• Zigya Logo

    Previous Year Papers

    Download Solved Question Papers Free for Offline Practice and view Solutions Online.

    Test Series

    Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

    Test Yourself

    Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
    Advertisement

    The d-And-f-Block Elements

    Multiple Choice QuestionsShort Answer Type

    71.

    Why is copper sulphate pentahydrate coloured?

     
    172 Views
    Answer
    72. Transition metals usually form coloured ions, why?
    175 Views
    Answer
    Advertisement
    Zigya App

    73. Zn, Cd, Hg compounds are usually white. Explain.

    Transition elelmet exhibit colour due to d-d transition. d-d transition is possible only when d- subshell have unpaired electron.All show +2 oxidation state involving (n–1) d10 configuration having no unpaired electron in subshell. Thus d-d transition is not possible.
    411 Views
  • Switch Icon Switch
    • Advertisement
    74. Give one example of any compound in which the oxidation state of Ni is zero.
    162 Views
    Answer
    Advertisement
    75. Why does V2O5 act as catalyst?
    262 Views
    Answer
    76. Transition metals form a large number of interstitial compounds. Explain.
    527 Views
    Answer
    77. What is an alloy? Name the two types of alloy formed by transition elements. Give one example of a solid solution in relation to a smooth alloy.
    185 Views
    Answer
    78. Give two properties in which interstitial compounds differ from its elements.
    174 Views
    Answer
    Advertisement
    79. What is meant by disproportionation of an oxidation state? Give an example.
    195 Views
    Answer
    80. Cu2+ is more stable than Cu+, Explain.
    972 Views
    Answer
    Advertisement
    Flag Popup Icon
    Flag it
    Submit
    Flag Popup Icon
    Switch to
    flexipad
    Share It Icon
    Share it
    Share It
    Share it