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The cause of Brownian-movement is...

The cause of Brownian-movement is

A

heat change in liquid state

B

attractive force between colloidal particles and dispersion medium

C

bombardment of the colloidal particles by the molecules of the dispersion medium

D

interaction of charged particles

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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.

MODERN PUBLICATION-SURFACE CHEMISTRY-REVISION EXERCISE (OBJECTIVE QUESTIONS) (MULTIPLE CHOICE QUESTIONS)
  1. Blood is purified by :

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  2. Blue colour of water in sea is due to

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  3. The cause of Brownian-movement is

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  4. The emulsifying agent in milk is

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  5. Clouds represent an example of dispersion of

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  6. which of the following is a lyophobic colloid ?

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  7. At high concentration of soap in water, soap behaves as …… .

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  8. The ability of the protective colloid is measured in terms of……………….

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  9. The function of enzymes in the living system is to

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  10. The ultrafiltration process of purification of colloidal solutions is ...

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  11. In physical adsorption, the forces associated are :

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  12. The colloidal system of a solid dispersed in liquid medium is :

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  13. Which of the following has minimum gold number ?

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  14. Which of the following is not a favourable condition for physical adso...

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  15. Which property of colloids is not dependent on the change on colloidal...

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  16. Tyndall effect is observed when:

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  17. In the coagulation of solution As, S, which has maximum coagulating va...

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

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  19. Match the type of colloidal system (column I) with its example (column...

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  20. Match the type of colloidal system (column I) with its example (column...

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