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 of the following has the highest affinity for hemoglobin present in blood?

    A) Nitrogen oxide   

    B) Carbon monoxide

    C) Carbon dioxide

    D)        Oxygen

    E) None of these

    Correct Answer: B

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