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Which option has an incorrect match?

Answer and explanation

Correct answer: Gas in solid—camphor in nitrogen

The governing concept is that the first state names the solute and the second state names the solvent. Air is gas in gas, salt water is solid in liquid, and brass is solid in solid. In camphor in nitrogen, camphor is solid while nitrogen is gas, so the correct category is solid in gas, not gas in solid. Therefore D is the only incorrect match.

Related tags

Incorrect MatchCamphor NitrogenSolute SolventClass 9 ScienceSolutionsExploring Mixtures And Their SeparationScienceClass 9 Mcq

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