Explain what is observed
(i) When a beam of light is passed through a colloidal sol.
(ii) An electrolyte, NaCl is added to hydrated ferric oxide sol.
(iii) Electric current is passed through a colloidal sol?
When a beam of light is passed through a colloidal sol ?
An electrolyte, NaCl is added to hydrated ferric oxide sol ?
Electric current is passed through a colloidal sol ?