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3rd Class Science Weather, Air and Water Question Bank Air, Water and Weather

  • question_answer
    When we blow air into a balloon it expands. What is the reason?

    A)  Air is invisible.

    B)  Air does not occupy space.

    C)  Air has weight.

    D)  Air exerts pressure.

    Correct Answer: D

    Solution :

    Air exerts pressure on the walls of the balloon and it expands.


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