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In which reaction there is a change in v...

In which reaction there is a change in valency

A

`2NO_(2) rarr N_(2)O_(4)`

B

`2NO_(2)+H_(2)O rarr HNO_(2)+HNO_(3)`

C

`NH_(4)OH rarr NH_(4)^(+)+OH^(-)`

D

`CaCO_(3) rarr CaO+CO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`2overset(+4)(N)O_(2)+H_(2)O rarr HNO_(2)+Hoverset(+5)(N)O_(3)`. In this reaction oxidation state changes.
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ERRORLESS -SOME BASIC CONCEPTS OF CHEMISTRY-Ordinary Thinking (Objective Questions) Oxidation number and Oxidation state
  1. What is the oxidation number of Co in [Co(NH(3))(4)ClNO(2)]?

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  2. The oxidation state of nitrogen is highest in

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  3. In which reaction there is a change in valency

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  4. When SO(2) is passed through acidic solution of potassium dichromate, ...

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  5. The oxidation state of M^(3+) after removing three elelctrons is

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  6. Oxidation number of iodine varies from -

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  7. Which one of the following has the highest oxidation number of iodine?

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  8. The charge on cobalt in [Co(CN)(6)]^(-3) is -

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  9. Oxidation state of oxygen inhydrogen peroxide is

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

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  11. The atomic number of an element which can not show the oxidation stat...

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  12. The oxidation number of S in Na(2)S(4)O(6) is

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  13. Oxidation number of N in (NH(4))(2)SO(4) is

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  14. The oxidation number of sulphur in H(2)SO(4),H(2)S(2)O(4) and H(2)S(2)...

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  15. Which of the following statement is correct

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

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  17. Oxidation number of nitrogen in NaNO(2) is

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  18. The highest oxidation state of Mn is shown by

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  19. The oxidation number and the electronic configuration of sulphur in H(...

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  20. Oxidation number of N in NH(3) is

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