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In which of the following oxyacids, phos...

In which of the following oxyacids, phosphorus shows highest oxidation state?

A

`H_(4)P_(2)O_(7)`

B

`H_(3)PO_(3)`

C

`H_(4)P_(2)O_(5)`

D

`H_(4)P_(2)O_(6)`

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Knowledge Check

  • Valency and oxidation number are different for an element. Valency of carbon is generally 4, however, the oxidation state may be-4,-2,0, +2,-1, etc. In the compounds containing carbon, hydrogen and oxygen, the oxidation number of carbon can be calculated as, Oxidation number of carbon =(2n_o - n_H)/( n_c) where, n_(H), n_o and n_c are number of respective atoms. Which of the following compounds of carbon has highest oxidation state?

    A
    `CH_4`
    B
    `CH_3 OH`
    C
    `CH_2 O`
    D
    `HCOOH`

  • In which of the following compounds does hydrogen have an oxidation state of -1?

    A
    `CH_4`
    B
    `NH_3`
    C
    HCl
    D
    `CaH_2`

  • Nitrogen shows different oxidation states in different oxides. In which of the following oxides, nitrogen is in +4 oxidation state? NO , N_2 O , N_2 O_3 , NO_2

    A
    NO
    B
    `N_2O`
    C
    `N_2O_3`
    D
    `NO_2`
    • BRILLIANT PUBLICATION-REDOX REACTION & ELECTROCHEMISTRY-QUESTION (REDOX REACTION) (LEVEL -II)
    1. In which of the following oxyacids, phosphorus shows highest oxidation...

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    2. In which of the following , iron has oxidation state of +1?

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    3. Oxidation numbers of sulphur in the anions SO(3)^(2-),S(2)O(4)^(2-) an...

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    4. In which of the following rections H(2)O(2) is not an oxidising agent?

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    5. Which among the following is not a disproportionation?

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    6. In which of the following molecules, the same element doesnot exhibit...

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    7. Sulphur does not exhibit +6 oxidation state in

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    8. In the reaction As(2)S(3)+NO(3)^(-)+H(2)OtoAsO(4)^(3-)+SO(4)^(2-)+H^(+...

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    9. In the disproportionation reaction H(3)PO(2)toH(3)PO(3)+PH(3) (atomic ...

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    10. Consider each equation given in the balanced form. In which case the n...

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    11. To an aq. Solution containing anions a few drops of acidified KMnO(4) ...

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    12. Consider the reaction Cl(2)O(7)+H(2)O(2)overset(OH^(-))(to)ClO(2)^(-)+...

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    13. MnO(4)^(-) is reduced to Mn^(2+) in acidic medium and to MnO(2) in neu...

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    14. A standard solution of K(2)Cr(2)O(7) (mol. Mass 294) contains 2.94 g d...

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    15. V(1)mL of 0.1M K(2)Cr(2)O(7) is needed for complete oxidation of 0.678...

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    16. In the balanced equation xCu(2)O+yNO(3)^(-)+H^(+)toCu^(2+)+NO+H(2)O. W...

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    17. 0.1 mol of KMnO(4) in acid medium can oxidise 1. 0.5 mol Mohr's salt ...

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    18. The number of moles of KmnO(4) reduced by 1 mol of Kl in alkaline medi...

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    19. What is the mass of benzyl alcohol that can be oxidised to benzoic aci...

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    20. x moles of potassium dichromate oxidises 1 mole of ferrous oxalate in...

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