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  3. 4th Class
  4. Science

4th Class Science Sample Paper Science Olympiad Model Test Paper-12

  • question_answer
    Air contains which one of the following gases?

    A) Nitrogen            

    B) Oxygen

    C) Helium             

    D) All of these   

    E) None of these          

    Correct Answer: D

    Solution :

    Not Available     


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