The slurry residue after obtaining biogas is used as:
A
pesticide
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B
manure
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C
insecticide
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D
none
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Solution
The correct option is B manure Biogas is formed by the decomposition of dead organic matter in the absence of oxygen by bacteria and the fuel gas formed is a clean methane fuel.The residue left after this bacterial decomposition is a very good manure which is utilized in farming.