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.
Frequently asked questions
What is the correct answer to this question?
Salt in water and iodine in ethanol
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 9 Science question. Chapter: Exploring Mixtures and Their Separation. Topic: Solutions.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
