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When a beam of light is passed through a...

When a beam of light is passed through a colloidal sol, the path of the beam gets illuminated. (T/F)

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PRADEEP-SURFACE CHEMISTRY -SHORT ANSWER QUESTIONS (III. COLLOIDS)
  1. What is zeta potential ? Explain briefly.

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  2. Define the following and give an example of each (a) Coagulation (b)...

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  3. Colloids have many characteristic properties : Among these, Tyndall ef...

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  4. Heat of adsorption is greater for chemisorption than physiorption. Why...

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  5. What is collodion ?

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  6. Differentiate between peptization and coagulation.

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  7. Explain the following with example : (a) Kraft temperature (b)Coagu...

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  8. What are protective colloids? How are the colloids stabilised? Explain...

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  9. What are emulsions ? Write two applications of emulsification.

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  10. What are emulsion ? How will you prepare a stable emulsion ? What are ...

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  11. Describe the cleaning action of soap.

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  12. What are the two classes of emulsions? Give one example of each class....

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  13. Mention two uses of each of colloids and emulsions.

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  14. Distinguish between true solution and colloidal solution of the same c...

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  15. How are the following sols in water prepared ? (i) Sulphur " "...

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  16. Explain why delta are formed where river and sea water meet.

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  17. Same substance can act both as colloid and crystalloid. (T/F)

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  18. Artificial rain is caused by spraying salt over clouds. (T/F)

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  19. When a beam of light is passed through a colloidal sol, the path of th...

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  20. (a) Give one main difference between lyophilic anc lyophobic colloids....

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