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6th Class Science Water Question Bank Self Test-16

  • question_answer
    Which one of the following is a factor of air pollution?

    A) (a) Vehicles

    B) (b) Industries

    C) (c) Plants

    D) (d) Both (A) and (B)

    E) (e) None of these

    Correct Answer: D

    Solution :

    (d)


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