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Discussion :: Heat and Mass Transfer

  1. Thermal conductivity of water _________ with rise in temperature.

    2. A.

     Remain same
    B.

     Decreases
    C.

     Increases
    D.

     May increase or decrease depending upon temperature

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    Answer : Option D

    Explanation :

    Same happens when we heat water, as the temperature increases the water expands making atoms move more freely enabling to transfer heat at increased speed (the resistance between atom decreaed) so the thermal conductivity increase with increase temprature.

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