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The value of n in the following half equ...

The value of n in the following half equation is `MnO_4^(-) + 2H_2O + ne rarr MnO_2 + 4OH^(-)`

A

3

B

5

C

4

D

6

Text Solution

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The correct Answer is:
A
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AAKASH INSTITUTE-MOCK TEST 14-Exercise
  1. In the given reaction: P4 + NaOH + H2O rarr PH3 + NaH2PO2

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  2. In the conversion of I2 rarr IO3^-the oxidation state of iodine change...

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  3. The oxidation state of Mn in MnO4^(2-) is

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  4. The oxidation state of phosphorous in various compounds vary between

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  5. The average oxidation state of sulphur atom in S4O6^(2-) ion is

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  6. Which is not an example of disproportionation reaction?

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  7. For the redox reaction: MnO4 +C2O4^(2-) + H^+ rarr Mn^(2+) + CO2 + H2O...

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  8. The equivalent weight ofMnCl2, is half of its molecular weight when it...

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  9. The value of n in the following half equation is MnO4^(-) + 2H2O + ne ...

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  10. The oxidation state of Cr in CrO(5) is:

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  11. For the galvanic cell: Zn(s) | Zn^(2+)(aq) (1.0 M) || Ni^(2+)(aq) (1.0...

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  12. Which of the following metals will not react dilute hydrochloric acid?

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  13. Syngas is a mixture of

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  14. Zn(s) + Cu^(2+)(aq) rarr Zn^(2+)(aq) + Cu(s) The cell representation f...

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  15. In which of the compounds the oxidation state of hydrogen is -1?

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  16. In iodometric titration which indicator is used to detect end point of...

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  17. If a small Cu rod is placed in an aqueous solution of ferrous salt, th...

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  18. The standard reduction potential of zinc and silver at 298 K are (AAKM...

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  19. Four metals A, B, C and D are having standard reduction potential as -...

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  20. In faintly alkaline solution, 4 moles of permanganate anion quantitati...

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