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Explain the following terms with suitabl...

Explain the following terms with suitable examples `:`
`a. alc osol`,`b. Aeo rsol`,`c. Hydrosol`

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`a.` Alcohol `:` It is a colloidal dispersion having alcohol as the dispersion medium, `e.g.,` collodion `(` a colloidal sol of cellulose nitrate in ethyl alcohol `)`. ltbr. `b.` Aerosol `:` It is a colloidal dispersion of a liquid in a gas, `e.g., `fog.
`c.` Hydrosol `:` It is a colloidal sol of a solid in water as the dispersion medium `e.g.,` starch sol or gold sol.
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CENGAGE CHEMISTRY-NCERT BASED EXERCISE-NCERT Exercise
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  2. Adsorption is aways exothermic.

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  3. How are the colloidal solutions classified on the the basis of physica...

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  4. Disuss the effect of pressure and temperature on the adsorption of gas...

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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 colli...

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  7. What are enzymes ? Write in brief the mechanism of enzyme catalysis ?

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  8. Explain what is observed when ltbr. a. An electrolyte NaCl is added to...

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

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  10. How do emulsifiers stabilise emulsion ? Name two emulsifiers.

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  11. Action of soap is due to emulsification and micelle formation. Comment...

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  12. Give four examples of heterogeneous catalytic reactions.

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

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  14. Descirbe 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 : {:(a. El etropho resis , b. Coagulati...

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  17. Give four uses of emulsion.

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  18. What are micelles ? Give an example of a micelle system.

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  19. Explain the following terms with suitable examples : a. alc osol,b....

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

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