Advertisements
Advertisements
प्रश्न
Answer the following question.
What is the difference between an emulsion and a gel?
उत्तर
Emulsion: It is a colloidal mixture in which both the dispersed phase and the dispersion medium are liquids. The two or more liquids present in the mixture are generally immiscible in nature. Example: Milk.
Gel: It is a colloid in which the dispersed phase i.e. liquid has combined with the dispersion medium i.e. solid to produce a semisolid material.
Example: jellies.
संबंधित प्रश्न
Give reasons for the following observations: Addition of alum purifies the water
What are emulsions?
What are their different types emulsions? Give one example of each type.
How do emulsifires stabilise emulsion? Name two emulsifiers.
Give four uses of emulsions.
Give one example each of 'oil in water' and 'water in oil' emulsion.
Give three uses of emulsions.
Match the types of colloidal systems given in Column I with the name given in Column II.
| Column I | Column II |
| (i) Solid in liquid | (a) Foam |
| (ii) Liquid in solid | (b) Sol |
| (iii) Liquid in liquid | (c) Gel |
| (iv) Gas in liquid | (d) Emulsion |
What is the role of adsorption in froth floatation process used especially for concentration of sulphide ores?
During preparation of ice-cream gelatin is added in ice-creams. What could be the role of gelatin in the process?
