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MnO(2)+4H^(+)+e^(-)rarrMn^(+3)+2H(2)O ...

`MnO_(2)+4H^(+)+e^(-)rarrMn^(+3)+2H_(2)O`
In the above reaction oxidation number of Mn change from :-

A

`+2` to `-3`

B

`+4` to `-3`

C

`+2` to `+3`

D

`+4` to `+3`

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Verified by Experts

The correct Answer is:
D
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ALLEN-REDOX REACTIONS-EXERICSE - 3
  1. Oxidation number of Xe in XeF(5)^(-) is :

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  2. Which has zero oxidation number :-

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  3. MnO(2)+4H^(+)+e^(-)rarrMn^(+3)+2H(2)O In the above reaction oxidatio...

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  4. Which is the best description of the behaviour of bromine in the react...

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  5. Oxidation involves

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  6. If in chemical reaction, Fe^(+2) is converted into Fe^(+3), then Fe^(+...

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  7. Zn+H(2)SO(4)rarrZnSO(4)+H(2) Zn undergoes -

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  8. The oxidation state of Cr in Cr(2)O(7)^(2-) is

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  9. The number of moles of KMnO(4) reduced by 1 "mol of" KI in alkaline me...

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  10. The correct order of acidic strength is -

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  11. Number of moles of MnO(4)^(-) required to oxidise one mole of ferrous ...

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  12. Oxidation number of P in PO(4)^(3-), of S in SO(4)^(2-) and that of Cr...

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  13. What will be the oxidation number of Fe in K(3)[Fe(CN)(6)] :-

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  14. In the reaction 2FeCl(3)+H(2)Srarr2FeCl(2)+2HCl+S

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  15. For the redox reation MnO(4)^(-)+C(2)O(4)^(2-)+H^(+)rarrMn^(2+)CO(2)...

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  16. Which of the following act both as oxidant & reductant :-

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  17. Which of the following reaction is spontaneous oxidation - reduction r...

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  18. For reaction : Cr(2)O(7)^(-2)+14H^(+)rarr2Cr^(+3)+7H(2)O, How many e...

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  19. Oxidising agents have high :-

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  20. The ratio of coefficient of HNO(3), Fe(NO(3))(2) and NH(4)NO(3) in the...

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