MCQOPTIONS
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MCQOPTIONS
This section includes 74 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. |
What is ADP stand for? |
| A. | Adenosine terra phosphate |
| B. | NADPH |
| C. | Adenosine pyrophosphate |
| D. | Adenosine tri-phosphate |
| Answer» D. Adenosine tri-phosphate | |
| 2. |
The Gas storage chamber of the digester of janata model is designed to store what percentage og daily gas? |
| A. | 0.05 |
| B. | 0.19 |
| C. | 0.33 |
| D. | 0.58 |
| Answer» D. 0.58 | |
| 3. |
What does excess availability of nitrogen lead? |
| A. | NO3 |
| B. | NO2 |
| C. | NH3 |
| D. | NH4 |
| Answer» D. NH4 | |
| 4. |
Which is the third stage of anaerobic digestion? |
| A. | Acetogenesis |
| B. | Methanogenesis |
| C. | Acidogenesis |
| D. | Hydrolysis |
| Answer» B. Methanogenesis | |
| 5. |
What is used to decompose organic matter in absence of oxygen in closed reactors? |
| A. | Slugs |
| B. | Fungi |
| C. | Natural consortia |
| D. | Methane |
| Answer» D. Methane | |
| 6. |
Higher loading rates have been used when the ambient temperature is ____________ |
| A. | High |
| B. | Low |
| C. | At 0o |
| D. | At medium temperature |
| Answer» B. Low | |
| 7. |
Which type of bio products include Antifreeze, plastics, glues, artificial sweeteners, and gel for toothpaste? |
| A. | Bio products made from sugars |
| B. | Bio products made by waste products |
| C. | Bio products made from decomposition |
| D. | Bio products made from catalytic cracking |
| Answer» B. Bio products made by waste products | |
| 8. |
How is the inlet pipe of KVIC made? |
| A. | Cement mortar |
| B. | Asbestos cement concrete |
| C. | White cement |
| D. | PVC |
| Answer» C. White cement | |
| 9. |
Which gasifier has a minimum tar converting capability? |
| A. | Counter current gasifier |
| B. | Cross draught gasifier |
| C. | Co-current gasifier |
| D. | Fluidized bed gasifier |
| Answer» C. Co-current gasifier | |
| 10. |
Complete the following reaction: H2O + CO2 → |
| A. | 6H2O + 6CO2 → C6H12O6 + 6O2 |
| B. | 6H2O + 3CO2 → C6H6O6 + 4O2 |
| C. | 6H2O + 6CO2 → C6H12O12 + 12O2 |
| D. | 6H2O + 4CO2 → C+ HO3 |
| Answer» B. 6H2O + 3CO2 → C6H6O6 + 4O2 | |
| 11. |
The upper portion of the ______________ is in the shape of bell mouth and constructed using bricks and cements mortar in fixed dome plant. |
| A. | gas storage chamber |
| B. | inlet chamber |
| C. | outlet chamber |
| D. | digester |
| Answer» C. outlet chamber | |
| 12. |
The use of biomass energy has the potential to greatly reduce greenhouse gas emissions. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
Which plant has fixed hemi-spherical roof? |
| A. | Fixed dome plant |
| B. | Floating drum plant |
| C. | Chinese plant |
| D. | Flexible bag biogas plant |
| Answer» B. Floating drum plant | |
| 14. |
The outer chamber upper is called as ______ |
| A. | outlet displacement chamber |
| B. | outlet discharge chamber |
| C. | outlet density chamber |
| D. | outlet dwell chamber |
| Answer» B. outlet discharge chamber | |
| 15. |
Which type of valve is used to prevent air being drawn into the digester? |
| A. | Non return valve |
| B. | Poppet vale |
| C. | Return valve |
| D. | Check valve |
| Answer» B. Poppet vale | |
| 16. |
What type of movement does a biogas holder of KVIC has? |
| A. | Linear Movement |
