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J & K CET Medical J & K - CET Medical Solved Paper-2004

  • question_answer
    One mole of a perfect gas expands isothermally to ten times its original volume. The change in entropy is:

    A)  0.1 R                                    

    B)  2.303 R

    C)  10.0 R                                  

    D)  100.0 R

    Correct Answer: B

    Solution :

                    \[\Delta S=2.303\text{ }nR\text{ }\log \frac{{{V}_{2}}}{{{V}_{1}}}\] \[n=1\] \[\therefore \]  \[\Delta S=2.303\text{ }R\text{ }log\frac{10}{1}\] \[\Delta S=2.303\text{ }R\]         (\[\because \]\[log\text{ }10=1\])


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