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In case of jelly, which of the following is the dispersed phase?
Both solid and liquid phases
Gas phase
Solid phase
Liquid phase
Liquid phase
In a colloidal system like jelly, the dispersed phase is liquid and the dispersion medium is solid. Such a colloid where a liquid is dispersed in a solid is known as a gel.
In a colloidal system like jelly, the dispersed phase is liquid and the dispersion medium is solid. Such a colloid where a liquid is dispersed in a solid is known as a gel.
Think of a sponge filled with water; the solid sponge acts as the dispersion medium and the trapped water acts as the dispersed liquid phase.
Remember 'Jelly in a Gel' тАФ Jelly is a gel, and in a gel, liquid is trapped in solid.
Colloid=Dispersed┬аPhase+Dispersion┬аMedium
Colloids are classified based on the physical state (solid, liquid, or gas) of the dispersed phase and the dispersion medium. Jelly is a classic example of a gel, which is formed when liquid molecules (like water and fruit juice) are trapped within a continuous solid matrix of gelling agents (like pectin or gelatin).
Jelly is classified as a gel.
In a gel, the dispersed phase is liquid and the dispersion medium is solid.
Examples of gels include jelly, cheese, and butter.
Helps in understanding various colloidal systems tested in competitive examinations like RRB, SSC, and UPSC.
Food industry (jellies, jams, gelatin desserts)
Pharmaceuticals (gel capsules, ointments)
Sol: Solid in Liquid (e.g., paint, muddy water)
Emulsion: Liquid in Liquid (e.g., milk, butter)
Aerosol: Solid/Liquid in Gas (e.g., smoke, fog)
D is correct тАФ In the case of jelly, the dispersed phase is the liquid phase while the dispersion medium is the solid phase.
Questions regarding the classification of colloids based on physical states frequently appear in railway and general science exams. Memorize standard examples like milk (emulsion), cheese (gel), and smoke (aerosol).
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