The statements for laws of chemical combinations are given …

Chemistry Some Basic Concepts of Chemistry Laws of Chemical Combination Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

The statements for laws of chemical combinations are given below. Mark the statement which is not correct.

Matter can neither be created nor destroyed : Law of conservation of mass

A compound always contains exactly the same proportion of elements by weight: Law of definite proportions.

When gases combine they do so in a simple ratio be weight: Gay Lussac’s Law

Equal volumes of gases at same temperature and pressure contain same number of molecules: Avogadro’ Law

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The correct answer is:

When gases combine they do so in a simple ratio by volume at same temperature and pressure.

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