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What is meant by coagulation of a colloi...

What is meant by coagulation of a colloidal solution ? Describe briefly any three methods by which coagulation of a lyophobic sol can be carried out.

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ICSE-SURFACE CHEMISTRY -EXERCISE (PART-II ( DESCRIPTIVE QUESTIONS )) ( SHORT ANSWER QUESTIONS)
  1. Explain the terms with suitable example. Electrodialysis

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  2. Explain the terms with suitable example. Brownian movement

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  3. Write three distinctive features of chemisorption which are not found ...

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  4. Name the two groups into which phenomenon of catalysis can be divided....

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  5. Describe a conspicuous change observed when a solution of NaCl is ...

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  6. Describe a conspicuous change observed when a beam of light is pas...

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  7. What is meant by coagulation of a colloidal solution ? Describe briefl...

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  8. Explain the following terms giving one example of Miscelles

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  9. Explain the following terms giving one example of Aerosol

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  10. Give reasons for the following: Rough surface of a catalyst is mor...

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  11. Give reasons for the following: Ne gets easily absorbed over charc...

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  12. Write the differences between physisorption and chemisorption with res...

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  13. What are the characteristics of the following colloids Multimolecul...

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  14. What are the characteristics of the following colloids Lyophobic so...

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  15. What are the characteristics of the following colloids Emulsions

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  16. What happens when freshly precipitated Fe(OH)3 is shaken with small am...

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  17. Why is finely divided substance more effective as an adsorbent ?

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  18. In reference to Freundlich adsorption isotherm, write the expression f...

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  19. Write an important characteristic of lyophilic sols.

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  20. Based on type of particles of dispersed phase give one example each of...

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