If a small amount of oxygen is uniformly mixed with nitrogen, what type of solution is it?
Answer and explanation
Correct answer: Gas in gas
The governing concept is classification by the states of solute and solvent. Oxygen is present in the smaller amount, so it is the gaseous solute. Nitrogen is also a gas and is the main medium, so it acts as the gaseous solvent. A uniform mixture of a gaseous solute in a gaseous solvent is therefore a gas-in-gas solution, making B correct. A requires a liquid solvent, C a solid solvent, and D a liquid solute, none of which is present.
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What is the correct answer to this question?
Gas in gas
Why is this the correct answer?
The governing concept is classification by the states of solute and solvent. Oxygen is present in the smaller amount, so it is the gaseous solute. Nitrogen is also a gas and is the main medium, so it acts as the gaseous solvent. A uniform mixture of a gaseous solute in a gaseous solvent is therefore a gas-in-gas solution, making B correct. A requires a liquid solvent, C a solid solvent, and D a liquid solute, none of which is present.
Which subject and chapter does this question cover?
This is a Class 9 Science question. Chapter: Exploring Mixtures and Their Separation. Topic: Solutions.
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