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Oxidation number of sulphur in Na(2)S(2)...

Oxidation number of sulphur in `Na_(2)S_(2)O_(3)` is

A

`+2`

B

`+4`

C

`-2`

D

0

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The correct Answer is:
A
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ALLEN-REDOX REACTIONS-Exercise - 1
  1. Oxidation number of Fe in Fe(0.94) O is :

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  2. Oxidation number of carbon in carbon suboxide (C(3)O(2)) is :

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  3. Oxidation number of sulphur in Na(2)S(2)O(3) is

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  4. Two oxidation states for chlorine are found in the compound :

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  5. {:(,"Compounds",,"O.N."),((A),KMn^(**)O(4),(1),+4),((B),Ni^(**)(CO)(4)...

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  6. -1//3 oxidation state of nitrogen will be obtained in case of :

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  7. Oxidation number of Fe in Fe(3)O(4)are:

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  8. Compound YBa(2)Cu(3)O(7) is a super conductor The O.N. of the copper i...

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  9. Which one of the following is a redox reaction ?

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  10. Which of the following is not a redox change ?

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  11. In the context of the reaction, 4Fe+3O(2)rarr4Fe^(3+)+6O^(2-) , whic...

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

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  13. Which is a redox reaction :

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  14. Which of the following examples does not represent disproportionation ...

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  15. The decomposition of KClO(3) to KCl and O(2) on heating is an example ...

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  16. Which of the following change represents a disproportionation reaction...

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  17. One mole on iron [55.8 gm], when oxidised to +2 oxidation state gives ...

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  18. How many electrons should X(2)H(4) liberate so that in the new compoun...

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  19. A reducing agent is a substance Which can:

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  20. The reaction of H(2)S+H(2)O(2) rarr S+2H(2)O manifests

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