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Freshly Prepared precipitates can be eas...

Freshly Prepared precipitates can be easily dispersed by shaking it with dispersion medium. This process is called

A

Peptisation

B

Electrophoresis

C

Dispersion

D

Dialysis.

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Thomas Graham in 1861, during his work on diffusion found that certain substances such as gelatin, albumin, glue,etc. Diffused at very low rate and were called colloids. The colloid particles have the size in the range of 1 to 100nm consisting of dispersed phase and dispersion ,( medium. The dispersed phase or dispersion medium may be solid, liquid 6r even a gas. Depending upon the nature of dispersion medium or dispersed phase, 8 types of systems are possible except for a gas dispersed in another gas because the gases are completely miscible with each other. The substances which have strong interaction with the dispersion medium are called lyophilic colloids while those which do not pass into collofdalstate readily are called lyophobic colloids. Lyophobic sols are much less stable and are irreversible. What is dispersed phase and dispersion medium ?

Read the given passage and answers following questions : Thomas Graham in 1861, during his work on diffusion found that certain substances such as gelatin, albumin, glue,etc. Diffused at very low rate and were called colloids. The colloid particles have the size in the range of 1 to 100nm consisting of dispersed phase and dispersion medium. The dispersed phase or dispersion medium may be solid, liquid or even a gas. Depending upon the nature of dispersion medium or dispersed phase, 8 types of systems are possible except for a gas dispersed in another gas because the gases are completely miscible with each other. The substances which have strong interaction with the dispersion medium are called lyophilic colloids while those which do not pass into colloidal state readily are called lyophobic colloids. Lyophobic sols are much less stable and are irreversible. Answer the following questions : How many types systems are possible depending upon the nature of dispersion medium?

Read the given passage and answers following questions : Thomas Graham in 1861, during his work on diffusion found that certain substances such as gelatin, albumin, glue,etc. Diffused at very low rate and were called colloids. The colloid particles have the size in the range of 1 to 100nm consisting of dispersed phase and dispersion medium. The dispersed phase or dispersion medium may be solid, liquid or even a gas. Depending upon the nature of dispersion medium or dispersed phase, 8 types of systems are possible except for a gas dispersed in another gas because the gases are completely miscible with each other. The substances which have strong interaction with the dispersion medium are called lyophilic colloids while those which do not pass into colloidal state readily are called lyophobic colloids. Lyophobic sols are much less stable and are irreversible. Answer the following questions : Which substances have strong interactions with dispersion medium?

MODERN PUBLICATION-SURFACE CHEMISTRY-EXERCISE
  1. Which of the following statements is not correct regarding physical ad...

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  2. The colloidal system in which the disperse phase and dispersion medium...

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  3. Freshly Prepared precipitates can be easily dispersed by shaking it wi...

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  4. the electrical charge on a colloidal particle is indicated by :

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  5. The number of phases in a colloidal system is

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  6. The process of separation of colloids by passing through semi- permeab...

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  7. The size of colloidal particles is in the range of

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  8. An example of micelle is :

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  9. The average molecular mass of colloidal particles can be accurately de...

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  10. Which of the following is most effective electrolyte in causing the fl...

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  11. What are the components of coin metal alloy?

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  12. Which of the following electrolytes will be most effective in causing ...

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  13. Soaps essentially form a colloidal solution in water and remove the gr...

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  14. On addition of 1 mL solution of 10% NaCl to 10 mL gold sol in the pres...

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  15. Which of the following is an example of associated colloid ?

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  16. Alums purifty muddy water by:

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  17. What are the composition of Durelumine?

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  18. What is the composition of Hydroleum metal alloy?

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  19. When KI is added to silver nitrate solution, the sol formed may be wri...

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  20. Which of the following reaction gives a colloidal sol ?

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