CNG used in automobiles to check pollution, mainly consists

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CNG used in automobiles to check pollution, mainly consists of

1. CH₄
2. CO₂
3. N₂
4. H₂

Correct Option: A

Nature gas is 95 percent Methane (CH₄) Plus four other hydrocarbons:
Ethane (C₂ H₆) - 2.5 %, Propane (C₃ H₈) - 0.2 %, Butane (C₄ H₁₀) - 0.06%, Pentanes Plus (C₅ H₁₂ + C₁₀ H₂₂) -0.02%. It also contains small amounts of: Nitrogen (N₂) - 1.6%, Carbon Dixoide (CO₂) - 0.7%, Hydrogen Sulphide (H₂S) - trace, Water (H₂O) - trace