Which option has solute states in the order gas, solid, and liquid?
Answer and explanation
Correct answer: Carbon dioxide in water, salt in water, mercury in metal
The governing idea is to identify the solute first and then determine its physical state. Carbon dioxide is a gaseous solute in water; salt is a solid solute in water; and mercury is a liquid that can dissolve in or combine with certain metals to form an amalgam-type solution. Therefore the order gas, solid, liquid is given by A. In the other options, the examples do not follow the required order or do not represent the stated solute states.
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What is the correct answer to this question?
Carbon dioxide in water, salt in water, mercury in metal
Why is this the correct answer?
The governing idea is to identify the solute first and then determine its physical state. Carbon dioxide is a gaseous solute in water; salt is a solid solute in water; and mercury is a liquid that can dissolve in or combine with certain metals to form an amalgam-type solution. Therefore the order gas, solid, liquid is given by A. In the other options, the examples do not follow the required order or do not represent the stated solute states.
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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