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DUMET Medical DUMET Medical Solved Paper-2007

  • question_answer
    An ideal solution is obtained by mixing \[C{{H}_{3}}CHB{{r}_{2}}\] and \[C{{H}_{2}}Br-C{{H}_{2}}Br\] in the ratio \[2:1\,{{P}^{o}}_{C{{H}_{3}}CHB{{r}_{2}}}=173,\,{{P}^{o}}_{C{{H}_{2}}BrC{{H}_{2}}Br}=127\]

    A)  158           

    B)  257

    C)  137           

    D)  197

    Correct Answer: A

    Solution :

    \[P={{x}^{1}}{{P}^{o}}_{C{{H}_{3}}CHB{{r}_{2}}}+{{x}^{2}}{{P}^{o}}_{C{{H}_{2}}BrC{{H}_{2}}Br}\] For \[C{{H}_{3}}CHB{{r}_{2}}\] \[{{x}^{1}}=\frac{2}{2+1}=\frac{2}{3}\] For \[C{{H}_{2}}BrC{{H}_{2}}Br\]\[{{x}^{2}}=\frac{1}{2+1}=\frac{1}{3}\] \[P=\frac{2}{3}\times 173+\frac{1}{3}\times 127\] \[=157.66\approx 158\]


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