7th Class Science Winds, Storm and Cyclones Question Bank Winds, Storms and Cyclones

  • question_answer
    On what principle does a syringe work?

    A)  Variance in pressure

    B)  Variance in temperature

    C)  Variance in humidity

    D)  Variance in mass

    Correct Answer: A

    Solution :

    In a syringe, low pressure is created inside by pulling the sucker. This sucks the liquid into the syringe. When the sucker is pushed, liquid gushes out through the needle, due to increase in pressure.


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