The nature of lyophilic colloids is known to be hostile to lyophobic colloids.
Lyophilic colloids benefit from the presence of lyophilic colloids.
Lyophobic colloids, on the other hand, are solvent-hating colloids.
The dispersed phase of lyophobic colloids has no attraction to the dispersion medium.
Protective colloid is a lyophilic colloid that prevents lyophobic colloids from precipitating under the coagulating action of electrolytes when present in tiny amounts.
Final answer:
Hence, protective colloid is a lyophilic colloid that prevents lyophobic colloids from precipitating under the coagulating action of electrolytes when present in tiny amounts.