What are lyophilic and lyophobic colloidal? Which of these sols can be easily coagulated on the addition of small amount of electrolytes?

What are lyophilic and lyophobic colloids ? Which of these sols can be easily coagulated on the addition of small amount of electrolytes ?

Out of Lyophilic and Lyophobic sols, which can be easily coagulated on the addition of a small amount of electrolyte ?

Out of Lyophilic and Lyophobic sols, which can be easily coagulated on the addition of a small amount of electroyte ?

Out of lyophilic and lyophobic sols, which one can be easily converted into a gel and why?

Why does a colloidal solution coagulate on addition of an electrolyte?