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MHT CET 2022 Chemistry question

ChemistryChemical KineticsMHT CET 2022

Time required for completion of 90% of a first order reaction is 't'. What is the time required for completion of 99.9% of the reation?

Answer: (C)

Solution

For a first order reaction . For 90 percent completion , so . For 99.9 percent completion , so $t' =

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Question ID VK-093851