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6th Class Science Separation of Substances Question Bank Separation of Substances

  • question_answer
    Which of the following is NOT a pure substance?

    A)  Argon                  

    B)         Helium

    C)         Water                 

    D)         Air

    Correct Answer: D

    Solution :

    Air is a mixture whereas argon and helium are elements and water is a compound.


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