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Explain what will you observe when an ...

Explain what will you observe when
an electrolyte (NaCl) is added to hydrated ferric oxide sol

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Explain what is observed when ltbr. a. An electrolyte NaCl is added to hydrated ferric oxide sol. b. Electric current is passed through a colloidal sol. c. When a beam of light is passed through a collidal solution.

Explain what is observed when (i) KCl, an electrolyte, is added to hydrated ferric oxide sol, (ii) an electric current is passed through a colloidal solution, (iii) a beam of lights is passed through a colloidal solution.

Explain what is observed (a) When an electrolyte NaCl is added to ferric hydroxide sol. (b) When an emulsion is subjected to centrifugation. (c) When direct currect is passed through a colloidal sol. (d) When a beam of light is passes through a colloidal solution.

Explain what is observed when (i) an electrolyte is added to ferric hydroxide sol. (ii) an emulsion is subjected to centrifugation. (iii) direct currect is passes through a colloidal sol.

Explain what is observed (i) when a beam of light is passed through a colloidal sol. (ii) an electrolyte, NaCI is added to hydrated ferric oxide sol. (iii) electric current is passed through a colloidal sol.

PRADEEP-SURFACE CHEMISTRY -SHORT ANSWER QUESTIONS (III. COLLOIDS)
  1. Explain the observations : Coagulation takes place when sodium chlor...

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  2. Explain the observations : Sky appears blue in colour.

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  3. Explain what will you observe when an electrolyte (NaCl) is added to...

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  4. Explain what will you observe when an electric current is passed thr...

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  5. Explain what will you observe when a beam of light is passed through...

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  6. What is zeta potential ? Explain briefly.

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

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

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

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  10. What is collodion ?

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  11. Differentiate between peptization and coagulation.

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

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

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

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

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  16. Describe the cleaning action of soap.

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

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

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

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

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