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which are the properties of colloidal so...

which are the properties of colloidal solution ?

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The diameter of colloidal particles range between 1 - 1000 nm. Pore size of ordinary filter paper is more than 1000 nm. As such colloidal particles can easily pass through an ordinary filter paper. Therefore, special type of filter paper called ultra filter paper, with pore size less than 1nm is used to separate colloidal particles from dispersion medium.
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A colloidal solution is a type of mixture which consists of particles whose size varies between 1 and 1000 nanometres. In colloidal solution the particles are distributed evenly. During this process the particles do not settle down. This is one of the best know thing about colloidal solutions. Properties of colloids and their variation are a well-known area ever since the primitive age. The best example to prove their familiarity with us is that we know from very early times that coagulation of milk results in the formation of curd. Physical properties of colloids 1. The nature of the colloidal solution is heterogeneous i.e. unlike. These solutions dwell with two different phases : • Dispersed medium Dispersed phase. 2. Despite the fact that colloidal dispersions are unlike in description (nature), yet the dispersed fragments are not detectabJe by the human eye. This is due to the microscopic size of the particles in the solution. 3. The colour of the colloidal dispersion is determined by particles in the solution based on their size. The wavelengths of light that is absorbed will be longer ifthe size of the particle is large. 4. As a result of its size, the colloidal fragments can easily be passed through a traditional filter paper. However, these particles can be filtered by using membranes such as animal, cellophane, and ultrafilters. What type of phases of colloidal solutions ?

BETTER CHOICE PUBLICATION-SURFACE CHEMISTRY -Question Bank
  1. Explain two applications of enzymes.

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  2. What are colloids ?

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  3. which are the properties of colloidal solution ?

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  4. What is the difference between true solution and colloidal solution?

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  5. Give three differences between suspension and colloid solution.

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  6. Name the dispersed phase and dispersion mediumin fog.

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  7. Comment on the statement that “colloid is not a substance but a state ...

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  8. What are lyophilic and lyophobic sols ? Give one example of each. Why ...

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  9. What are gels ? Give an example of elastic and non-elastic gel.

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  10. How will you differentiate Lyophilic colloids from Lyophobic colloids?

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  11. Lyophillic colloids are more stable than lyophobic colloids. Explain.

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  12. What is the difference between multimolecular and macromolecular collo...

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  13. Give three differences between multimolecular colloids and macromolecu...

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  14. What are micelles ? Give one example of a micellar system.

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  15. Explain the mechanism of the cleansing action of soaps

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  16. Discuss cleansing action of soap by micelle formation.

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  17. Write short note on peptisation.

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  18. What is peptization ? What is cause of peptization ? Give one example.

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  19. How will you prepare a collidal solution of gold?

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  20. Write short note on electro-dialysis.

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