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Why does vanadium pentoxide act as a cat...

Why does vanadium pentoxide act as a catalyst?

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Vanadium exists in multiple oxidation states.
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PRADEEP-D- AND F-BLOCK ELEMENTS-ADDITIONAL QUESTIONS (VERY SHORT ANSWER QUESTIONS)
  1. Which of the following is an example of disproportionation reaction?

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  2. Write all posible oxidation state of an element having atomic number 2...

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  3. Why does vanadium pentoxide act as a catalyst?

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  4. Why Zn^(2+) salts are white while Ni^(2+) salts are blue

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  5. Out of [Sc(H(2)O)(6)]^(3+) and [Ti(H(2)O)(6)]^(3+)ions which is colo...

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  6. (a) Which metal in the first transition series (3d series) exhibits+ 1...

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  7. Copper (I) compounds are white and diamagnetic while copper(II) compou...

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  8. Which divalent metal ion has maximum paramagnetic character among the ...

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  9. Which of the two is paramagnetic : V (IV) or V (V) and why ?

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  10. Which reagent can be used to identify Ni^(2+) ion ?

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  11. What do you mean by 18 carat gold ?

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  12. Which elements are called ferrous metals ?

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  13. How many of the transition elements are called Platinum metals.

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  14. What are coinage metals ? Give example .

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  15. Write the formula of an oxo-anion of chromium (Cr) in which it shows t...

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  16. What happends when chromates are kept in acidic solution and dichromat...

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  17. Complete the following reaction : (NH(4))(2) Cr(2)O(7) overset("Heat...

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  18. Name one ore each of manganese and chromium.

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  19. What happens when KMnO(4) is heated with conc. H(2)SO(4) or acidified ...

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  20. 1-butyne on reaction with hot alkaline KMnO(4) gives:

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