| B. | Transverse movement |
| C. | Rotary movement |
| D. | Circular movement |
| Answer» D. Circular movement | |
| 17. |
______________ is a major factor in determining the methane yield and methane production rates from the digestion of biomass. |
| A. | Seeding |
| B. | Contamination |
| C. | Substrate composition |
| D. | Moisture content |
| Answer» D. Moisture content | |
| 18. |
Cow manure is rich in __________ |
| A. | Hydrogen |
| B. | Phosphorus |
| C. | Nitrogen |
| D. | Potassium |
| Answer» D. Potassium | |
| 19. |
In which type of plant the weight needs to be added on top to build the desired pressure? |
| A. | Flexible Bag biogas plant |
| B. | Fixed dome biogas plant |
| C. | Floating drum biogas plant |
| D. | Khadi and village industries type biogas plant |
| Answer» B. Fixed dome biogas plant | |
| 20. |
The ____________ is made of bricks and cement mortar and it's inside wall are plastered with a mixture of cement and sand. |
| A. | Foundation |
| B. | DigesterC) Gas holderd) Inlet and outlet pipe |
| Answer» C. | |
| 21. |
C6H12O6 is a _________ |
| A. | Osmophile |
| B. | Trapiche |
| C. | Sugar |
| D. | Butanol fuel |
| Answer» D. Butanol fuel | |
| 22. |
How many weeks does a batch digester need to produce biogas? |
| A. | 1 week |
| B. | 2 - 4 week |
| C. | 12 week |
| D. | 4 – 8 week |
| Answer» C. 12 week | |
| 23. |
Which of the following salt group is stimulatory or toxic in action? |
| A. | Sodium, potassium, calcium and magnesium |
| B. | Copper, zinc, sodium and magnesium |
| C. | Copper, calcium, magnesium and potassium |
| D. | Sodium, magnesium, zinc, and potassium |
| Answer» B. Copper, zinc, sodium and magnesium | |
| 24. |
With a mesophilic flora digestion precedes best at what temperature? |
| A. | 30 - 40oC |
| B. | 65 - 75oC |
| C. | 10 - 30oC |
| D. | 10 -15oC |
| Answer» B. 65 - 75oC | |
| 25. |
Which decomposition process produces Carbon dioxide and methane? |
| A. | Aerobic decomposition |
| B. | Anaerobic decomposition |
| C. | Thermolysis |
| D. | Thermal decomposition |
| Answer» C. Thermolysis | |
| 26. |
What is Ethanol called? |
| A. | Phenol |
| B. | Alcohol |
| C. | Amino acid |
| D. | Butanol |
| Answer» C. Amino acid | |
| 27. |
What is the major disadvantage of batch plants? |
| A. | Their output is not steady |
| B. | Comes to frequent breakdown |
| C. | They are not efficient |
| D. | They are very costly |
| Answer» B. Comes to frequent breakdown | |
| 28. |
What type of fire system is used in Bio power? |
| A. | Hand firing |
| B. | Mechanical stoke firing |
| C. | Direct firing |
| D. | Indirect firing |
| Answer» D. Indirect firing | |
| 29. |
Which gasifier has better tar converting capacity? |
| A. | Counter current gasifier |
| B. | Cross draught gasifier |
| C. | Co-current gasifier |
| D. | Fluidized bed gasifier |
| Answer» D. Fluidized bed gasifier | |
| 30. |
How is the outlet pipe of KVIC made? |
| A. | Cement mortar |
| B. | Asbestos cement concrete |
| C. | White cement |
| D. | PVC |
| Answer» C. White cement | |
| 31. |
From what material is biogas holder drum made? |
| A. | Mild steel |
| B. | Cast iron |
| C. | Aluminum alloys |
| D. | Rot iron |
| Answer» B. Cast iron | |
| 32. |
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 | |
| 33. |
Which is an organic matter produced by plants in direct or indirect forms? |
