5th Class Science Question Bank Science Mock Test-1

  • question_answer 78% of nitrogen, 16% of oxygen and 3.5% of carbon dioxide gas in air is present at which of the following situations?                   

    A)  At the forest               

    B)                         Near a park

    C)                         Exhaled air in a room

    D)                         Near a nursery

    Correct Answer: C

    Solution :

    Not Available

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