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  1. CNG used in automobiles to check pollution, mainly consists of

    2. A.

     CH4
    B.

     CO2
    C.

     N2
    D.

     H2

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    Answer : Option A

    Explanation :

    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.

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