2. Questions Bank
  3. 8th Class
  4. Science
  5. Pollution of Air and Water

8th Class Science Pollution of Air and Water Question Bank Pollution of Air and Water

  • question_answer
    Which one of the following is not considered as a pollutant unless present in excess concentration?

    A) Carbon dioxide  

    B) Carbon monoxide

    C) Sulphur dioxide 

    D) Nitrogen oxide

    E) None of these

    Correct Answer: A

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