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Which of the following is not true for a biogas plant?

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in Biology – Class 12 by (271k points)
Which of the following is not true for a biogas plant?

(a) The floating cover is placed over slurry

(b) Biogas plant does not have an outlet

(c) The slurry is removed and may be used as a fertiliser

(d) The concrete tank is 10-15 feet deep

I have been asked this question in exam.

My question is from Microbes in Production of Biogas topic in division Microbes in Human Welfare of Biology – Class 12

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The correct option is (b) Biogas plant does not have an outlet

The best I can explain: The biogas plant has a 10-15 feet deep concrete tank. A floating cover is placed over slurry which keeps on rising as the gas is produced in the tank due to the microbial activity. The biogas plant has an outlet, which is connected to a pipe to supply biogas to nearby houses. Also, the slurry can be removed and may be used as a fertiliser.

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