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Discussion :: Environmental Science

  1. All are primary pollutants except

    2. A.

     Ammonia
    B.

     Peroxyacetyl Nitrate (PAN)
    C.

     Sulfur dioxide
    D.

     Hydrogen sulfide

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    Answer : Option B

    Explanation :

    All are primary pollutants except Peroxyacetyl Nitrate (PAN).

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