NEET Chemistry: Colloidal State questions with solutions

Q1. Which sol can be prepared directly by mixing the dispersed phase with dispersion medium?

1. Lyophobic sol
2. Lyophilic sol
3. Both
4. None

Answer: Lyophilic sol

Lyophilic sols are easy to prepare because the dispersed phase has a natural attraction for the dispersion medium, so simple mixing is enough. Lyophobic sols usually require special methods like dispersion or condensation.