In the first order reaction, the concentration of the reactant is reduced to 25% in one hour. The half life period of the reaction is [DCE 2004]

In the first order reaction, the concentration of the reactant is redu

1.	In the first order reaction, the concentration of the reactant is reduced to 25% in one hour. The half life period of the reaction is [DCE 2004]
A.	2 hr
B.	4 hr
C.	1/2 hr
D.	1/4 hr
Answer» D. 1/4 hr

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In the first order reaction, the concentration of the reactant is reduced to 25% in one hour. The half life period of the reaction is [DCE 2004]

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