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NEET-XII-Chemistry

08: The d-and f-Block Elements

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Qstn# II-15 Prvs-QstnNext-Qstn
  • #15
    Describe the oxidising action of potassium dichromate and write the ionic equations for its reaction with:
    () iodide () iron(II) solution and () H2S
    () iron(II) solution and () H2S
    () iron(II) solution and () H2S
    () iron(II) solution and () H2S
    Ans : acts as a very strong oxidising agent in the acidic medium.



    takes up electrons to get reduced and acts as an oxidising agent. The reaction of K2Cr2O7 with other iodide, iron (II) solution, and H2S are given below.
    () oxidizes iodide to iodine.


    () oxidizes iron (II) solution to iron (III) solution i.e., ferrous ions to ferric ions.


    () oxidizes H2S to sulphur.


    () oxidizes iron (II) solution to iron (III) solution i.e., ferrous ions to ferric ions.


    () oxidizes H2S to sulphur.


    () oxidizes iron (II) solution to iron (III) solution i.e., ferrous ions to ferric ions.


    () oxidizes H2S to sulphur.


    () oxidizes iron (II) solution to iron (III) solution i.e., ferrous ions to ferric ions.


    () oxidizes H2S to sulphur.


  • #15-i
    iodide () iron(II) solution and () H2S
    () iron(II) solution and () H2S
    () iron(II) solution and () H2S
    Ans : oxidizes iodide to iodine.


    () oxidizes iron (II) solution to iron (III) solution i.e., ferrous ions to ferric ions.


    () oxidizes H2S to sulphur.


    () oxidizes iron (II) solution to iron (III) solution i.e., ferrous ions to ferric ions.


    () oxidizes H2S to sulphur.


    () oxidizes iron (II) solution to iron (III) solution i.e., ferrous ions to ferric ions.


    () oxidizes H2S to sulphur.


  • #15-ii
    iron(II) solution and
    Ans : oxidizes iron (II) solution to iron (III) solution i.e., ferrous ions to ferric ions.


  • #15-iii
    H2S
    Ans : oxidizes H2S to sulphur.