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In which of the following compounds of C...

In which of the following compounds of Cr, the oxidation number Cr is not `+6` :-

A

`CrO_(3)`

B

`CrO_(2)Cl_(2)`

C

`Cr_(2)O_(3)`

D

`K_(2)Cr_(2)O_(7)`

Text Solution

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The correct Answer is:
C
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ALLEN-REDOX REACTIONS-EXERICSE - 2
  1. The oxidation number of sulphur in H(2)S(2)O(8) is:

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  2. In which of the following reaction H(2)O(2) acts as reducing agent :-

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  3. In which of the following compounds of Cr, the oxidation number Cr is ...

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  4. Oxidation state of cobalt in [Co(NH(3))(4)(H(2)O)Cl]SO(4) is

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  5. A sulphur containing species that can not be a reducing agent is :-

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  6. In the reaction CH(3)OHrarrHCOOH, the number of electrons that must be...

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  7. Oxidation number of carbon in graphite is :-

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  8. When H(2) reacts with Na, it acts as

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  9. Oxidation number of 'N' in N(3)H (hydrazoic acid) is :-

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  10. Phosphorous has the oxidation state of +3 in :

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  11. Which of the following reaction involves oxidation reduction?

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  12. Which one is the oxidising agent in the reaction given below 2CrO(4)...

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

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  14. In substance Mg(HXO(3)), the oxidation number of X is :-

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  15. In the following reaction: 3Fe+4H(2)OrarrFe(3)O(4)+4H(2), if the ato...

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  16. In the course of a chemical reaction an oxidant -

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  17. Which statement is wrong?

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  18. The reaction 2K(2)MnO(4)+Cl(2)rarr 2KMnO(4)+2KCl is an example of

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  19. Which of the following reactions involves neither oxidation nor reduct...

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  20. In the reaction :- C+4HNO(3)rarrCO(2)+2H(2)O+4NO(2) HNO(3) acts as...

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