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In dilute alkaline solution,MnO(4)^(-) c...

In dilute alkaline solution,`MnO_(4)^(-)` changes to:

A

`KMnO_(4)^(2-)`

B

`MnO_(2)`

C

`Mn_(2)O_(3)`

D

`MnO`

Text Solution

Verified by Experts

The correct Answer is:
B
`MnO_(4)^(-)+2H_(2)O+3e^(-) to MnO_(2)+4OH^(-)`(weak alkaline medium)`
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RESONANCE-D BLOCK ELEMENTS-EXERCISE-I PART-II
  1. When copper is placed in the atmosphere for sufficient time, a green c...

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  2. The solubility of silver bromide in hypo solution (excess) is due to ...

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  3. In dilute alkaline solution,MnO(4)^(-) changes to:

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  4. Cl2 gas is obtained by various reactions select the reactions from the...

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  5. CuSO(4) solution + lime is called:

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  6. The developer used in photography is an alkaline solution of:

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  7. When acidified solution of K(2)Cr(2)O(7) is shaken with aqeous solutio...

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  8. FeCl(3) dissolves in:

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  9. Which of the following compounds is used as the startingn material for...

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  10. Cr)(3) dissolved in aqueous NaOH to give:

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  11. The final product obtained for the following reaction is: KMnO(4)("ex...

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  12. When AgNo(3)(aq) reacts with excess of iodine, we get:

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  13. ZnO+CoOundersetto(Delta)X,Product X colour is:

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  14. The compound that gets oxidised even on exposure to atmosphere is:

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  15. Select correct statement(s).

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  16. The f-block elements of the periodic table contains those element in w...

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  17. Among the lanthanides the one obtained by synthetic method is

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  18. The most common lanthanoide is :

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  19. Across the lanthanide series , the basicity of the lanthanoide hydroxi...

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  20. The +3 ion of which one of the following has half filled 4f subshell?

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