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A teacher gives three examples: air, salt water, and brass. What are the states of the solvents respectively?

Answer and explanation

Correct answer: Gas, liquid, solid

The concept is that the solvent is usually the component present in the larger amount and its physical state determines the solution’s state. In air, the major component is gaseous, so the solvent is a gas. In salt water, water is the liquid solvent. In brass, copper is commonly the major metal and acts as the solid solvent. Thus the sequence is gas, liquid, solid, making A correct; the other sequences misassign at least one solvent state.

Related tags

Solvent StateAir Salt Water BrassSolutionsClass 9 ScienceSolute And SolventExploring Mixtures And Their SeparationScienceClass 9 Mcq

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