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Presence of nitrogen and oxygen in air shows what?

Answer and explanation

Correct answer: Air is a mixture

Air contains gases such as nitrogen, oxygen, carbon dioxide, and water vapour that are physically mixed, and their proportions can vary. Therefore, air is a mixture. In a compound, elements are chemically combined in a fixed ratio, which is not true for air. Exam tip: Variable composition is a key sign of a mixture.

Related tags

Air CompositionNature Of MatterMixturesPure SubstancesNitrogen OxygenSome Basic Concepts Of ChemistryChemistryClass 11 Mcq

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