Topic: Effect of temperature, Arrhenius equation, activation energy· Chemical Kinetics

The addition of a catalyst during a chemical reaction alters which of the following quantities ?

1. Entropy

2. Internal energy

3. Enthalpy

4. Activation energy

Doubtly Asked 30 Oct 2026 NEET UG 2016 Phase 1 Practice test neet Save WhatsApp Report

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Answer: 4. Activation energy

Key idea: a catalyst provides a different path with a lower activation energy. It does not change the state functions of the reactants and products, so entropy, internal energy and enthalpy of the reaction stay the same. Only the activation energy changes.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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The addition of a catalyst during a chemical reaction alters which of the following quantities ?

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