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Why is finely divided substance more eff...

Why is finely divided substance more effective as an adsorbent ?

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a finely divided substance more effective as an adsorbent (T/F)

Give reason why a finely divided substance is more effective as an adsorbents?

Give reason for the following observations : (i) When Silver nitrate solution is added to Potassium iodide soltuion , a negatively charge colloidal solution is formed. (ii) Finely divided substance is more effective as an adsorbent. (iii) Lyophilic colloid are also called reversible sols.

Why are powdered substance more effective as adsorbents than their crystalline forms ?

Why are powdered substances more effective adsorbent than their crystalline forms ?

Assertion : Solids in finely divided state act as good adsorbents. Reason : Adsorption is a surface phenomenon .

A catalyst in the finely divided form is most effective because :

If a solid is finely divided:

Why do we need pure substances ?

A finely divided state of the catalyst is more efficient because in this state :

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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