Question
What is the role of catalyst in catalytic reaction ?
MHT CET
Chemistry
Surface Chemistry
2026
MHT CET 2026 (15 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. It decreases the enthalpy of reaction.
- B. It increases the enthalpy of reaction.
- C. It decreases the energy of activation of reaction.
- D. It increases the energy of activation of reaction.
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.
Related: Chemistry — Surface Chemistry · All PYQ Banks