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The cause of Brownian-movement is...

The cause of Brownian-movement is

A

temperatures fluctuations within the liquid phase

B

attraction and repulsion between charges on colloidal particles

C

impact of molecules of the dispersion medium on colloidal particles

D

convection currents

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The correct Answer is:
C
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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.

OP TANDON-THE COLLOIDAL STATE-Objective Questions
  1. Which of the following substance gives a positively charged sol?

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  2. Brownian movement was discovered by :

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  3. The cause of Brownian-movement is

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  4. Tyndall phenomenon is exhibited by

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  5. The sky looks blue due to ………… effect.

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  6. Tyndall effect in colloidal solution is due to

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  7. Migration of colloidal particles under the influence of electrie field...

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  8. the stability of lyophilic colloids is due to

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  9. Greater the valency, the higher is the coagulating power of ion.'This ...

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  10. Bleeding is stopped by the application of ferric-chloride this is beca...

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  11. The property of colloidal suspension used to determine the nature of c...

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  12. When excess of electrolyte is added to a colloid it :

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  13. The colloidal solutions of gold prepared by different methods have dif...

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  14. The capacity of an ion to coagulate a colloidal solution depends on

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  15. Lyophilic sols are more stable than lyophobic sols because

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  16. which of the following will have the highest coagulating power for As(...

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  17. A negatively charged suspension of clay in water will need for precipi...

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  18. Which of the following ielectrolytes is least effective in causing flo...

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  19. Fe^(3+) ions coagulate blood. This show should blood contains colloida...

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  20. Gold number is a measure of

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