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  3. 8th Class
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8th Class Science Sample Paper Science Olympiad Model Test Paper-14

  • question_answer
    Identify the gas, which is produced due to incomplete cmbustion of fuel and when inhaled it combines with the haemoglobin of our blood and preventsit from carrying oxygen.

    A) Carbon dioxide

    B) Carbon monoxide

    C) Nitrogen oxide

    D) Nitrogen trioxide

    E) None of these

    Correct Answer: B

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