2. Sample Papers
  3. 7th Class
  4. Science

7th Class Science Sample Paper Science Olympiad Model Test Paper-19

  • question_answer
    Oxygenated blood passes from left atrium to left ventricle through:

    A) Septum

    B) Valves

    C) Pulmonary vein

    D) Pulmonary artery

    E) None of these

    Correct Answer: B

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