Study the image of a biogas plant given below and answer the questions that follow:
Which of the labelled parts depicts the charge pit for the slurry?
[1 mark]
A
B
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B
A
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C
D
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D
C
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Solution
The correct option is B A Biogas is a methane rich fuel gas, produced by the anaerobic breakdown or digestion with the help of methanogenic bacteria.
The given image depicts a biogas plant which is used for the production of biogas. These are mostly situated in rural areas. A biogas plant consists of a 10 -15 feet deep concrete tank known as a digester (D).
It has a charge pit (A) for feeding the slurry of cow dung and water or other organic wastes into the digester where microbes act on the slurry to produce the biogas. Hence option b is correct.