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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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ICSE-SURFACE CHEMISTRY -EXERCISE (PART-II ( DESCRIPTIVE QUESTIONS )) ( SHORT ANSWER QUESTIONS)
  1. Explain how the phenomenon of adsorption finds application in each of ...

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  2. What is meant by colloid and colloidal state? How does the theory of s...

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

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  4. Distinguish between multimolecular and macromolecular colloids.

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  5. What are multimolecular and macromolecular colloids? Give one example ...

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

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  7. Distinguish between mutlimolecular, macromolecular and associated coll...

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  8. What are micelles ? Give an example of a micellers system.

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  9. Write three differences between true solutions and colloidal solutions...

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  10. How are the following sols produced ? (a) Sulfur sol (b) Collodion.

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  11. Explain briefly dialysis.

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  12. Explain the following terms: Electrodialysis

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  13. Explain the following terms: Phases of a colloidal solution.

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  14. Define Gold number.

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  15. Special type of filter papers are used for the filtration of colloidal...

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  16. Define coagulation.

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  17. Bleeding from a fresh cut can be stopped by applying alum. Give reason...

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  18. Briefly describe the Bredig's arc method for the preparation of lyopho...

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  19. What is Tyndall effect ? Mention one of its applications.

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  20. Explain what is meant by Tyndall effect ?

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