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Which type of matter does not have fixed composition?

Answer and explanation

Correct answer: Mixture

A mixture contains two or more substances that need not be present in a fixed ratio, so the proportion of its components can vary. Hence, a mixture does not have a fixed composition. In contrast, elements and compounds are pure substances with fixed composition. Exam tip: variable composition generally indicates a mixture.

Related tags

MixtureVariable CompositionPure SubstancesElementsCompoundsMatter ClassificationNature Of MatterSome Basic Concepts Of Chemistry

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