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(a) What are lyophilic and lyophobic sols ? Give one example for each. (b) What is Tyndall effect ? |
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Answer» SOLUTION :(a) Lyophilic sol : has affinity towards DISPERSION medium Example : Starch sol, albumin sol, gelatin, glue. Lyophobic sol : Has no (or LITTLE) affinity towards dispersion medium. Example : Sulphur sol, Metal sol, Metal oxide sol, slophide sols. (B) Scattering of light by COLLOIDAL particles. |
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