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  3. 10th Class
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10th Class Science Sample Paper Science Olympiad Model Test Paper-12

  • question_answer
    The spherical shaped organ which helps in exchanging of oxygen from blood is called_____.

    A) Bronchi

    B) Trachea

    C) Alveoli

    D) Epiglottis

    E) None of these

    Correct Answer: C

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