NEET AIPMT SOLVED PAPER SCREENING 2011

  • question_answer
    When 1kg of ice at \[{{0}^{\text{o}}}C\] melts to water at \[{{0}^{\text{o}}}C\], the resulting change in its entropy, taking latent heat of ice to be 80 cal/°C, is

    A)  \[8\times {{10}^{4}}\,cal/K\]

    B)  \[80\,\,cal/K\] 

    C)  \[293\,\,cal/K\]    

    D)        \[273\,\,cal/K\]

    Correct Answer: C

    Solution :

    Change in entropy \[\Delta S=\frac{ml}{T}=\frac{1000\times 80}{273}=293\,\text{cal}\,{{\text{K}}^{\text{-1}}}\]


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