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8th Class Science Coal and Petroleum Question Bank Coal and Petroleum

  • question_answer
    In the oil wells, X forms the topmost layer, followed by Y and finally Z. X, Y and Z are respectively

    A)  Natural gas, oil and water

    B)  Petroleum gas, oil and natural gas

    C)  Natural gas, water and oil

    D)  Petroleum gas, oil and water.

    Correct Answer: A

    Solution :

    In oil wells, the layers containing petroleum oil and gas are above that of water, because oil and gas are lighter than water and do not mix with it,


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