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NEET levelSingle correct optionDifficulty 1 of 3g3169

The rate-determining step of a multistep reaction is the step that

  1. Ahas the lowest activation energy
  2. Bis the fastest step
  3. Chas the highest-energy transition state, i.e. the largest barrier along the path
  4. Dis always the last step

Answer: C

The slowest step controls the overall rate. The slowest step is the one that passes through the highest-energy transition state (largest effective barrier).
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