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Of physisorption and chemisorption which...

Of physisorption and chemisorption which type of adsorption has a higher enthalphy of adsorption ?

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Chemisorption
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Which adsorption has low enthalpy of adsorption ?

Of physiosorption or chemisorption, which has a higher enthalpy of adsorption?

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Adsorption is the tendency of accumulation of molecular species at the surface of solid or liquid. Depending upon the nature of bonds or forces of attraction between adsorbate and adsorbent. It is classofied between physisorption and chemisorption. Which of the following gas molecules have maximum value enthalpy of physisorption?

MODERN PUBLICATION-SURFACE CHEMISTRY-REVISION EXERCISE (VERY SHORT ANSWER QUESTIONS )
  1. Which of the two, adsorption or absorption, is surface phenomenon?

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  2. Given one example each of lyophobic sol and lyophilic so .

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  3. Give one example each of sol and gel.

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  4. Given one example eacg of 'oil water' and 'water oil' emulsion.

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  5. Out of BaCl(2) and KCl, which is more effective in causing coagulation...

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  6. Write one similarity between physisorption and chemisorption.

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  7. The enzymes which convert glucose into ethyl alcohol is

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  8. Define positive and negative catalysis.

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  9. The dispersed phase and dispersion medium in soap lather are respectiv...

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  10. What is differnece between an emulsion and a gel ?

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  11. Which will be adsorbed more readily on the surface of charcoal and why...

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  12. Of physisorption and chemisorption which type of adsorption has a high...

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  13. Give an example of 'shape-selective catalyst'.

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  14. What is the effect of temeperature on chemisorption?

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  15. Why is adsorption always exothermic ?

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  16. What are the dispersed phase and dispersion medium in milk

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  17. Write a method by which lyophobic colloids can be coagulated.

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  18. Write the main reason for the stability of colloidal sols.

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  19. What type of colloid is formed when a solid is dispersed in a liquid? ...

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  20. CO(g) and H(2)(g) react to give different products in the presence of ...

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