Biogas is mainly composed of:
AAcetylene
BEthanol
CHydrogen
DMethane
Answer & Solution
Correct answer: D. Methane
1. Biogas is produced by anaerobic decomposition of organic matter.
2. The dominant gas formed is methane (CH4).
3. Smaller amounts of CO2 and hydrogen sulphide are also present.
4. So biogas is mainly methane.
_Source: NCERT Class 10 Science Ch 14 'Sources of Energy' (byjus.com extract)_
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