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In which option do all examples have a solid solvent?

Answer and explanation

Correct answer: Brass, hydrogen in palladium, amalgam

The governing concept is that the solvent is the component present as the continuous medium, and its physical state determines the solution category. In brass, the solvent is a solid metal; in hydrogen dissolved in palladium, palladium is solid; and in an amalgam, the metallic solvent is solid. The other options include liquid water or gaseous air and nitrogen as solvents, so only A is correct.

Related tags

Solid SolventSolid SolutionsSolute And SolventClass 9 ScienceExploring Mixtures And Their SeparationScienceClass 9 Mcq

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