CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2005

  • question_answer
    To what temperature must a neon gas sample be heated to double its pressure, if the initial volume of gas at\[75{}^\circ C\]is decreased by 15.0%?

    A) \[319{}^\circ C\]                              

    B) \[592{}^\circ C\]

    C) \[128{}^\circ C\]              

    D)        \[60{}^\circ C\]

    E) \[90{}^\circ C\]

    Correct Answer: D

    Solution :

    If \[{{V}_{1}}=1{{V}_{2}}=1-\frac{15}{100},{{P}_{2}}=2{{P}_{1}},\] \[{{T}_{1}}=348,\,{{T}_{2}}=?\]                 \[=\frac{17}{20}\]                 \[\frac{{{P}_{1}}{{V}_{1}}}{{{T}_{1}}}=\frac{{{P}_{2}}{{V}_{2}}}{{{T}_{2}}}\]                 \[\frac{{{P}_{1}}}{348}=2{{P}_{1}}\times \frac{17}{20\times {{T}_{2}}}\] \[\therefore \]  \[{{T}_{2}}=60{}^\circ C\]


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