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Reaction of KMnO4 in neutral or very wea...

Reaction of `KMnO_4` in neutral or very weakly acidic solution can be represented as

A

`MnO_4^(-)+2H_2O+3e^(-)rarrMnO_2+4OH^-`

B

`2MnO_4^(-)+2OH^(-)rarr2MnO_4^(2-)+1//2O_2+H_2O`

C

`MnO_4^(-)+8H^++5e^(-)rarrMn^(2+)+4H_2O`

D

`MnO_4^(-)+e^(-)rarrMnO_4^(2-)`

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-REVISION EXERCISE -d-BLOCK ELEMENTS
  1. The observed and calculated E^0 values for M^(+2)/M are same for

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  2. When a large amount of KMnO4 is added to concentrated H2SO4, an explos...

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  3. Reaction of KMnO4 in neutral or very weakly acidic solution can be rep...

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  4. When KMnO4 is added to oxalic acid, the decolourisation is slow in the...

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  5. A solution of potassium chromate is treated with an excess of dilute n...

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  6. K2Cr2O7 cannot be used for

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  7. When acidified solution of potassium dichromate is shaken with aqueous...

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  8. The blue colour produced on adding hydrogen peroxide to acidified K2Cr...

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  9. Which of the following metals is known to form acidic oxide

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  10. In the dichromate dianion

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  11. The oxidation state of chromium in the final product formed by the rea...

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  12. Which of the following element has f electro nic configuration in its ...

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  13. The natures of the oxides CrO and CrO3, respectively

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  14. Acedified K2Cr2O7 cannot oxidise

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  15. The equilibrium Cr2O7^(2-) hArr 2CrO4^(2-)

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  16. The correct statement among the following is

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  17. Identify the correct statements among the following I) Both Cr and...

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  18. Which of the following has very high IP2 value

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  19. Zn, Cd and Hg are only 'd' block elements but not transition elements ...

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  20. Acidified KMnO4 oxidizes nitrites to

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