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6th Class Science The Living Organisms and their Surrounding Question Bank Self Test-17

  • question_answer
    Air is the mixture of different gases. Which one of the following gases is highly concentrated in the air of our environment?

    A)  Carbon dioxide

    B)  Oxygen

    C)  Nitrogen

    D)  Ozone

    E)  None of these

    Correct Answer: C

    Solution :


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