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NEET Chemistry Chemical Kinetics / रासायनिक बलगतिकी Question Bank Self Evaluation Test - Chemical Kinetics

  • question_answer
    The half-life for the virus inactivation if in the beginning 1.5% of the virus is inactivated per minute is (Given: The reaction is of first order)

    A) 76 min             

    B) 66 min

    C) 56 min             

    D) 46 min

    Correct Answer: D

    Solution :

    [d] For the first order reaction for small finite change \[{{k}_{1}}=\frac{1}{[A]}\frac{\Delta [A]}{\Delta t}\Rightarrow \frac{\Delta [A]/[A]}{\Delta t}=1.5\] % \[{{\min }^{-1}}\] \[=0.015\text{ }mi{{n}^{-1}}\] \[{{t}_{1/2}}=\frac{0.693}{0.015{{\min }^{-1}}}=46.2min\approx 46mm\]


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