7th Class Science Winds, Storm and Cyclones Question Bank Natural Phenomena: Winds, Storm and Cyclones

  • question_answer 17) On blowing air into balloon, the size of the balloon increases because

    A) air exerts pressure

    B) warm air rises up

    C) air is stronger than balloon

    D) None of these

    Correct Answer: A

    Solution :

        air exerts pressure

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