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  1. The main industrial source of emission of hydrogen sulphide air pollutant is

    2. A.
    petroleum refineries.
    B.
    coal based thermal power plants.
    C.
    pulp and paper plant.
    D.
    metallurgical roasting & smelting plant.

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    Workspace

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    Answer : Option B

    Explanation :

    No answer description available for this question.

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