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Which option contains only examples related to gaseous solutions?

Answer and explanation

Correct answer: Air and oxygen in nitrogen

The governing concept is that the physical state of a solution is generally identified by the state of its solvent. A gaseous solution has a gas as its solvent. Air is a homogeneous mixture of gases, and oxygen mixed uniformly with nitrogen has nitrogen as the gaseous solvent. In B and D, water is the liquid solvent, whereas brass and bronze in C are solid alloys. Therefore, only A contains gaseous-solution examples.

Related tags

Gaseous-SolutionsAirSolution-TypesScienceClass 9SolutionsExploring Mixtures And Their SeparationClass 9 Mcq

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