Chemical Kinetics And Nuclear Chemistry

The rate constant for a first order reaction is $20 \mathrm{~min}^{-1}$. The time required for the initial concentration of the reactant to reduce to its $\frac{1}{32}$ level is _______ $\times 10^{-2} \mathrm{~min}$. (Nearest integer)


(Given : $\ln 10=2.303$ and \(\log 2=0.3010 \text { )}\)