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On adding KMnO(4) to cold conc. H(2)SO(4...

On adding `KMnO_(4)` to cold conc. `H_(2)SO_(4),` it gives

A

`MnO_(2)`

B

`Mn_(2)O_(3)`

C

`Mn_(2)O_(7)`

D

`MnO_(3).`

Text Solution

Verified by Experts

The correct Answer is:
C
`2K MnO_(4)+ 2H_(2) SO_(4)to 2KHSO_(4)+ underset(("Green oily liquid"))(Mn_(2) O_(7)+H_(2)O)`
`Mn_(2)O_(7)` explodes on heating.
`2Mn_(2)O_(7)overset(Delta)to4MnO_(2)+3O_(2)`
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NIKITA PUBLICATION-D-AND F-BLOCK ELEMENTS-MULTIPLE CHOICE QUESTIONS
  1. Pick out the incorrect statement.

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  2. MnO(4)^(-) ions can be reduced in strongly alkaline medium to give

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  3. On adding KMnO(4) to cold conc. H(2)SO(4), it gives

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  4. In acidic medium oxidation state of Mn changes from

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  5. The equivalent weights of KMnO(4) as an oxidising agent in acidic and ...

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  6. When KMnO(4) solution is added to hot oxalic acid solution the decolo...

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  7. Equivalent weight of KMnO(4) when it is convert into MnSO(4) is

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  8. Acidified KMnO(4) solution is decolourized by

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  9. For the redox reaction, MnO(4)^(-) + C(2)O(4)^(2-) + H^(+) rarr Mn^(...

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  10. Potassium manganite (K(2)MnO (3)) is formed when

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  11. Which of the following statements is not true ?

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  12. Baeyer's reagent is:

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  13. Following ions are equilibrium at Cr(2) O(7)^(2-) hArr CrO(4)^(2-)

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  14. The mineral from which potassium permagnate is manufactured

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  15. MnO(4)^(2-) is

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  16. The reaction, MnO(4)^(2-) +e^(-)hArr MnO(4)^(-) is shifted to right in

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  17. Equivalent mass of kMnO(4) in alkaline medium is

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  18. When an ecidified solution of ferrous sulphiate is treated with potass...

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  19. The shape of MnO(4)^(-) ion and the hybridisation of Mn in MnO(4)^(-) ...

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  20. MnO(4)^(2-) has "" geometry

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