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Why does leather get hardened after tann...

Why does leather get hardened after tanning ?

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MODERN PUBLICATION-SURFACE CHEMISTRY-EXERCISE
  1. What are adsorption and absorption processes? Give one example to show...

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  2. What is homogeneous and heterogeneous catalysis ? Give one example of ...

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  3. Why does leather get hardened after tanning ?

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  4. Lyophillic colloids are more stable than lyophobic colloids. Explain.

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  5. In Haber’s process, hydrogen is obtained by reacting methane with stea...

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  6. What are emulsions ? What are their different types ? Give one example...

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  7. What is coagulation ?

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  8. Differentiate between homogeneous and hetero geneous catalyst ?

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  9. What are micelles ?How are they helpful?

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  10. What is Tyndall effect ? What is the cause of it ?

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  11. Explain Brownian movement.

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  12. What is homogeneous and heterogeneous catalysis ? Give one example of ...

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  13. Which of the following is an emulsifying agent?

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  14. What is the difference between physisorption and chemisorption ?

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  15. Explain why the solid catalyst is used in a finely divided form as het...

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  16. Differentiate between absorption and adsorption.

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  17. Out of MgCl2 and AlCl3, which one is more effective in causing coagula...

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  18. Out of sulphur sol and proteins, which one forms multimolecular colloi...

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  19. In making of aircrafts and aeroplanes, an alloy is used which is calle...

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  20. There are bells in the schools and temples which you have seen many ti...

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