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What are lyophilic and lyophobic sols ? ...

What are lyophilic and lyophobic sols ? Give one example of each type. Which one of these two types of sols is easily coagulated and why?

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PRADEEP-SURFACE CHEMISTRY -SHORT ANSWER QUESTIONS (III. COLLOIDS)
  1. Write dispersed phase and sispersion medium in (i) smoke (ii) milk.

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  2. What are lyophilic and lyophobic sols ? Give one example of each type....

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  3. What are micelles ? Give an example of a micelle system.

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  4. How are the colloids classified on the basis of the nature of interact...

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  5. What is a gel ? Give one example.

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  6. Differentiate between the following pairs : (i) Sols and Emulsions ,...

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

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  8. Classify colloids where dispersion medium is water. State their charac...

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  9. Explain the following terms giving a suitable example for each : (i)...

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  10. Give four difference between lyophilic and lyophobic colloids.

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  11. Explain briefly any three physical methods for the preparation of lyop...

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  12. What are lyophobic sols ? Describe the preparation of a colloidal solu...

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  13. What is peptization ? What is cause of peptization ? Illustrate with o...

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  14. Gold sol is prepared by Breding's arc method.

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  15. Define each of the following terms: (i) Micelles (ii) Peptization (i...

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  16. Explain Hardy-Schulze rule and peptization. Give examples.

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  17. Colloidal arsenious sulphide is readily precipitated by a small amount...

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  18. Explain the observations : Lyophilic colloid is more stable than ly...

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  19. Explain the observations : Coagulation takes place when sodium chlor...

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  20. Explain the observations : Sky appears blue in colour.

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