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For a first order reaction, rate constant is 6.93×10-2 min-1t99.9% of the reaction is ------- minutes

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a
10000
b
10
c
1000
d
100

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detailed solution

Correct option is D

For a first order reaction,  t12=0.693K ; t12=0.6936.93×10-2 min-1 =10 minutes ; t99.9%=10t12=100 minutes ;

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