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What is the difference between multimole...

What is the difference between multimolecular and macromolecular colloids? Give one example of each.
How a re associated colloids different from these two types of colloids?

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`a.` Multimolecular colloids are formed by the aggregation of small molecules `(` diameter `lt1mm)`, while macromolecular colloids are forced by macromolecular and consist of single molecules.
`b`. Multimolecular colloids are generally lyophobic whereas macromolecular colloids are generally lyophilic.
Difference between associated colloids and multimolecular and macromolecular colloids.
Multimolecular colloids are formed by the aggregation macromolecular colloids are due to the large size of the molecules themselves `(e.g., ` starch `)` so large that their size lies in the colloidal range. However, associated colloids are formed by electrolytes so that they dissociate into ions and these ions associate together to form ionic micelles whose size lies in the colloidal range, `e.g.,` soaps. This happens above a particular concentration `(` called critical micellization concentration `)` and above a particular temperature, called Kraft temperature.
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CENGAGE CHEMISTRY ENGLISH-NCERT BASED EXERCISE-NCERT Exercise
  1. What role does adsorption play in heterogeneous catalysis?

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  2. Why is a absorption always exothermic ?

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  3. How are the colloidal solutions classified on the basis of physical st...

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  4. Discuss the effect of pressure and temperature on the adsorption of ga...

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  5. What are lyophilic and lyophobic sols? Give one example of each type. ...

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  6. What is the difference between multimolecular and macromolecular collo...

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  7. What are enzymes?

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  8. State the observation when Table salt is added to hydrated ferric oxid...

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  9. What are emulsions ? What are their different types ? Give an example ...

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  10. How do emulsifying agents stabilise the emulsion?

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  11. Action of soap is due to emulsification and micellel formation. Commen...

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  12. Give four examples of heterogeneous catalysis.

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  13. What do you mean by activity and selectivity of catalysts?

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  14. Describe some features of catalysis by zeolites.

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  15. What is shape selective catalysis?

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  16. Explain the following terms: (i) Electrophoresis (ii) Coagulation ...

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  17. Give four uses of emulsions.

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  18. What are micelles? Given an example of micelle system.

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  19. Explain the terms with suitable examples: (i) Alcosol (ii) Aerosol (...

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  20. Comment on the statement that colloid is not a substance but a state o...

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