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Write short notes on Peptization...

Write short notes on
Peptization

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ICSE-SURFACE CHEMISTRY -EXERCISE (PART-II ( DESCRIPTIVE QUESTIONS )) ( LONG ANSWER QUESTIONS)
  1. What is the origin of charge on colloidal particles?

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  2. Explain briefly five important applications of colloids.

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  3. Write short notes on Peptization

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  4. Write notes on : Ultrafiltration

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  5. Write notes on : Protective colloids

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  6. How do you account for the following: Curdling of milk

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  7. How do you account for the following: Tail of comets

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  8. How do you account for the following: Use of potash alum in the pu...

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  9. How do you account for the following: Cleansing action of soap

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  10. How do you account for the following: Medicines are more effective...

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  11. What is the state of dispersed phase and the dispersion medium (solid,...

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  12. A certain colloidal solution is not affected by the addition of small ...

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  13. In what type of sol will the surface tension and viscosity be similar ...

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  14. Briefly describe the preparation of colloidal As2 S3. How can you demo...

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  15. Sols can be hydrophilic and hydrophobic. What do these terms mean?

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  16. How does electrophoresis provide information about the sign of charge ...

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  17. Gelatin which is a peptide is added in ice-creams. What can be its ro...

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  18. Colloidal sulphur exhibits Brownian movement while a solution of sulph...

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  19. Describe briefly how gold sols can be prepared ?

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  20. Define Gold number.

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