MCQ
Which sol can be prepared directly by mixing the dispersed phase with dispersion medium?
- ALyophobic sol.
- ✓Lyophilic sol.
- CBoth.
- DNone.
✓
Answer
Correct option: B.
Lyophilic sol.
Sol is 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$).$ They may have little or no charge at all $\ \&\ $ they do not exhibit Tyndall effect. These sols are reversible in nature i.e., if two constituents of the sol are separated by any means $($such as evaporation$),$ then the sol can be prepared again by simply mixing the dispersion medium with the dispersion phase and shaking the mixture.
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