Statement - I : (A) Half life period of first order reaction is independent of concentration of the reactant
Statement - II : (R) 99.9% reaction of first order reaction completes in 10 half lives

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Both statements I and II are correct

Statement-I is correct and statement-II is incorrect

Statement-I is incorrect and statement-II is correct

Both statements I and II are incorrect

answer is A.

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Detailed Solution

$K_{1} = \frac{0.693}{t_{\frac{1}{2}}}$ . Half -life time for first order reaction is independent of initial concentration of reactant

for first order reaction $t_{99.9 %} = 10 t_{50 %}$

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