Sample Questions — Microbes in production of biogas
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MCQ
Which component of the biogas plant is responsible for gas collection?
✅ Correct Answer: C
The gas formed during anaerobic digestion rises into the tank above the digester.
MCQ
Cattle dung is commonly known as:
✅ Correct Answer: A
'Gobar gas' is biogas generated from cattle dung.
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MCQ
Methanogens are found in the rumen of:
✅ Correct Answer: C
Methanogens help in cellulose digestion in rumens and produce methane.
MCQ
Which of the following statements about methanogens is/are correct?
I. Present in rumen of cattle
II. Capable of digesting cellulose
III. Produce methane in aerobic conditions
IV. Used in gobar gas plants
✅ Correct Answer: C
Methanogens are strict anaerobes that digest cellulose and generate methane.
MCQ
Methanogens are strict anaerobes. Which one of the following would reduce biogas yield the most?
✅ Correct Answer: D
Oxygen inhibits methanogens; they require oxygen-free conditions.
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