SSC Ecology And Environment Sample Paper NCERT Sample Paper-2

  • question_answer
    Chlorofluorocarbon pollution sources include

    A)  Jet air crafts     

    B)  refrigerators

    C)  Fire extinguishers

    D)  all of these

    Correct Answer: D

    Solution :

    [d] chlorofluoro carbons are non-toxic, colourless, odourless, inert chemicals which persist in the atmosphere for long duration. It is used in jet air crafts, refrigerators, fire extinguishers air-conditions, and foam blowing spray.

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