Question:medium

Which of the following is a first order reaction?

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Remember that enzyme-catalyzed reactions and gas decompositions on metal surfaces are usually zero-order under high-concentration conditions, whereas radioactive decay and simple hydrogenations are typically first-order.
Updated On: Apr 29, 2026
  • Decomposition of ammonia on Pt surface at high temperature.
  • Hydrogenation of ethene to ethane.
  • Decomposition of HI on gold surface.
  • Hydrolysis of ethyl acetate in the presence of NaOH.
  • Oxidation of KI by peroxy disulphate.
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The Correct Option is B

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