biology : class12 Biogas Production by Methanogens : Food Processing, Industrial Production, Sewage Treatment, Energy Production : Microbes in Human Welfare MCQ Questions and Answers
Practice important
Biogas Production by Methanogens
MCQ questions and answers.
Page 1
of
1
|
10
MCQ Questions
1. Which microorganisms are mainly responsible for producing biogas?
A.
Methanogens
B.
Lactobacilli
C.
Yeasts
D.
Rhizobium
Correct Answer:
Methanogens
Explanation:
Methanogens are anaerobic microorganisms that produce methane during the decomposition of organic matter in biogas plants.
2. What is the major component of biogas?
A.
Oxygen
B.
Methane
C.
Nitrogen
D.
Hydrogen
Correct Answer:
Methane
Explanation:
Methane is the major component of biogas and makes it useful as a fuel.
3. Biogas is commonly produced from which material in rural areas?
A.
Cattle dung
B.
Plastic waste
C.
Glass pieces
D.
Metal scraps
Correct Answer:
Cattle dung
Explanation:
Cattle dung is rich in organic matter and is commonly used as a substrate for methanogens in biogas plants.
4. Methanogens produce biogas under which condition?
A.
In the presence of abundant oxygen
B.
In the absence of oxygen
C.
Under direct sunlight only
D.
In completely dry conditions
Correct Answer:
In the absence of oxygen
Explanation:
Methanogens are anaerobic microorganisms, so they produce methane while decomposing organic matter without oxygen.
5. Biogas is also commonly known as which of the following?
A.
Coal gas
B.
Natural gas
C.
Gobar gas
D.
Water gas
Correct Answer:
Gobar gas
Explanation:
Biogas produced mainly from cattle dung is commonly called gobar gas.
6. Which gas in biogas is mainly responsible for its use as a fuel?
A.
Methane
B.
Oxygen
C.
Carbon monoxide
D.
Nitrogen
Correct Answer:
Methane
Explanation:
Methane burns readily and provides the fuel value of biogas.
7. What type of organisms are methanogens?
A.
Anaerobic microorganisms
B.
Photosynthetic plants
C.
Multicellular animals
D.
Aerobic fungi only
Correct Answer:
Anaerobic microorganisms
Explanation:
Methanogens are microorganisms that grow and produce methane in oxygen-free conditions.
8. What happens to organic matter inside a biogas plant?
A.
It is decomposed by methanogens
B.
It is converted directly into oxygen
C.
It is frozen permanently
D.
It is changed into plastic
Correct Answer:
It is decomposed by methanogens
Explanation:
Methanogens decompose organic matter anaerobically and release methane-rich biogas.
9. Which product remains as a useful residue after biogas production?
A.
Digested slurry
B.
Pure oxygen
C.
Glass powder
D.
Metal ash
Correct Answer:
Digested slurry
Explanation:
The digested slurry left after biogas production can be used as nutrient-rich manure.
10. A biogas plant is designed mainly to provide which useful product?
A.
Methane-rich fuel
B.
Liquid oxygen
C.
Synthetic plastic
D.
Edible oil
Correct Answer:
Methane-rich fuel
Explanation:
Biogas plants use anaerobic decomposition by methanogens to produce methane-rich gas that can be used as fuel.
Short Questions and Answers
Practice short questions and answers related to
Biogas Production by Methanogens
.
Short questions are currently unavailable for this page.