Which statement correctly tells the difference between smoke and a true solution?
Answer and explanation
Correct answer: Smoke has solid particles dispersed in gas; it is not a normal true solution
Smoke contains very small solid particles, such as soot, dispersed through air. These particles remain as a dispersed phase rather than dissolving at the molecular level, so smoke is treated as an aerosol or colloidal dispersion, not an ordinary true solution. It is not a pure gas, a liquid–liquid solution, or particle-free. Therefore, option A is correct.
Frequently asked questions
What is the correct answer to this question?
Smoke has solid particles dispersed in gas; it is not a normal true solution
Why is this the correct answer?
Smoke contains very small solid particles, such as soot, dispersed through air. These particles remain as a dispersed phase rather than dissolving at the molecular level, so smoke is treated as an aerosol or colloidal dispersion, not an ordinary true solution. It is not a pure gas, a liquid–liquid solution, or particle-free. Therefore, option A is correct.
Which subject and chapter does this question cover?
This is a Class 9 Science question. Chapter: Exploring Mixtures and Their Separation. Topic: Colloids.
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