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Sources of Energy — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceSources of Energy1 Mark
MCQ
The main constituent of biogas is :
  • ✓
    Methane.
  • B
    Carbon dioxide.
  • C
    Hydrogen.
  • D
    Hydrogen sulphide.
✓

Answer

Correct option: A.
Methane.
Bio $-$ gas is an excellent fuel as it contains up to $75\%$ methane. It burns without smoke, leaves no residue like ash in wood, charcoal and coal burning. Its heating capacity is high. Bio $-$ gas is also used for lighting.

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