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The catalyst used in the manufacture of ...

The catalyst used in the manufacture of `H_2 SO_4` by contact process is.

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Vanadium pentoxide `V_2O_5`
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MODERN PUBLICATION-D AND F-BLOCK ELEMENTS-PRACTICE PROBLEM
  1. Explain why Zn^(2+) salts are colouless while Ni^(2+) salts are colour...

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  2. A compound has been found to have magnetic moment of 3.9 B.M. How many...

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  3. The catalyst used in the manufacture of H2 SO4 by contact process is.

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  4. Give reason, Mn^(2+) ion is more paramagnetic than Fe^(2+) ion.

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  5. The oxidation state of Cr in K(2)Cr(2)O(7) is:

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  6. The orange colour of dichromate solution changes of blue on heating wi...

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  7. MnO2 on heating with potassium hydroxide in the presence of air forms...

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  8. Chromite is ...........

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  9. KMnO4 overset("heat")(to) ………… + MnO2 + …………..

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  10. Write ionic equation showing KMnO4 acting as an oxidising agent in ac...

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  11. What is the oxidation state of (i) Cr in dichromate ion (ii) ...

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  12. The equivalent weight of KMnO(4) in (a) neutral medium, (b) acidic med...

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  13. Complete the chemical reactions : (i) MnO4^(-) + SO2 + H^(+) to ...

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  14. What is the shape of chromate ion ?

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  15. In chromyl chloride test orange red vapours are obtained. These are du...

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  16. Which out of the two ,La(OH)(3) and Lu(OH)(3), is more basic and why?

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  17. Most stable oxidation state of Lanthanoids

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  18. How many unpaired electrons are present in Gd(Z = 64) ?

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  19. Name the actinoid used for the manufacture of fine rods for atomic rea...

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  20. Arrange Ce^(3+) (Z = 58), Sm^(3+) (Z = 62) and Yb^(3+ ) (Z = 70) in d...

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