Advertisements
Advertisements
Question
Give four uses of emulsions.
Solution
Four uses of emulsions:
(i) Cleansing action of soaps is based on the formation of emulsions.
(ii) Digestion of fats in intestines takes place by the process of emulsification.
(iii) Antiseptics and disinfectants when added to water form emulsions.
(iv) The process of emulsification is used to make medicines.
APPEARS IN
RELATED QUESTIONS
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.
What are the dispersed phase and dispersion medium in milk?
How do emulsifires stabilise emulsion? Name two emulsifiers.
Action of soap is due to emulsification and micelle formation. Comment.
Give one example each of 'oil in water' and 'water in oil' emulsion.
Answer the following question.
What is the difference between an emulsion and a gel?
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?
