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………..is used as catalyst for oxidation o...

………..is used as catalyst for oxidation of `SO_2` to `SO_3` in contact process.

A

`MnO_2`

B

`V_2O_5`

C

Mn

D

Ni

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CHETANA PUBLICATION-Transition and Inner Transition Elements-EXERCISE
  1. ………..is used in making statues, medals and trophies

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  2. ……….is used to manufacture of steel

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  3. ………..is used as catalyst for oxidation of SO2 to SO3 in contact proces...

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  4. ........ is used to convert inedible oils into solid fat for productio...

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  5. ……..is used in manufacture of ammonia by Haber's process

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  6. Which of the following Mn^(+2),Ni^(+2),Ti^(+2),V^(+2) smallest radii?

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  7. Which of the following elements belong to second transition series?

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  8. Which of the following is not radioactive

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  9. Which of the following ions are white?

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  10. How will you prepare potassium permanganate from manganate.

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  11. Define a mineral

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  12. Give any two uses of kMnO4

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  13. What is lanthanide contraction? Why is it observed?

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  14. Why is the ground state electronic configuration of gadolinium and law...

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  15. What is the oxidation state of Mn in Mn4^(2-)

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  16. What is the oxidation state of Mn in MnO4^(-1)

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  17. Why Zn^(+2) salts are colourless while Ni^(+2) salts are coloured?

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  18. What are the different steps involved in the manufacture of potassium ...

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  19. What are the difference between cast iron, wrought iron and steel.

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  20. Make a summaries of the reactions in the blast furnace.

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