MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Biomass Energy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Gases emitted from the digester indicates the amount of biomass left to be broken down. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
What are the two main products of anaerobic digestion? |
| A. | Carbon monoxide and hydrogen |
| B. | Methane and carbon dioxide |
| C. | Methane and carbon monoxide |
| D. | Hydrogen and carbon dioxide |
| Answer» C. Methane and carbon monoxide | |
| 3. |
Methanogens can directly use the products of hydrolysis to produce methane. |
| A. | False |
| B. | True |
| Answer» B. True | |
| 4. |
What are the two ways to produce methane in methanogenesis step? |
| A. | Converting carbon monoxide and carbon dioxide into methane |
| B. | Converting carbon monoxide and acetic acid (or acetate) into methane |
| C. | Converting methane into carbon monoxide and carbon dioxide |
| D. | Converting carbon dioxide and acetic acid (or acetat |
| E. | into methanec) Converting methane into carbon monoxide and carbon dioxided) Converting carbon dioxide and acetic acid (or acetate) into methane |
| Answer» E. into methanec) Converting methane into carbon monoxide and carbon dioxided) Converting carbon dioxide and acetic acid (or acetate) into methane | |
| 5. |
Which of the following is produced apart from acetates in acetogenesis step in anaerobic digestion? |
| A. | Carbon monoxide |
| B. | Charcoal |
| C. | Carbon dioxide |
| D. | Acetone |
| Answer» D. Acetone | |
| 6. |
Which of the following is produced in acetogenesis? |
| A. | Ethanol |
| B. | Acetate |
| C. | Acetone |
| D. | Ketone |
| Answer» C. Acetone | |
| 7. |
Acidogenesis further break down the molecules received from hydrolysis in anaerobic digestion. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
What occurs in the hydrolysis step of anaerobic digestion? |
| A. | Large polymers combine with water molecules |
| B. | Large polymers break down to form water molecules |
| C. | Small polymers combine to form large polymers with the help of water molecules |
| D. | Large polymers break down into amino acids, fatty acids and simple sugars |
| Answer» E. | |
| 9. |
Which of the following best indicates the steps inside an anaerobic digester? |
| A. | Hydrolysis → methanogenesis → acetogenesis → acidogenesis |
| B. | Hydrolysis → acidogenesis → methanogenesis → acetogenesis |
| C. | Hydrolysis → acidogenesis → acetogenesis → methanogenesis |
| D. | Methanogenesis → acidogenesis → acetogenesis → hydrolysis |
| Answer» D. Methanogenesis → acidogenesis → acetogenesis → hydrolysis | |
| 10. |
Which of the following best indicates the steps of anaerobic digestion? |
| A. | Waste water feed → biogas storage → generator → biogas |
| B. | Waste water feed → digester → biogas → biogas storage → generator |
| C. | Generator → waste water feed → digester → biogas → biogas storage |
| D. | Waste water feed → biogas → digester → biogas storage → generator |
| Answer» C. Generator → waste water feed → digester → biogas → biogas storage | |
| 11. |
Which of the following is used to produce biogas from biomass? |
| A. | Anaerobic treatment |
| B. | Aerobic treatment |
| C. | Fermentation |
| D. | Pyrolysis |
| Answer» B. Aerobic treatment | |
| 12. |
Which among the following is the best source for methane production? |
| A. | Metallic scrap |
| B. | E-waste |
| C. | Plastic waste |
| D. | Water hyacinth |
| Answer» E. | |
| 13. |
What are the categories for organic dry matter on the basis of total solids (TS)? |
| A. | Low grade, medium grade, high grade and fixed bed |
| B. | Low grade, medium grade, fluidized bed and fixed bed |
| C. | Low grade, medium grade, high grade and solids |
| D. | Downdraft, circulation fluidized bed, high grade and fixed bed |
| Answer» D. Downdraft, circulation fluidized bed, high grade and fixed bed | |
| 14. |
Which of the following is a preferred substrate for biogas production? Note that TS stands for total solids. |
| A. | Less than 1% TS |
| B. | 20-40% TS |
| C. | 1-5% TS |
| D. | 5-10% TS |
| Answer» C. 1-5% TS | |
| 15. |
Which of the following is a substrate for biogas production? |
| A. | Municipal and residential waste |
| B. | E-waste |
| C. | Metallic waste |
| D. | Gaseous effluents |
| Answer» B. E-waste | |