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Question

Which of the following explains that during a chemical reaction, the sum of masses of the reactants and products remains unchanged?

This question was previously asked in
RRB NTPC 2025 Under Graduate CBT 1 Question Paper PDF (20-Jun-2026) (Shift 3)
The correct answer is

Law of Conservation of Mass

The Law of Conservation of Mass states that the total mass of reactants equals the total mass of products in a chemical reaction.

The Law of Periodicity, Definite Proportions and Definite Composition describe other chemical principles, not mass conservation during reactions.

Hence, Law of Conservation of Mass is the correct answer.

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Similar Questions

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Important Questions from Laws and Principles

  1. TV remote controls work on the principle of ________.

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