NEET Biology Human Reproduction Question Bank Pollution

  • question_answer
    PAN (Peroxyacetyl nitrate) is an important constituent of photochemical smog. It is a [CBSE PMT 1999; BHU 2005]

    A) Primary pollutant

    B) Secondary pollutant

    C) Natural pollutant

    D) Corrollary pollutant

    Correct Answer: B

    Solution :

    Pollutant formed by chemical interaction of primary pollutants with atmospheric gas and moisture, often catalysed by sunlight are called secondary pollutants. PAN is one such substance.


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