Is Matter Around Us Pure? · Class 9 · CBSE Science
Why does a true solution not scatter a beam of light passing through it (i.e., why does it not show the Tyndall effect)?
Practice question from Is Matter Around Us Pure? (Class 9 · CBSE Science), with the correct answer and a step-by-step solution.
medium · MCQ · Q-024A19
Why does a true solution not scatter a beam of light passing through it (i.e., why does it not show the Tyndall effect)?
- A.Because the solute particles are larger than in diameter.
- B.Because the solute particles are extremely small, having a diameter less than .Correct answer
- C.Because the solute particles undergo Brownian motion constantly.
- D.Because a true solution is always coloured, which absorbs the light completely.
Solution
The particles of a true solution are smaller than () in diameter. Because of this extremely small size, they cannot scatter a beam of light passing through them, and hence the path of light is not visible.
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