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Discussion :: Fuels and Combustion

  1. Insitu theory and drift theory are related to the

    2. A.
    origin of petroleum oil.
    B.
    origin of coal.
    C.
    coalification.
    D.
    variation of coal quality with depth.

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    Workspace

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    Answer : Option B

    Explanation :

    No answer description available for this question.

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