Only One Option Correct Type
Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.
Q.
Of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one of them?
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]
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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?
The catalytic activity of transition metals and their compounds is mainly due to
Many copper (I) compounds are unstable in aqueous solution and undergo disproportionation as 2Cu+ → Cu + Cu2+ . This is due to
Gun metal is an alloy of
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)
[Ti (H2O)6]3+ absorbs green and yellow region part of visible light. Then the transmitted colour of the compound is
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
In which of the following the stability of two oxidation states is correctly represented?
One or More than One Options Correct Type
Direction (Q. Nos. 11-15) This section contains 5 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.
Q.
Which one of the following arrangements represent the correct order of the property stated against it?
The metals present in German silver alloy are
Paramagnetic Curie temperature in Kelvin for iron is equal to :
+8 oxidation state is/are shown by
Ions having same colour in aqueous solution are
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?
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?
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.
Match the Column I with Column II and mark the correct option from the given codes.
Match the Column I with Column II and mark the correct option from the given codes.
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.
Green vitriol is FeSO4.xH2O and white vitriol is ZnSO4.yH2O, Then, the values of x and y are
Oxidation state of chromium in CrO5 is +x. Here, value of x is
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
Statement Type
Direction (Q. No. 25) This section is based on Statement I and Statement II. Select the correct answer from the codes given below.
Q.
Statement l : ,Cu2O and Ni-DMG complex are coloured.
Statement II : It is due to charge transfer transition.