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In which of the following reactions have...

In which of the following reactions have the underlined substance been reduced?

A

`underline("Carbon monoxide")+"copper oxide" to "carbon dioxide"+"copper"`

B

`underline("copper oxide")+"hydrochloric acid" to "carbon dioxide"+"water"`

C

`underline("hydrogen")+"iron oxide" to "carbon chloride"+"water"`

D

`underline("steam")+"iron" to "iron oxide"+"hydrogen"`

Text Solution

Verified by Experts

The correct Answer is:
D
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OP TANDON-OXIDATION AND REDUCTION (REDOX REACTIONS)-LEVEL A
  1. Which of the following statements is correct

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  2. Reduction never involves:

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

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

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

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  6. Phosphorus has the oxidation state +3 in

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

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  8. The highest oxidation state of Mn is shown by

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

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

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

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

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  13. The oxidation number of chlorine in HOCI is:

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

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

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

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

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

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

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

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