Which option has all pairs correct based on states of solute and solvent?
Answer and explanation
Correct answer: Soda water — gas liquid, brass — solid solid
Soda water has gaseous carbon dioxide as solute and liquid water as solvent, so its pair is gas–liquid. Brass is a solid alloy in which both the solute and solvent components are solids, giving solid–solid. The other options reverse or misstate the states of soda water, air, hydrogen in palladium, or salt water.
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What is the correct answer to this question?
Soda water — gas liquid, brass — solid solid
Why is this the correct answer?
Soda water has gaseous carbon dioxide as solute and liquid water as solvent, so its pair is gas–liquid. Brass is a solid alloy in which both the solute and solvent components are solids, giving solid–solid. The other options reverse or misstate the states of soda water, air, hydrogen in palladium, or salt water.
Which subject and chapter does this question cover?
This is a Class 9 Science question. Chapter: Exploring Mixtures and Their Separation. Topic: Solute and solvent.
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