An increase in the concentration of the reactants of a reaction leads to change in :

1. activation energy

2. heat of reaction

3. threshold energy

4. collision frequency

Doubtly Asked 30 Oct 2026 NEET UG 2020 Practice test neet Save WhatsApp Report

1 answer

Best answer

Answer: 4. collision frequency

Raising reactant concentration puts more molecules in the same volume, so collisions per second (collision frequency) increase and the rate rises.

Activation energy, threshold energy and heat of reaction are properties of the reaction and do not depend on concentration. Answer: option (4).

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

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