5th Class Science Our Environment Question Bank Self Test-9

  • question_answer
    Which of the following is not a pollutant?

    A) (a) Lead oxide    

    B) (b) Sulphur dioxide

    C) (c) Nitrogen dioxide   

    D) (d) Water vapor

    E) (e) None of these

    Correct Answer: A

    Solution :

    (a)


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