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Which of the following colloids cannot b...

Which of the following colloids cannot be coagulated easily?

A

Lyophobic colloids

B

Irreversible colloids

C

Reversible colloids

D

lyophilic colloids

Text Solution

Verified by Experts

The correct Answer is:
C, D
Lyophilic colloids (liquid loving colloids ) which are also known as reversible colloid can't be coagulated easily. The stability of these colloids are due to
(i)charge on colloidal particles and (ii) solvation of colloidal particles.
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NCERT EXEMPLAR-SURFACE CHEMISTRY-Surface Chemistry
  1. An emulsion cannot be broken by ……….and …….. .

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  2. Which of the following substances will precipitate the negatively char...

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  3. Which of the following colloids cannot be coagulated easily?

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  4. What happens when a Lyophilic sol is added to a Lyophobic sol?

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  5. Which phenomenon occurs when an electric field is applied to a colloid...

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  6. In a reaction, catalyst changes ……… .

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  7. Which of the following phenomenon occurs when a chalk stick is dipped ...

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  8. Why is it important to have clean surface in surface studies ?

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  9. Why is chemisorption referred to as activated adsorption?

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  10. What type of solutions are formed on dissolving different concentratio...

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  11. What happens when gelatin is mixed with gold sol ?

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  12. How does it become possible to cause artificial rain by spraying silve...

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  13. Gelatin which is a peptide is added in ice-creams. What can be its ro...

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  14. What is collodion?

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  15. Why do we add alum to purify water ?

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  16. Which phenomenon occurs when an electric field is applied to a colloid...

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  17. What causes Brownian motion in colloidal dispersion?

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  18. A colloid is formed by adding FeCl(3) in excess of hot water. What wil...

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  19. How do emulsifiers stabilise emulsion ? Name two emulsifiers.

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  20. Why are some medicines more effective in the colloidal form?

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