43. CNG used in automobiles to check pollution, mainly consists of A.CH4 B.CO2 C.N2 D.H2
Answer: Option A Solution: Nature gas is 95 percent Methane (CH4) plus four other hydrocarbons: Ethane (C2H6) - 2.5 %, Propane (C3H8) - 0.2 %, Butane (C4H10) - 0.06%, Pentanes Plus (C5H12 + C10H22) -0.02%. It also contains small amounts of: Nitrogen (N2) - 1.6%, Carbon Dixoide (CO2) - 0.7%, Hydrogen Sulphide (H2S) - trace, Water (H2O) - trace.
