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Given one example each of lyophobic sol ...

Given one example each of lyophobic sol and lyophilic so .

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Lyophobic : `As_2S_3` Lyophilic : Gelatin
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Lyophobic sols are:

Give one example each of sol and gel.

Lyophilic sol are

Write one difference in each of the following : Lyophobic sol and Lyophilic sol

Lyophilic sols are

MODERN PUBLICATION-SURFACE CHEMISTRY-REVISION EXERCISE (VERY SHORT ANSWER QUESTIONS )
  1. Name the type of emulsion to which butter belong to.

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  2. Which of the two, adsorption or absorption, is surface phenomenon?

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

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  4. Give one example each of sol and gel.

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

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

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  7. Write one similarity between physisorption and chemisorption.

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  8. The enzymes which convert glucose into ethyl alcohol is

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  9. Define positive and negative catalysis.

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

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

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

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

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

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  15. What is the effect of temeperature on chemisorption?

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  16. Why is adsorption always exothermic ?

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

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

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

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

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