Allied & ICAR Exam Bank • ALLIED_2970
MCQ • 1 Mark
Section 3: Farm Power
Sources of Power
Subtopic: Sources of power on the farm – human, animal, mechanical, electrical, wind, solar and biomass
Question Statement:
In a fixed-dome Janata or Deenbandhu agricultural biogas plant, the active biological digestion of cattle dung occurs under:
Options:
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(A) Anaerobic conditions with methanogenic bacteria converting organic matter into methane and carbon dioxide
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(B) High-pressure aerobic aeration
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(C) Direct solar pyrolysis
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(D) Acid hydrolysis at boiling temperature
Step-by-Step Solution & Explanation
Anaerobic digestion proceeds in three stages (hydrolysis, acidogenesis, methanogenesis) generating $55-65\%$ methane.
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