Question
Chemistry Question on Surface Chemistry
Incorrect statement for Tyndall effect is:
A
The refractive indices of the dispersed phase and the dispersion medium differ greatly in magnitude.
B
The diameter of the dispersed particles is much smaller than the wavelength of the light used.
C
During projection of movies in the cinemas hall, Tyndall effect is noticed.
D
It is used to distinguish a true solution from a colloidal solution.
Answer
The diameter of the dispersed particles is much smaller than the wavelength of the light used.
Explanation
Solution
For Tyndall effect, the diameter of the dispersed particles is not much smaller than the wavelength of the light used.
So, the correct option is (B): The diameter of the dispersed particles is much smaller than the wavelength of the light used.