| A. | Solar energy |
| B. | Biomass |
| C. | Wind energy |
| D. | Bio-fuel |
| Answer» C. Wind energy | |
| 34. |
How are systems intended for the digestions are filled and emptied? |
| A. | Manually |
| B. | By evaporation |
| C. | By pumps and pipes |
| D. | By channels and pits |
| Answer» D. By channels and pits | |
| 35. |
For minimum of how many days within starting of fermentation, initiates anaerobic bacterial action? |
| A. | 2 |
| B. | 10 |
| C. | 14 |
| D. | 20 |
| Answer» C. 14 | |
| 36. |
Khadi village industries type biogas plant is example of _________ |
| A. | flexible Bag biogas plant |
| B. | fixed dome biogas plant |
| C. | floating drum biogas plant |
| D. | semi-batch type |
| Answer» D. semi-batch type | |
| 37. |
__________ is made by combining alcohol with vegetable oil, animal fat or recycled cooking grease. |
| A. | Biodiesel |
| B. | Biomass |
| C. | Bioelectricity |
| D. | Syngas |
| Answer» B. Biomass | |
| 38. |
How is potential toxicity, due to ammonia is corrected? |
| A. | By dilution |
| B. | By adding urea |
| C. | By adjusting the temperature |
| D. | By adding extra carbon rich content |
| Answer» B. By adding urea | |
| 39. |
Which types of plants are filled and then emptied completely after fixed retention time? |
| A. | Batch plants |
| B. | Continuous plants |
| C. | Floating gas holder plants |
| D. | Flexible bag biogas plant |
| Answer» B. Continuous plants | |
| 40. |
Which of the following waste produces more gases comparatively? |
| A. | Vegetable matter |
| B. | Cow dung |
| C. | Plant waste |
| D. | Organic waste from industry |
| Answer» B. Cow dung | |
| 41. |
What is the full form of TVS? |
| A. | Tempered volatile solid |
| B. | Total variant solid |
| C. | Total volatile solid |
| D. | Termed variant solid |
| Answer» D. Termed variant solid | |
| 42. |
Which of the following matter has a much higher carbon - nitrogen ratio? |
| A. | Vegetable matter |
| B. | Cow dung |
| C. | Plant waste |
| D. | Organic waste from industry |
| Answer» B. Cow dung | |
| 43. |
What type of energy is biomass energy? |
| A. | Conventional energy |
| B. | Non renewable |
| C. | Commercial energy |
| D. | Sustainable energy |
| Answer» E. | |
| 44. |
What is C3H7O6P ? |
| A. | Glyceraldehydes' 3-phosphate |
| B. | 3-bisphosphoglycerate |
| C. | NADPH |
| D. | Tryptophan |
| Answer» B. 3-bisphosphoglycerate | |
| 45. |
The anaerobic digestion can be inhibited? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 46. |
How is the Biogas outlet pipe of KVIC made? |
| A. | Cement |
| B. | PVC |
| C. | Asbestos |
| D. | GI pipe |
| Answer» E. | |
| 47. |
Which among the following best suitable treatment of waste products? |
| A. | Aerobic fermentation |
| B. | Anaerobic fermentation |
| C. | Autolysis |
| D. | Thermal reaction |
| Answer» C. Autolysis | |
| 48. |
What is the full form of PSD in Biomass Energy? |
| A. | Post source decay |
| B. | Particle size distribution |
| C. | Polystyrene deuterated |
| D. | Post synaptic density |
| Answer» C. Polystyrene deuterated | |
| 49. |
What does natural decay of biomass produces? |
| A. | Ozone |
| B. | Methane |
| C. | Ethane |
| D. | Hydrogen |
| Answer» C. Ethane | |
| 50. |
What is the weight of biogas holder? |
| A. | 8-10 kg/m2 |
| B. | 10-15 kg/m2 |
| C. | 8-18 kg/m2 |
| D. | 25-30 kg/m2 |
| Answer» B. 10-15 kg/m2 | |