Chemical Kinetics · JEE Main previous year questions

2005 1 question

1. Q1842005 · 28 Apr 2005 · Shift 1

   ${\mathrm{t}}_{1/4}$ can be taken as the time taken for the concentration of a reactant to drop to $\frac{3}{4}$ of its initial value. If the rate constant for a first order reaction is $\mathrm{K}$, the ${\mathrm{t}}_{1/4}$ can be written as

   1. A.$0.10/\mathrm{K}$
   2. B.$0.29/\mathrm{K}$
   3. C.$0.69/\mathrm{K}$
   4. D.$0.75/\mathrm{K}$
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   Answer: B