MHT CET202615 April 2026Evening ShiftChemistrySurface ChemistryActual
What is the role of catalyst in catalytic reaction ?
Options
- AIt decreases the enthalpy of reaction.
- BIt increases the enthalpy of reaction.
- CIt decreases the energy of activation of reaction.
- DIt increases the energy of activation of reaction.
Correct answer
C. It decreases the energy of activation of reaction.
Step-by-step solution
A catalyst increases the rate of a chemical reaction by providing an alternative reaction pathway that has a lower activation energy. It does not alter the enthalpy, entropy, or Gibbs free energy of the reaction. Thus, the primary role of a catalyst is to decrease the energy of activation of the reaction. Answer: It decreases the energy of activation of reaction.