Multiple choice

Percentage of methane in biogas is _________.

  1. 50%

  2. 65%

  3. 68%

  4. 70%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Biogas typically contains 50-75% methane, with 60-65% being the most common range for well-operating biogas plants. The balance is mostly CO2 (30-40%) with small amounts of other gases. Option B (65%) falls within this typical range and is the correct answer.

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