Question

"Principle of the Biogas production:
Biogas is produced through the "anaerobic fermentation" process in the "presence of water".
Working of the Biogas production:
  1. The biomass is mixed with "cow dung" and "water" in the tank to form a slurry.
  2. The slurry is injected into the digester chamber.
  3. The digester chamber is kept for fermentation for nearly two months without any disturbance.
  4. Only by the end of the two months, the biogas is formed.
We can use the biogas for cooking or some other purposes. We can also remove the formed biogas in the regular interval of period."

Is this the correct answer and and is this much only needed to write for the question:-

‘Explain the principle and working of a biogasplant’.CBSE Class X

Answer 1

Explanation:

Biogas Production Principle. Biogas is generated when bacteria degrade biological material in the absence of oxygen, in a process known as anaerobic digestion. Since biogas is a mixture of methane (also known as marsh gas or natural gas, CH4) and carbon dioxide it is a renewable fuel produced from waste treatment.

Answer 2

Answer:

1,2

Explanation:

Cow dung and water are mixed in equal proportion in the mixing tank m to prepare the slurry this slurry this slurry of dung and water is fed into the digester tank T through the inlet chamber I The digester tank filled with dung slurry upto the cylinderical level the dome being left free for the collection of biogas. It takes about 50 to 60 days for the new gas plant to become operative start functioning. During this period the Cow dung undergoes degradation by anaerobic bacteria presence of water but absence of oxygen with the gradullal evolution of gas.