1.

Half life period of a first order reaction is 138.6 minutes. The velocity constant of the reaction is

A.                 \[0.05\,{{\min }^{-1}}\]
B.                 \[0.00005\,{{\min }^{-1}}\]
C.                 \[0.005\,{{\min }^{-1}}\]              
D.                 \[200\,{{\min }^{-1}}\]
Answer» D.                 \[200\,{{\min }^{-1}}\]


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