Which option has an incorrect match?
Answer and explanation
Correct answer: Gas in solid—camphor in nitrogen
The governing concept is that the first state names the solute and the second state names the solvent. Air is gas in gas, salt water is solid in liquid, and brass is solid in solid. In camphor in nitrogen, camphor is solid while nitrogen is gas, so the correct category is solid in gas, not gas in solid. Therefore D is the only incorrect match.
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What is the correct answer to this question?
Gas in solid—camphor in nitrogen
Why is this the correct answer?
The governing concept is that the first state names the solute and the second state names the solvent. Air is gas in gas, salt water is solid in liquid, and brass is solid in solid. In camphor in nitrogen, camphor is solid while nitrogen is gas, so the correct category is solid in gas, not gas in solid. Therefore D is the only incorrect match.
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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