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ChemistryJEEM-2021-0318-S1-C11·March · 18 Mar · Shift 1

Chemical Kinetics · First-order reactions

For a first-order reaction, 75% of the reactant is consumed in 60 minutes. The half-life (in minutes) is:

(1)15
(2)20
(3)30
(4)45

Answer: 30