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Which of the following reactions is an e...

Which of the following reactions is an example of autoreduction ?

A

`Fe_(3)O_(4)+4COrarr3Fe+4CO_(2)`

B

`Cu_(2)O+Crarr 2Cu+CO`

C

`Cu_((aa))^(2+) +Fe_((g)) rarrCu_((s))+Fe_((aq))^(2+)`

D

`Cu_(2)+1/2Cu_(2)S rarr 3Cu +1/2SO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
`overset(+1)(Cu_2O)+1/2overset(+1)(Cu_2)overset(-2)Srarr3Cu+1/2overset(+4)(SO_2)`
It is not intermolecular redox reaction .
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AAKASH SERIES-REDOX REACTIONS-PRACTICE SHEET (EXERCISE - I) ( LEVEL-II (ADVANCED))(Straight Objective Type Questions )
  1. When SO2 is passed in a solution of potassium iodate, the oxidation s...

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  2. Among the following , identify the species with an atom in + 6 oxidati...

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  3. K(4)[Fe(CN)(6)] is a

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  4. Experimentally it was found that a metal oxide has formula M(0.98)O. ...

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  5. Thiosulphate reacts differently with iodine and bromine in the reactio...

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  6. Which of the following arrangements represent increasing oxidation num...

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  7. Identify disproportionation reaction

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  8. In the preparation of HNO3 we get NO gas by catalytic oxidation of am...

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  9. The electronic configuration of Cu(II) is 3d^9 whereas that of Cu(I) ...

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  10. KMnO4 acts as an oxidising agent in alkaline medium, when alkaline KM...

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  11. Strong reducing behaviour of H(3)PO(2) is due to

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  12. Which of the following equations depict the oxidizing nature of hydrog...

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  13. Which of the following equation depicts reducing nature of H(2)O(2) ?

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  14. Which of the following reactions is an example of autoreduction ?

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  15. For the reaction : F(2)+H(2)O overset("Ice cold") underset("temperatur...

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  16. In which SO(2) acts as oxidant, while reacting with

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  17. Among the properties (i) reducing (ii) oxidising (iii) complexing the ...

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  18. Which substance serves as a reducing agent in the following reactions ...

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  19. Select the incorrect statement for developing of an exposed camera fil...

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  20. Which one is not correct for the reaction (CN)(2) + H(2)O rarr HCN + H...

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