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The oxidation states of the most electro...

The oxidation states of the most electronegative element in the products of the reaction between `BaO_(2)` with dilute `H_(2) SO_(4)` are

A

0 and - 1

B

`-1 and -2`

C

`-2 and 0`

D

`-2 and +2`

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The correct Answer is:
B
Fluorine always exhibits ... Compounds
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Oxidation number is the charge which an atom of an element has in its ion or appears to have when present in the combined state. It is also called oxidation state. Oxidation number of any atom in the elementary state is zero. Oxidation number of a monoatomic ion is equal to the charge on it. In compounds of metals with non metals, metals have positive oxidation number while non metals have negative oxidation numbers. In compounds of two difference elements, the more electronegative element has negative oxidation number whereas the other has positive oxidation number. In complex ions, the sum of the oxidation number of all the atoms is equal to the charge on the ion. If a compound contains two or more atoms of the same element, they may have same or different oxidation states according as their chemical bonding is same or different. The oxidation state of the most electronegative element in the products of the reaction between BaO_(2) and H_(2)SO_(4) are

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AAKASH SERIES-REDOX REACTIONS-PRACTICE SHEET (EXERCISE - I) (LEVEL - I (MAIN))(Straight Objective Type Questions)
  1. The oxidation number that iron does not exhibit in its common compound...

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  2. The halogen that shows same oxidation state in all its compounds with ...

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  3. The oxidation states of the most electronegative element in the produc...

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  4. In which, iron has the lowest oxidation state ?

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  5. Oxidation state of oxygen in H2O2 is

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  6. In the conversion of Br(2) " to " BrO3 the oxidation state of bromine...

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

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  8. In nitric oxide (NO), the oxidation state of nitrogen is

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  9. In CH2 Cl2 the oxidation number of C is

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  10. Oxidation state of oxygen is -1 in the compound :

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  11. Chlorine has +1 oxidation state in

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  12. Oxidation number of S in S2Cl2 , is

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  13. In which  one of the following compounds the oxidation numberof iodine...

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  14. In MgH2 oxidation number of hydrogen is:

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  15. Which acts as a reducing agent ?

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  16. The compound that can work both as an oxidizing and reducing agent is

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  17. In the reaction, C + 4HNO(3) rarrCO(2) + 2H(2)O + 4NO(2), HNO3 acts a...

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  18. In the reaction, 2Ag + 2H(2)SO(4) rarrAg(2)SO(4) + 2H(2)O + SO(2) ,H(2...

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  19. In which reaction H2O2 acts reducing agent ?

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  20. When SO2 is passed in acidified potassium dichromate solution, the ox...

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