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What is heterogeneous catalysis? Give an...

What is heterogeneous catalysis? Give an example.

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MODERN PUBLICATION-SURFACE CHEMISTRY-REVISION EXERCISE (SHORT ANSWER QUESTION)
  1. Give one example of oil in water type emulsion.

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  2. Give two differences between lyophilic and lyophobic colloids.

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  3. What is heterogeneous catalysis? Give an example.

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  4. The equation for Freundlich adsorption isotherm is

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  5. What is 'Tyndall effect' ? Name two mixtures which show this effect.

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  6. Define the following terms : (i) Kraft temperature (ii) Peptizati...

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  7. CMC (Critical Micelle Concentration) is

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  8. When negatively charged colloids like As(2)S(3) sol is added to positi...

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  9. (a) In reference to Freundlich adorption isotherm write the expression...

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  10. Lyophilic sols are

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  11. (a) In reference to Freundlich adorption isotherm write the expression...

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  12. Why dows physisoption decrease with increase of temperature ?

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  13. Why are powdered substances more effective adsorbent than their crysta...

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  14. Give the decreasing order of flocculating power of the following ions ...

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  15. Explain the cleansing action of soaps.

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  16. Classify the type of colloidal sol in the following based on the basis...

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  17. What is Hardy- Schulze law?

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  18. Write differences between physisorption and chemisorption.

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  19. Why does bleeding stop by rubbing moist alum?

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  20. Distinguish between the meaning of the terms adsorption and absorption...

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