Which statement correctly distinguishes gas in liquid solution from liquid in gas dispersion?
Answer and explanation
Correct answer: In soda water gas dissolves in liquid, while in fog liquid droplets are dispersed in gas
The governing distinction is between dissolution and dispersion. In soda water, carbon dioxide molecules are distributed at the molecular level throughout liquid water, so it is a true gas-in-liquid solution. Fog contains tiny liquid-water droplets dispersed through air; it is an aerosol, not a true solution. Therefore A is correct. B wrongly treats fog as a true solution, C misuses the solvent idea, and D gives the wrong state.
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What is the correct answer to this question?
In soda water gas dissolves in liquid, while in fog liquid droplets are dispersed in gas
Why is this the correct answer?
The governing distinction is between dissolution and dispersion. In soda water, carbon dioxide molecules are distributed at the molecular level throughout liquid water, so it is a true gas-in-liquid solution. Fog contains tiny liquid-water droplets dispersed through air; it is an aerosol, not a true solution. Therefore A is correct. B wrongly treats fog as a true solution, C misuses the solvent idea, and D gives the wrong state.
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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