Question

Name.the.method.by.whice.lyophillic.colloides.can.be.coagulated

Answer 1

The coagulation of a lyophobic colloidal solution can be achieved by mixing two oppositely charged sols.

eg: If equal proportions of a positively charged sol of hydrated ferric oxide and a negatively charged sol of arsenious sulphide are mixed, then the coagulation of both the sols takes place.