For the generation of biogas, the materials commonly used are__________?
Correct answer: A. Animal wastes
- A. Animal wastes
- B. Forest residues
- C. Aquatic plants
- D. None of these
Explanation
Animal waste is commonly fed into an oxygen-free digester, where microorganisms break it down to produce methane-rich biogas. Other organic residues can also be used, but animal waste is the standard answer here.
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