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Why does clear sky appear blue ?...

Why does clear sky appear blue ?

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DINESH PUBLICATION-SURFACE CHEMISTRY -QUESTION FROM BOARD EXAMINATIONS
  1. Can the same substance act both as colloid and crystalloid ?

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  2. If a strong beam of light is passed through a colloidal sol place in a...

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  3. Why does clear sky appear blue ?

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  4. Why are lypolhilic colloids more stable than hybrobic colloids ?

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  5. Give one example each of multimolecular and macro-molecular colloids.

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  6. What happens when colloidal solution of fe(OH)(3) and As(2)S(3) are mi...

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  7. What happens when freshly precipitated ferric hydroxide is treated wit...

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  8. Why is pyophobis sol easily congulated as compared to lyophilic sol ?

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  9. Mention two ways by which lyophobic colloids can be coagulated.

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  10. What will happen when a small amount of NaCl solution is added to hydr...

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  11. Why does physisorption decrease with increase in temperature ?

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  12. A synthetic rubber which is resistant to the action of oils gasoline a...

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  13. What is Tyndall Effect?

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  14. What is coagulation process ?

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  15. What is an emulsion ?

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  16. Name two types of adsorption phenmenon.

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  17. Name the catalyst and promoter in the Haber's process for the manufact...

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  18. What are the physical states of the dispersion medium and dispersed ph...

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  19. Adsorption of a gas on the surface of solid is sgenerally accompanied ...

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  20. How does increase in tempeature affect both physical and chemical adso...

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