Question

What are lyophilic sold?

Answer 1

They are those in which the dispersed phase exhibits a definite affinity for the dispersion medium(liquid) or the solvent. For eg. Dispersion of starch, gum, & protein in water. The affinity of sol particles for the medium is due to hydrogen bonding with water(dispersion medium).

Answer 2

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Substances like metals, their sulphides and hydroxides which do not form a colloidal solution by direct mixing of the dispersion medium are called lyophobic sols.

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