AIIMS 2019 Biology Biogas MCQ Question

Biogas is primarily composed of methane (CH₄), which typically constitutes 50-70% of its composition, making it the predominant gas. This is a result of anaerobic digestion processes involving organic matter, where microorganisms break down materials and produce methane as a byproduct. In contrast, ethane (C₂H₆), butane (C₄H₁₀), and propane (C₃H₈) are present in much smaller quantities in biogas, as they are not the primary products of anaerobic digestion. Understanding the composition of biogas is essential for its effective utilization as a renewable energy source.