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VMMC VMMC Medical Solved Paper-2006

  • question_answer
    In an energy recycling process, X g of steam at \[100{}^\circ C\] becomes water at \[100{}^\circ C\] which converts Y g of ice at \[0{}^\circ C\] into water at \[100{}^\circ C\]. The ratio of X and Y will be:

    A) \[\frac{1}{3}\]   

    B)                        \[\frac{2}{3}\]                   

    C) 3                             

    D)        2

    Correct Answer: A

    Solution :

    Specific heat of water \[=4200\,J/kg-K\] Specific latent heat of fusion \[3.36\times {{10}^{5}}\,J/kg\] Specific latent heat of vaporization \[=22.68\times {{10}^{5}}\,J/kg=X\times {{10}^{-3}}\times 22.68\times {{10}^{5}}\] \[=Y\times {{10}^{-3}}\times 3.36\times {{10}^{5}}+Y\times {{10}^{-3}}\times 4200\times 100\] \[\therefore \]  \[\frac{X}{Y}=\frac{7.56}{22.68}=\frac{1}{3}\]


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