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NEET Sample Paper NEET Sample Test Paper-52

  • question_answer
    In a first order reaction the reactant substance has half-life period of ten minutes. What fraction of the substance will be left after an hour the reaction has occurred?

    A) 1/6 of initial concentration

    B) 1/64 of initial concentration

    C) 1/12 of initial concentration

    D) 1/32 of initial of concentration

    Correct Answer: B

    Solution :

    After 1 hrs \[n=\frac{60}{10}=6\] \[\therefore \,\,\,\frac{C}{{{C}_{0}}}\,\,=\,\,{{\left( \frac{1}{2} \right)}^{6}}\,=\,\,64\]


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