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Colloidal solution of gold prepared by d...

Colloidal solution of gold prepared by different methods have different colours, because 

A

variable valencies of gold

B

difference in the concentration of gold particles

C

impurities produced by different methods

D

difference in the diameter of colloidal gold particles

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The correct Answer is:
D
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AAKASH SERIES-SURFACE CHEMISTRY-OBJECTIVE EXERCISE - 1 (CATALYSIS)
  1. A catalyst

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  2. The rate of a chemical reaction is increased in presence of a catalyst...

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  3. In heterogeneous catalytic reactions involving solid catalyst and gase...

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  4. An inhibitor is essentially

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  5. The process which is catalysed by one of the products is called

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  6. Which of the following reactions is an example of heterogeneous cataly...

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  7. The catalyst used to increase the dissociation of H(2)O(3) is

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  8. A catalyst increases the rate of a reaction with out changing

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  9. Catalytic action of an enzyme is

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  10. In which of these processes platinum is used as a catalyst ?

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  11. Which of the following catalyst is used for preparing toluene by react...

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  12. A biological catalyst is

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  13. During the cleaning action of soap - part of soap dissolves in the dir...

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  14. Colloidal solution of gold prepared by different methods have differen...

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  15. Which of the following is an example of a heterogeneous catalytic reac...

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  16. Which of the following is a lyophobic solution?

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  17. Which of the following is correct

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  18. Which of the following is an example for auto catalysis

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  19. {:("LIST - 1","LIST - 2"),("A) Positive catalyst","1) "H(2)S" to iron ...

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  20. {:("Name of reaction","Catalyst"),("A) Hydrogenation of oils","1) Fe")...

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