MHT CET 2026 Chemistry question

For a first order reaction, half life is 5 hour. What time is required to reduce 10 g of reactant to 2.5 g ?

Answer: (D)

Solution

For a first order reaction the half-life is constant, so the amount halves in every 5 h. , i.e. two half-lives, h. Using the formula, $t

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Question ID VK-100860