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Which one of the following does not invo...

Which one of the following does not involved coagulation ?

A

Formation of delta regions

B

Peptization

C

Treatment of drinking water by potash alum

D

Clotting of blood by the use of ferric chloride

Text Solution

Verified by Experts

The correct Answer is:
B
The dispersion of a freshly precipitated material into colloidal solution by the action of an electrolyte solution is termed peptization. It involves the adsorption of suitable ions and the electrically charged particles then splits from the precipitate as colloidal particles.
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ERRORLESS-SURFACE CHEMISTRY-NCERT BASED QUESTIONS (Colloids, Emulsion, Gel and their properties with Application)
  1. In Bredig's arc method some alkali is added because

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  2. Which of the follwing colloids are formed when hydrogen sulphide gas i...

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  3. Which one of the following does not involved coagulation ?

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  4. Peptizing agent is

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  5. The purification of the colloidal particles from crystalloid dimension...

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  6. Bredig's arc method cannot be used to prepare colloidal solution of wh...

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  7. Colloidal solution of gold cannot be prepared by

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  8. All colloidal dispersions have

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  9. Which of the following is most effective in coagulating a ferric hydro...

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  10. Tyndall effect will be observed in :

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  11. Movement of colloidal particles under the influence of electrostatic f...

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  12. Which of the following substance gives a positively charged sol?

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  13. When a colloidal sol is observed under a microscope we can see,

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  14. The blue colour of the water of the sea is due to :

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  15. The charge on Fe(OH)(3) sol is due to

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  16. Colour of colloids depends on which of the following factors

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  17. The colloidal solution of gelatin in known as :

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  18. TYNDALL EFFECT

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  19. The dispersed phase in colloidal iron (III) hydroxide and collodial go...

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  20. Which of the following process is not responsible for the presence of ...

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