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Question 890005
JEE Chemistry · Medium

Surface Chemistry: Tyndall effect MCQ

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Tyndall effectMediumQuestion 890005

Question

The Tyndall effect is observed in colloids because:
  1. A
    Colloidal particles scatter light (visible beam in colloidal solution)
    Correct
  2. B
    Colloids absorb all light
  3. C
    True solutions also show this
  4. D
    Only sols show this

Correct answer

Colloidal particles scatter light (visible beam in colloidal solution)

Explanation

Tyndall effect: when a beam of light passes through a colloid, the path of the beam becomes visible due to scattering by the colloidal particles. True solutions do not show this (particles too small). Used to distinguish sol from true solution.

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