Question

Which of the following shows tyndall effect - salt solution or starch solution?

Answer 1

1. Colloidal solution: A colloidal solution is a solution in which the size of the particle is intermediate to the size of the true solution and suspension. Example - milk.
2. Tyndall effect: The phenomena of scattering of light by colloidal particles as a result of which the path of the beam becomes visible is known as the Tyndall effect.
3. The salt solution is a true solution while the starch solution is a colloidal solution. Also, we know that the Tyndall effect is a property exhibited by colloids.

Hence, starch solution will show tyndall effect.