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How do you account for the following: ...

How do you account for the following:
Use of potash alum in the purification of water.

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ICSE-SURFACE CHEMISTRY -EXERCISE (PART-II ( DESCRIPTIVE QUESTIONS )) ( LONG ANSWER QUESTIONS)
  1. How do you account for the following: Curdling of milk

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

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

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

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

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

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

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

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

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

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

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

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

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  14. Describe briefly how gold sols can be prepared ?

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  15. Define Gold number.

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  16. Name any two protective colloids.

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  17. Why is the cotton cloth required to be treated with a mordant, before ...

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  18. In what respect electrophoresis differ from electrolysis ?

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  19. What are enzymes inhibitors ?

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  20. Explain the term heterogeneous catalysis. Give examples of heterogeneo...

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