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Which pair correctly shows the difference between aqueous and non-aqueous solutions?

Answer and explanation

Correct answer: Salt in water and iodine in ethanol

An aqueous solution has water as its solvent, whereas a non-aqueous solution uses a solvent other than water. Salt dissolved in water is therefore aqueous. Iodine dissolved in ethanol is non-aqueous because ethanol is the solvent. Thus A gives the required contrast. Brass and bronze are alloys, air and nitrogen are gases, and both examples in D are water-based solutions, so they do not provide the same contrast.

Related tags

AqueousNon-AqueousSolventSolutionsExploring Mixtures And Their SeparationScienceClass 9 Mcq

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