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  1. The oil in the wick of lamp rises due to

    2. A.

     Pressure difference
    B.

     Pheonomenon of capillarity
    C.

     Low viscosity of oil
    D.

     Force of cohesion

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    Answer : Option B

    Explanation :

    The oil in the wick of an oil lamp rises up due to capillary action. This effect is due to surface tension of liquids. The wick here acts as a capillary tube

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