. | Aerobic decomposition |
| B. | Anaerobic decomposition |
| C. | Thermolysis |
| D. | Thermal decomposition |
| Answer» C. Thermolysis | |
| 14. |
Which decomposition process produces carbon dioxide and ammonia? |
| A. | Aerobic decomposition |
| B. | Anaerobic decomposition |
| C. | Thermolysis |
| D. | Thermal decomposition |
| Answer» B. Anaerobic decomposition | |
| 15. |
How many types of basic organic decomposition occur in Biomass energy conversion? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |