Explain the following observation:  a. A beam of light passing through a colloidal solution
Channel: Doubtnut
Date: 12/07/2020

Explain the following observation:  a. A beam of light passing through a colloidal solution has a visible path.  Passing an electric currenet through a colloidal solution removes colloidal particles from it.  c. Ferric hydroxide sol coagulates on addition of potassium sulphate.