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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

`Fe + CuSO_(4) to Cu + ul(Fe)SO_(4)`

B

`ul(H_(2)) + Cl_(2) to 2ul(H)Cl`

C

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

D

`ul(Mn)O_(2) + 4HCl to ul(Mn)Cl_(2) + Cl_(2) + 2H_(2)O`

Text Solution

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The correct Answer is:
D
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AAKASH INSTITUTE-REDOX REACTIONS-Assignment (Section A) (Objective type Questions (one option is correct))
  1. In which of the following reactions the underlined substance is oxidis...

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  2. The oxidation state of phosphorus vary from

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

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  4. A metal ion M^(3+) loses three electrons , its oxidation number will b...

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  5. In which one of the following changes there are transfer of five elect...

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

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  7. The oxidation number of chlorine in HOCl is

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

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

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

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  11. Oxygen has an oxidation state of +2 in

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  12. A compound contains three elements A,B and C, if the oxidation number ...

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  13. In which of the following pairs. the oxidation states, of sulphuric an...

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  14. The oxidation number of sulphur in S(8), S(2)F(2) and H(2)S respective...

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  15. Oxidation number of C in HNC is :

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  16. The oxidation number of Cl in CaOCl(2) is

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  17. Which of the following molecules can act as an oxidising agent as well...

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  18. The oxidation state of iodine in ICI(3) is

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  19. The pair of compounds having metals in their highest oxidation state i...

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  20. Consider a titration of potassium dichromate solution with acidified M...

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