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Which substance serves as a reducing age...

Which substance serves as a reducing agent in the following reactions ?
`14H^(+) +Cr_(2)O_(7)^(2-) +3Ni rarr 2Cr^(3+) + 7H_(2)O+3Ni^(2+),`

A

`H_2O`

B

Pb

C

`H^(+)`

D

`Cr_(2)O_(7)^(2-)`

Text Solution

Verified by Experts

The correct Answer is:
B
`underset(R.A)(Pb^(0))rarrPb^(2+)`
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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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