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Chemistry Easy CSS Uploaded: 04 Sep 2026

Which factor does not affect the rate of a chemical reaction?

  • A Catalyst presence
  • B Temperature
  • C Concentration
  • D Color of reactants
Correct Answer: Option D — Color of reactants
Explanation:
The color of reactants has no effect on reaction rate, whereas temperature, concentration, surface area, and the presence of a catalyst are all factors that directly influence how fast a reaction proceeds.
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