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BHU PMT BHU PMT (Mains) Solved Paper-2008

  • question_answer
    Consider following two reactions \[A\xrightarrow[{}]{{}}Product,-\frac{d[A]}{dt}={{k}_{1}}{{[A]}^{0}}\] \[B\xrightarrow[{}]{{}}Product,-\frac{d[B]}{dt}={{k}_{2}}{{[B]}^{0}}\] \[{{k}_{1}}\]and\[{{k}_{2}}\]are expressed in terms of molarity\[(mol\text{ }{{L}^{-1}})\]and time\[({{s}^{-1}})\]as

    A)  \[{{s}^{-1}},\text{ }M{{s}^{-1}}\text{ }{{L}^{-1}}\]            

    B) \[M{{s}^{-1}},\text{ }M{{s}^{-1}}\]

    C)  \[{{s}^{-1}},\text{ }{{M}^{-1}}\text{ }{{s}^{-1}}\]              

    D) \[M{{s}^{-1}},\text{ }{{s}^{-1}}\]

    Correct Answer: D

    Solution :

                     For 1st reaction, \[-\frac{d[A]}{dt}={{k}_{1}}[{{A}^{0}}]\] \[{{k}_{1}}=\frac{M}{s}=M{{s}^{-1}}\] For Und reaction \[-\frac{d[B]}{dt}={{k}_{2}}[B]\] \[{{k}_{2}}=\frac{M}{Ms}={{s}^{-1}}\]


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