Which of the following statements about methanogens is not correct?

1. They can be used to produce biogas.
2. They are found in the rumen of cattle and their excreta.
3. They grow aerobically and breakdown cellulose-rich food.
4. They produce methane gas.

Subtopic:  Microbes in Production of Biogas |
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During anaerobic digestion of organic waste, such as in producing biogas, which one of the following is left undegraded:

1. Lipids

2. Lignin

3. Hemi-cellulose

4. Cellulose

Subtopic:  Microbes in Production of Biogas |
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Which bacteria is utilized in a Gobar gas plant:

1. Methanogens

2. Nitrifying bacteria

3. Ammonifying bacteria

4. Denitrifying bacteria

Subtopic:  Microbes in Production of Biogas |
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Which one produces gas by decomposing the gobar (Dung) in gobar gas:
1.  Fungus
2.  Virus
3.  Methanogenic bacteria
4.  Algae

Subtopic:  Microbes in Production of Biogas |
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