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  3. 9th Class
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9th Class Science Sample Paper Science Olympiad Model Test Paper-12

  • question_answer
    Calculate the mass of carbon dioxide which contains the same number of molecules as are contained in 40 g of oxygen?

    A) 30 g     

    B) 35 g

    C) 45 g     

    D) 55 g

    E) None of these

    Correct Answer: D

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