BVP Medical BVP Medical Solved Paper-2011

  • question_answer 31) A capillary tube, made of glass, is dipped in to mercury. Then

    A) mercury rises in the capillary tube

    B) mercury rises and flows out of the capillary tube

    C)  mercury descends in the capillary tube

    D) mercury neither rises nor descends in the capillary tube

    Correct Answer: C

    Solution :

                    When a capillary tube made of glass is dipped into mercury, then mercury descends in the capillary tube because cohesive force between molecules of mercury is more than adhesive force between mercury and glass.

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