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Peptisation is a method of preparation o...

Peptisation is a method of preparation of sol. Write a general procedure for peptisation.

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The process of converting a precipitate into colloidal state by shaking it with dispersion medium containing small amount of electrolyte is called peptisation. For example, when ferric-chloride solution is added to ferric hydroxide precipitate, a reddish brown `Fe(OH)_3` sol is obtained.
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A N EXCEL PUBLICATION-SURFACE CHEMISTRY-QUESTION BANK
  1. Write any two characteristics of each of the above two types of adsorp...

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  2. Sols are colloidal systems in which dispersion medium is liquid and di...

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  3. Peptisation is a method of preparation of sol. Write a general procedu...

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  4. Adsorption has many applications. Write any two applications of adsorp...

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  5. Physisorption and chemisorption are the two types of adsorption. Write...

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  6. Which of the following is Lyophobic colloid? Starch in water, Gum in w...

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  7. Colloids are widely used in industry and in daily life. Write any four...

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  8. Which of the following is an example of absorption?

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  9. Write any two differences between absorption and adsorption.

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  10. Based on particles of dispersed phase, collodidal systems are classifi...

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  11. Associated colloids are also known as micelles. How are they formed?

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  12. Catalysis can be classified into two groups-homogeneous and heterogene...

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  13. Write one example for heterogeneous catalysis.

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  14. Which of the following is an emulsifying agent for O/W emulsion? Milk...

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  15. Dispersed phase and dispersion medium are two phases of colloidal syst...

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  16. Physisorption and chemisorption are the two types of adsorption. Write...

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  17. Physisorption and chemisorption are two types of adsorption. What is t...

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  18. Adsorption has many applications. Write any two applications of adsorp...

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  19. Which among the following is not and electrical property of colloids?

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  20. Freundlich adsorption isotherm is (x)/m = kp^((1)/n where n gt1. Anser...

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