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each question constain STATEMENT-1(Asser...

each question constain STATEMENT-1(Assertion ) and STATEMENT - 2 (reason). examine the statement carefully and work the correct answer accoridng to the instructions given below :
STATEMENT-1: Colloidal solutions are stable but colloidal particles do not settle down.
STATEMENT-2: Brownian movement counters the force of gravity act on collooidal particles

A

Both (A) and ( R) are true and ( R) is the correct explanation of ( A)

B

Both ( A) and (R ) true but ( R) is not the correct explanation of ( A)

C

(A) is true but ( R) is false

D

(A) is false but ( R) is true

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A
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NARAYNA-SURFACE CHEMISTRY -EXERCISE - 3
  1. Which one of the following electrolytes is most effective for the coag...

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  2. Which of the following is a lyophobic colloidal solutution

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  3. each question constain STATEMENT-1(Assertion ) and STATEMENT - 2 (reas...

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  4. The homogenous catalysis is shown by

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  5. Which of the following statements are true for hydrophilic solution ?

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  6. Which of the following properties are related to physical adsorption ?

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  7. The best condition for hetergeneous catalysis is

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  8. Gold numbers of protective colloids A, B, C and D are 0.50, 0.01, 0.10...

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  9. Which of the following statements is incorrect regarding physissorptio...

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  10. Select the incorrect statement

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  11. Four different colloids have the following gold number, which one has ...

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  12. Adsorption is an exothermic process. The amount of substance adsorbed ...

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  13. Fog is a colloidal solution of

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  14. Which characteristic is not associated with chemical adsorption?

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  15. Positve Catalyst

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  16. The protecting power of lyophilic colloidal sol is expressed in terms ...

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  17. In freundlich adsorption isotherm, the value of 1/n is :

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  18. Which one of the following statements is incorrect about enzyme cataly...

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  19. According to Hardy schultz law, the floculating power of an ion increa...

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

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