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The cause of Brownian-movement is...

The cause of Brownian-movement is

A

Heat changes in liquid state

B

Convectional currents

C

The impact of molecules of the dispersion medium on the colloidal particles

D

Attractive forces between the colloidal particles and molecules of dispersion medium

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The correct Answer is:
C
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Brownian movement is found in

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Assertion: The Brownian movement is due to the bombardment on colloidal particle by the molecules of dispersion midium which are in the constant motion like molecules in a gas. Reason: Brownian movement provides a visible proof of the random kinetic motion of molecules in a liquid.

MARVEL PUBLICATION-SURFACE CHEMISTRY-MULTIPLE CHOICE QUESTIONS - STANDARD LEVEL (3. Colloids )
  1. surface tension of lyophilic sols is

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  2. Which one of the following is not used for preparing lyophilic sols ?

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  3. The cause of Brownian-movement is

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  4. Brownian movement is found in

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  5. The random motion of colloidal particles in the dispersion medium is k...

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  6. In which of the following Tyndall effect is not observed

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  7. Tyndall effect in shown by :

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  8. In brownian motion , the paths of the particles are :

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  9. The migration of colloidal solute particles in a colloidal solution, w...

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  10. When a beam of light is passed through colloidal solution,

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  11. The simplest way to check whether a system is colloidal is by

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  12. A colloidal solution is subjected to an electrical field. The particle...

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  13. For coagulating As(2)S(3) colloidal sol, which of the following will h...

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  14. Which one of the following will have the highest coagulating power for...

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  15. Which of the following ions can cause coagulation of protons ?

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  16. Arseneous sulphide is a negative sol. The reagent with least coagulati...

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  17. the stability of lyophilic colloids is due to

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  18. Why the colloidal particles are charged ?

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  19. Which of the following is macromolecular colloidal ?

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  20. The optical property of colloidal solution is based on the principle

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