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Explain the following terms: Tyndall e...

Explain the following terms:
Tyndall effect

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ICSE-SURFACE CHEMISTRY -EXERCISE (PART-II ( DESCRIPTIVE QUESTIONS )) ( SHORT ANSWER QUESTIONS)
  1. What happens when freshly precipitated Fe(OH)3 is shaken with small am...

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  2. Describe briefly the purification of a colloid by dialysis.

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  3. Explain the following terms: Tyndall effect

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  4. Explain the following terms: Dialysis

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  5. What is meant by an emulsion and emulsifying agents?

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  6. Give four uses of emulsions.

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  7. What is demulsification ?

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  8. What is the main cause of charge on a colloidal solution?

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  9. Differentiate between: Dialysis and ultrafiltration

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  10. Differentiate between: Electrophoresis and electro-osmosis.

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

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  12. What is meant by critical micelle concentration and Kraft temperature ...

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  13. Differentiate between lyophilic and lyophobic colloids.

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  14. Differentiate between sol and emulsion.

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  15. Milk is an emulsion. Identify the dispersed phase and emulsifier in mi...

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  16. Distinguish between the meaning of the terms adsorption and absorption...

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  17. What are lyophilic and lyophobic colloids ? Give four differences betw...

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  18. Why potash alum is added to purify water?

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  19. The adsorption of solutes from solution by solid adsorbents can be exp...

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  20. Give one difference between gel and sol.

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