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In which of the following reactions, the...

In which of the following reactions, the underlined element has decreased its oxidation number during the reaction?

A

`underline(Fe)+CuSO_(4) to Cu+FeSO_(4)`

B

`underline(H_(2))+Cl_(2) to 2HCl`

C

`underline(C)+H_(2)O to CO+H_(2)`

D

`underline(MnO_(2))+4HCl to MnCl_(2)+Cl_(2)+2H_(2)O`

Text Solution

Verified by Experts

The correct Answer is:
C
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OP TANDON-OXIDATION AND REDUCTION (REDOX REACTIONS)-LEVEL A
  1. Reduction never involves:

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  2. In which of the following reactions have the underlined substance been...

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  3. In which of the following reactions, the underlined element has decrea...

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  4. Select the compound in which chlorine is assigned the oxidation number...

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  5. Phosphorus has the oxidation state +3 in

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

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  7. The highest oxidation state of Mn is shown by

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  8. Oxidation number of P in Ba(H(2)PO(2))(2) is

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  9. The oxidation states of the most electronegative elements in the produ...

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  10. Following reaction describes the rusting of iron 4Fe+3O(2) rarr 4Fe^...

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  11. In the reaction of sodium thiosulphate with 12 in aqueous medium the e...

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  12. The oxidation number of chlorine in HOCI is:

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  13. In the reaction, Cl(2)+OH^(-)rarrCl^(-)+ClO(4)^(-1)+H(2)O, chlorine ...

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  14. The oxidation number of arsenic atom in H(3)AsO(4) is :-

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  15. In which one of the following reactions, hydrogen is acts as an oxidis...

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

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  17. The oxidation number of P in Mg(2)P(2)O(7) is

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  18. The oxidation number of phosphorus in PO(4)^(3-), P(4)O(10), and P(2)O...

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  19. The oxidation number of Cr in K(2)Cr(2)O(7) is

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  20. Bromine reacts with hot aqueous alkali to give bromide and bromate. Wh...

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