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JEE Main Chemistry question

ChemistryChemical KineticsJEE Main

For a first order reaction, the concentration changes from 0.8 to 0.4 in 15 min. The time taken for the concentration to change from 0.1 M to 0.025 M is

Answer: (A)

Solution

The change from 0.8 to 0.4 is a halving, so . Going from 0.1 M to 0.025 M is a reduction by

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Question ID VK-144276