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What are lyophilic and lyophobic sols? Give one example of each type. 

Answer»

Lyophilic sols :- Those colloidal sols which are attracted towards solvent, are called lyophilic sols. These sols are called reversible sols. They are quite stable and can not be easily coagulated.

Ex. Gelatine

Lyophobic sols :- Those colloidal sols which are not easily attracted towards solvent, are called lyophobic sols. These sols are called irreversible sols. These sols are not stable and can be easily coagulated.

Ex. Metal sulphide



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