In which example is the final solution solid while the solute is also solid?
Answer and explanation
Correct answer: Brass
The governing concept is the state of the solvent and the resulting solution. Brass is a solid alloy: one solid metal acts as the solute and another solid metal provides the solvent medium. Therefore both the solute and the final solution are solid. Soda water and oxygen in water are liquid solutions, while camphor in nitrogen is a gaseous solution, so the alternatives do not satisfy both conditions.
Frequently asked questions
What is the correct answer to this question?
Brass
Why is this the correct answer?
The governing concept is the state of the solvent and the resulting solution. Brass is a solid alloy: one solid metal acts as the solute and another solid metal provides the solvent medium. Therefore both the solute and the final solution are solid. Soda water and oxygen in water are liquid solutions, while camphor in nitrogen is a gaseous solution, so the alternatives do not satisfy both conditions.
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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