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Transition metals are efficient catalysi...

Transition metals are efficient catalysis Substantiate

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Why transition metals act as good catalysts ?

Complex compounds of transition metals are familier, but not inner transition elements. Why?

How do transition metals exhibit catalytic activity?

(A): FeO is basic in character. (R): Oxides of transition metals are basic when metal is in lower oxidation state.

Give two reactions in which transition metals or their compounds acts as catalysts.

Oxidation and reaction are complimetary reactions. Substantiate.

Give examples and suggest reasons for the following features of the transition metals. The highest oxidation state is exhibited in oxoanions of a metal.

Ferrites are ferrimagnetic substances. Substantiate.

What is shape selective catalysis ?

A transition metal exists in its highest oxidation state. It is expected to behave as

AAKASH SERIES-SURFACE CHEMISTRY-EXERCISE - 5.2
  1. What are for cationic and anionic surfactants ? Give examples.

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  2. Which property can be used to distinguish colloidal solutions and true...

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  3. Transition metals are efficient catalysis Substantiate

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  4. Colloids sulphur exhibits Brownian movement , while a solution in CS2 ...

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  5. What is peptisation ?

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  6. What is Helmholtz electrical double layer ?

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  7. The change of colloidal particles is responsible for the stability of ...

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  8. A negative change solution is obtained when Ferricchloride is added t...

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  9. Why the colour of gold sol change with the size of gold particles?

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  10. Write the characteristics and importance of bio-catalysis.

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  11. Rate of fruit fermentation increase with time why?

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  12. The decolourisation of permanganate with oxalate is initially slow, bu...

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  13. How the colloids are classified on the basis of type of particles in d...

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  14. Explain the purification of colloids by dialysis and ultrafiltration.

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  15. What is ultrafiltration ?

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  16. Arrange the following substances in order of increasing ability to coa...

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  17. A catalyst lowered the energy of activation by 25 kJ mol^(-1) .How man...

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  18. Presence of catalysis does not change equilibrium constant. Why?

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  19. Why the reaction between nitric acid and copper is slow in the beginni...

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  20. During the micelle formation how the enthalpy entropy and Gibbes energ...

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