Question

The residue from biogas plant serves as _______manure.

• A. inorganic
• B. organic
• C. synthetic
• D. none of these

Answer 1

Answer: (B)

Biogas is produced by anaerobic degradation of biological materials such as food wastes, animal and plant wastes. Biogas is produced when organic matter decomposes without oxygen in a process which is called anaerobic decomposition. Biogas consists mainly of methane, carbon dioxide and small amounts of impurities/residues.

So the residue from biogas plant serves as organic manure.