Which option does not give the correct pair?
Answer and explanation
Correct answer: Air: solid in liquid solution
A solution is classified according to its components and their physical states. Air is a homogeneous mixture of gases, so it is a gas-in-gas solution; it cannot be described as a solid-in-liquid solution. Thus D is the incorrect pair. Oxygen dissolved in water is gas in liquid, iodine in alcohol is non-aqueous, and brass is a solid solution, so the other three pairs are acceptable.
Frequently asked questions
What is the correct answer to this question?
Air: solid in liquid solution
Why is this the correct answer?
A solution is classified according to its components and their physical states. Air is a homogeneous mixture of gases, so it is a gas-in-gas solution; it cannot be described as a solid-in-liquid solution. Thus D is the incorrect pair. Oxygen dissolved in water is gas in liquid, iodine in alcohol is non-aqueous, and brass is a solid solution, so the other three pairs are acceptable.
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.
