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Gold sol is prepared by Breding's arc me...

Gold sol is prepared by Breding's arc method.

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each question constain STATEMENT-1(Assertion ) and STATEMENT - 2 (reason). examine the statement carefully and work the correct answer accoridng to the instructions given below : STATEMENT-1: Gold sol is multimolecular and hydrophotic in nature. STATEMENT-2: Gold sol is prepared by Bredig's arc method.

A gold sol is prepared by :

Colloidal solution of which of the following cannot be prepared by Breding's arc method?

Gold sol can be prepared by

Which of the following metal sols. cannot be prepared by Bredig’s arc method -

Bredigs arc method involves :

PRADEEP-SURFACE CHEMISTRY -SHORT ANSWER QUESTIONS (III. COLLOIDS)
  1. What are lyophobic sols ? Describe the preparation of a colloidal solu...

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  2. What is peptization ? What is cause of peptization ? Illustrate with o...

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  3. Gold sol is prepared by Breding's arc method.

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  4. Define each of the following terms: (i) Micelles (ii) Peptization (i...

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  5. Explain Hardy-Schulze rule and peptization. Give examples.

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  6. Colloidal arsenious sulphide is readily precipitated by a small amount...

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  7. Explain the observations : Lyophilic colloid is more stable than ly...

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  8. Explain the observations : Coagulation takes place when sodium chlor...

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

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

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

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

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  13. What is zeta potential ? Explain briefly.

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

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

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

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  17. What is collodion ?

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  18. Differentiate between peptization and coagulation.

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

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

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