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  • Question 1
    4 / -1

    Of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one of them?

  • Question 2
    4 / -1

    Among the following series of transition metal ions, the one where all metal ions have 3d2 electronic configuration is (Atomic number, Ti = 22, V = 23, Cr = 24, Mn = 25) 

    [AIEEE 2004]

  • Question 3
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    For the four successive transition elements (Cr, Mn, Fe and Co), the stability of + 2 oxidation state will be there in which of the following order?

  • Question 4
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    The catalytic activity of transition metals and their compounds is mainly due to

  • Question 5
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    Many copper (I) compounds are unstable in aqueous solution and undergo disproportionation as 2Cu+ → Cu + Cu2+ . This is due to

  • Question 6
    4 / -1

    Gun metal is an alloy of

  • Question 7
    4 / -1

    In which of the following pairs both the ions are coloured in aqueous solution? (Atomic number, Sc = 21, Ti = 22, Ni = 28, Cu = 29, Co = 27)

  • Question 8
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    [Ti (H2O)6]3+ absorbs green and yellow region part of visible light. Then the transmitted colour of the compound is

  • Question 9
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    Compound of metal ion MX+(Z = 26) has a spin only magnetic moment of   BM The number of unpaired electrons and x value in the compound are

  • Question 10
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    In which of the following the stability of two oxidation states is correctly represented?

  • Question 11
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    According to IUPAC nomenclature sodium nitroprusside dihydrate is named as

  • Question 12
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    In Fe(CO)5, the Fe-C bond possesses:

  • Question 13
    4 / -1

     Paramagnetic Curie temperature in Kelvin for iron is equal to :

  • Question 14
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    +8 oxidation state is/are shown by

     

  • Question 15
    4 / -1

    The pair that has similar atomic radii is

  • Question 16
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    Comprehension Type

    Direction (Q, Nos. 16 and 17) This section contains a paragraph, describing theory, experiments, data, etc. Two questions related to the paragraph have been given. Each question has only one correct answer among the four given options (a), (b), (c) and (d).

    Passage

    Transition metals and their compounds have paramagnetic properties due to the presence of unpaired electrons in (n - 1)d-orbitals. The paramagnetic behaviour is expressed in terms of magnetic moment which is because of the spin of the unpaired electrons (n). It is given as
    Magnetic moment =   
    Majority of transition metal compounds are coloured both in solid state as well as in aqueous solution. This is also due to the presence of unpaired electrons in (n - 1) d-orbitals, d-orbitals splitting and d-d transition of electrons absorbing suitable visible light.

    Q. 

    Which of the following exhibit colour due to charge transfer phenomenon, but not due to d-d transition?

  • Question 17
    4 / -1

    Transition metals and their compounds have paramagnetic properties due to the presence of unpaired electrons in (n - 1)d-orbitals. The paramagnetic behaviour is expressed in terms of magnetic moment which is because of the spin of the unpaired electrons (n). It is given as
    Magnetic moment =   
    Majority of transition metal compounds are coloured both in solid state as well as in aqueous solution. This is also due to the presence of unpaired electrons in (n - 1) d-orbitals, d-orbitals splitting and d-d transition of electrons absorbing suitable visible light.

    Q. 

    Which pair of ions are expected to be diamagnetic?

  • Question 18
    4 / -1

    Matching List Type

    Direction (Q. No. 18-20) Choices fo r the correct combination of elements from Column I and Column II are given as options (a), (b), (c) and (d), out of which one is correct.

    Q. 

    Match the Column I with Column II and mark the correct option from the given codes.

  • Question 19
    4 / -1

    Match the Column I with Column II and mark the correct option from the given codes.

  • Question 20
    4 / -1

    Match the Column I with Column II and mark the correct option from the given codes.

  • Question 21
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    One Integer Value Correct Type

    Direction (Q. Nos. 21-24) This section contains 4 questions. When worked out will result in an integer from 0 to 9 (both inclusive).

    Q. 

    Number of alloys that contain nickel among the following solder, gun metal, German silver, nichrome, monel metal, constanton, bell metal, duralumin, type metal, invar, alnico.

     

  • Question 22
    4 / -1

     

    Green vitriol is FeSO4.xH2O and white vitriol is ZnSO4.yH2O, Then, the values of x and y are

     

  • Question 23
    4 / -1

     

    Oxidation state of chromium in CrO5 is +x. Here, value of x is

     

  • Question 24
    4 / -1

     

    Number of compounds in which metal has zero oxidation state

    WO3,Ni(CO)4, MoO3, Fe(CO)5, Cr(CO)6, [Pt(NH3)2CI2], Co2(CO)8 and Mn2(CO)10

     

  • Question 25
    4 / -1

    Statement l : ,Cu2O and Ni-DMG complex are coloured.

    Statement II : It is due to charge transfer transition.

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