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The presence of electric charge on collo...

The presence of electric charge on colloidal particles is indicated by the property, called :

A

Osmosis

B

Electrolysis

C

Dialysis

D

Electrophoresis

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the electrical charge on a colloidal particle is indicated by :

Why the colloidal particles are charged ?

Sure check for presence of electric charge is

The sol given below with negatively charged colloidal particles is :

Read the given passage and answer the question that follow: Colloidal particles always carry an electric charge which may be either positive or negative. For example, when AgNO_3 solution is added to KI solution, a negatively charged colloidal sol is obtained. The presence of equal and similar charges on colloidal particles provide stability to the colloidal sol and if, somehow, charge is removed. coagulation of sol occurs. Lyophobic sols are readily coagulated as compared to lyophilic sols. Why the presence of equal and similar charges on colloidal particles provide stability?

MODERN PUBLICATION-SURFACE CHEMISTRY-COMPETITION FILE (OBJECTIVE TYPE QUESTIONS) (A. MULTIPLE CHOICE QUESTIONS WITH ONLY ONE CORRECT ANSWER)
  1. Adsorption is accompanied by :

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  2. The enthalpy of physical adsorption is about

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

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  4. Freshly prepared precipitates can be easily dispersed by shaking it wi...

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  5. The presence of electric charge on colloidal particles is indicated by...

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  6. The process of separation of colloids by passing through semi permeabl...

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  7. Size of colloidal particles is

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  8. An example of micelle is:

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  9. Effective electrolyte to cause the flocculation of a negatively charge...

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  10. Colloidal particles exhibit Tyndall effect due to

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  11. Which of the following is most effective in causing the coagulation of...

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

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

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  14. Which type of property is the Brownian movement of colloidal sol?

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

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  16. Out of the following, which reaction gives rise to a colloidal sol:

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  17. Blue colour of water in sea is due to

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  18. Alum helps in purifying water by

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  19. The coagulation power of an electrolyte for As(2) S(3) decreases in th...

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  20. The volume of a colloidal particle VC as compared to the volume of a s...

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