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What causes Brownian motion in colloida...

What causes Brownian motion in colloidal despersion ?

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Zig-Zag motion of the colloidal particles is known as Brownian motion. This is because of the unequal bombardment of the particles of despersion medium on the particles of dispersed phase.
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DINESH PUBLICATION-SURFACE CHEMISTRY -SHORT ASNWER TYPE QUESTIONS
  1. Why do we add alum to purify water ?

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  2. What happens when aeledtric field is applied to colloidal solution ?

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  3. What causes Brownian motion in colloidal despersion ?

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

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  5. Why are some medicines more effective in the colloidal form ?

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  6. Why does leather get hardened after tanning ?

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  7. Cottrell precipitator acts on which of the following principles ?

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  8. How will you distiguish between dispersed phase and dispersion medium ...

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  9. Hardy-schulze rule sates that :-

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  10. It is difficult to stop bleeding from a cut in human body at high alti...

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  11. Why is Fe(OH)(3) colloid positively charged when prepared by adding Fe...

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  12. Why do physisorption and chemisorption behave differently with rise in...

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  13. What happens when dialysis is prolonged ?

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  14. Why do we store silver chloride in dark coloured bottles?

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  15. In the adsorption of oxalic acid on activated charcoal, the activated ...

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  16. Rivers from land, add minerals to sea water. Discuss how ?

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  17. Write differences between physisorption and chemisorption.

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  18. Explain why transition metals and their many compounds act as good cat...

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  19. What role does adsorption play in heterogeneous catalysis ?

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  20. How does a catalyst work?

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