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12th Standard Chemistry Coordination Chemistry English Medium Free Online Test One Mark Questions 2020 - 2021

12th Standard

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Chemistry

Time : 00:20:00 Hrs
Total Marks : 20
    Answer all the questions
    20 x 1 = 20
  1. The sum of primary valence and secondary valence of the metal M in the complex [M(en)2(Ox)]Cl isL

    (a)

    3

    (b)

    6

    (c)

    -3

    (d)

    9

  2. As per IUPAC guidelines, the name of the complex [Co(en)2(ONO)Cl]Cl is

    (a)

    chlorobisethylenediaminenitritocobalt(III) chloride

    (b)

    chloridobis(ethane-1,2-diamine)nitro  K-Ocobaltate(III) chloride

    (c)

    chloridobis(ethane-1,2-diammine)nitrito K-Ocobalt(II) chloridde

    (d)

    chloridobis(ethane-1,2-diamine)nitro K-Ocobalt(III) chloride

  3. A magnetic moment of 1.73BM will be shown by one among the following (NEET)

    (a)

    TiCl4

    (b)

    [CoCl6]4-

    (c)

    [Cu(NH3)4]2+

    (d)

    [Ni(CN)4]2-

  4. In which of the following coordination entities the magnitude of Δ0 will be maximum?

    (a)

    [Co(CN)6]3-

    (b)

    [Co(C2O4)]3-

    (c)

    [Co(H2O)6]3+

    (d)

    [Co(NH3)6]3+

  5. Which type of isomerism is exhibited by [Pt(NH3)2Cl2]?

    (a)

    Coordination isomerism

    (b)

    Linkage isomerism

    (c)

    Optical isomerism

    (d)

    Geometrical isomerism

  6. Which one of the following pairs represents linkage isomers?

    (a)

    [Cu(NH3)4][ptCl4] and [pt(NH3)4][CuCl4]

    (b)

    [Co(NH3)5(NO3)]SO4 and [Co(NH3)5(ONO)]

    (c)

    [Co(NH3)4(NCS)2]ct and [Co(NH3)4(SCN)2]Cl

    (d)

    both (b) and (c)

  7. Formula of tris(ethane-1,2-diamine)iron(II)phosphate

    (a)

    [Fe(CH3-CH(NH2)2)3](PO4)3

    (b)

    [Fe(H2N-CH-CH2-NH2)3](PO4)

    (c)

    [Fe(H2N-CH2-CH2-NH2)3](PO4)2

    (d)

    [Fe(H2N-CH2-CH2-NH2-NH2)3]3(PO4)2

  8. Fac-mer isomerism is shown by

    (a)

    [CO(en)3]3+

    (b)

    [Co(NH3)4(Cl)2]+

    (c)

    [Co(NH3)3(Cl)3]

    (d)

    [Co(NH3)5Cl]SO4

  9. An example of an ambidentate ligand is

    (a)

    CN-

    (b)

    Cl-

    (c)

    NO-2

    (d)

    I-

  10. In [Fe11(CN)6]4-, the central metal ion is

    (a)

    Fe

    (b)

    Fe2+

    (c)

    Fe3+

    (d)

    CN-

  11. A metal ion from the first transition series forms an octahedral complex with magnetic moment of 4.9 BM and another octahedral, complex which is diamagnetic. The metal ion is

    (a)

    Fe2+

    (b)

    Co2+

    (c)

    Mn2+

    (d)

    Ni2+

  12. Which of the following complexes does not give white precipitate with AgNO3?

    (a)

    [Co (NH3)6] Cl3

    (b)

    [Co (NH3)3 Cl3]

    (c)

    [Co (NH3)5Cl] Cl3

    (d)

    [Co (NH3)4 Cl2]Cl3

  13. An example of unidentate ligand is

    (a)

    NH2 - CH2 - CH2 - NH2

    (b)

    C2O2-4

    (c)

    CH3COO-

    (d)

    both (b) and (c)

  14. The isomerism exhibited by the complexes [Co(NH3)6] [Cr(CN)6] and [Cr(NH3)8] [CO(CN)6] is_________

    (a)

    Geometrical

    (b)

    Coordination

    (c)

    linkage

    (d)

    ionisation

  15. Pick out the central metal ion in the complex K3[AI(C2O4)3].

    (a)

    3K+

    (b)

    Al3+

    (c)

    C2O42-

    (d)

    both (a) and (b)

  16. According to IUPAC, No is ______________

    (a)

    nitro

    (b)

    nitrosyl

    (c)

    nitrato

    (d)

    nitrito

  17. ____________is used as an antitumor drug in cancer treatment.

    (a)

    Ca - EDTA

    (b)

    Cis - platin

    (c)

    Sodium thio sulphate

    (d)

    Nickel chloride

  18. Crystal field stabilization energy for high spin d4 octahedral complex is _____________

    (a)

    - 0. 6 \({ \triangle }_{ 0 }\)

    (b)

    - 1. 8 \({ \triangle }_{ 0 }\)

    (c)

    - 1. 6 \({ \triangle }_{ 0 }\)

    (d)

    - 1. 4 \({ \triangle }_{ 0 }\)

  19. The chemical formula for diammine silver (I) chloride is __________

    (a)

    [Ag(NH3)2] Cl

    (b)

    [Ag(NH3)]Cl

    (c)

    [Ag(NH2)2]Cl

    (d)

    [Ag(NH4)2]Cl

  20. The oxidation state of the central metal ion in the complex [Co(H2O)(CN)(en)2]2+ is____________

    (a)

    0

    (b)

    +1

    (c)

    +2

    (d)

    +3

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