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Question
Explain what happens when a beam of light is passed through a colloidal solution.
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Solution
Colloidal solution is a heterogeneous mixture in which particle size is intermediate of true solution and suspension, i.e., between 1 nm to 100 nm.
When a beam of light is passed through a colloidal solution, the particles of the solution get illuminated and become visible. This is because colloidal particles scatter the light falling on them.
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