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Colloidal solution can be made in water ...

Colloidal solution can be made in water and in air as media. What distinctive names are given to these two types of sols ?

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ICSE-SURFACE CHEMISTRY -EXERCISE (PART-II ( DESCRIPTIVE QUESTIONS )) (VERY SHORT ANSWER QUESTIONS)
  1. KCl is added to Fe(OH)3 sol?

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  2. What is the main cause of charge on a colloidal solution?

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  3. How are gold number and protective power of colloid related?

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  4. What is demulsification ?

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  5. Give four uses of emulsions.

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  6. What are micelles ? Give an example of a micellers system.

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  7. How does soap help in washing clothes?

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  8. What modification can you suggest in the Hardy-Schulze law?

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  9. Why is it essential to wash the precipitate with water before estimati...

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  10. Why lyophilic colloidal sols are more stable than lyophobic colloidal ...

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  11. How can a colloidal solution be distinguished from the true solution o...

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  12. Colloidal solution can be made in water and in air as media. What dist...

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  13. Of NH3 and N2 which gas will be adsorbed more readily on the surface o...

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  14. What is the basic difference between adsorption and absorption.

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  15. What is meant by 'shape-selective catalysis' of reactions ?

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  16. What are lyophobic colloids? Give one example for them.

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  17. How can we make dialysis fast?

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  18. What is meant by Gold number of starch is 10-15?

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  19. The size of colloidal particles ranges between

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  20. Explain why river mouths have to periodically dredged to keep it navig...

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