Aluminium reacts with NaOH and forms compound 'X'. If the coordin

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 Multiple Choice QuestionsMultiple Choice Questions

61.

In which of the following octahedral complexes of Co (At. no. 27), will the magnitude of  be the highest?

  • [Co(CN)6]3-

  • [Co(C2O4)3]3-

  • [Co(H2O)6]3+

  • [Co(NH3)6]3+


62.

The IUPAC name for the complex [Co(NO2)(NH3)5]Cl, is

  • nitrito-N-pentammine cobalt (III) chloride

  • nitrito-N-pentammine cobalt (II) chloride

  • pentaminenitrito-N-cobalt (II) chloride

  • pentaminenitrito-N-cobalt (III) chloride


63.

[Co(NH3)4Cl2]NO2 and [Co(NH3)4ClNO2]Cl exhibit whcih type of isomerism?

  • Geometrical

  • Optical

  • Linkage

  • Ionisation


64.
  1. Which of the following compounds is not coloured?
  • Na2[Cu(Cl)4]

  • Na[Cd(Cl)4]

  • K4[Fe(CN)6]

  • K3[Fe(CN)6]


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65.

Coordination number of Ni in [Ni(C2O4)3]4- is

  • 3

  • 6

  • 4

  • 5


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66.

Aluminium reacts with NaOH and forms compound 'X'. If the coordination number of aluminium in 'X' is 6, the correct formula of X is

  • [Al(H2O)4(OH)2]+

  • [Al(H2O)3(OH)3]

  • [Al(H2O)2(OH)4]-

  • [Al(H2O)6](OH)3


C.

[Al(H2O)2(OH)4]-

2Al + 2NaOH + 2H2O  2NaAlO2 sodium meta aluminate + 3H2

Sodiummetaaluminate, thus formed, is soluble in water and changes into the complex [Al(H2O)2(OH)4]- in which coordination number of Al is 6.


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67.

The IUPAC name of the given compound [Co(NH3)5Cl]Cl2 is

  • penta amino cobalt chloride chlorate

  • cobalt penta ammine chloro chloride

  • pentamine chloro cobalt (III) chloride

  • penta amino cobalt (III) chlorate


68.

When SCN- is added to an aqueous solution containing Fe(NO3)3, the complex ion produced is

  • [Fe(OH2)2(SCN)]2+

  • [Fe(OH2)5(SCN)]2+

  • [Fe(OH2)8(SCN)]2+

  • [Fe(OH2)(SCN)]6+


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69.

The number of unpaired electrons calculated in [Co(NH3)6]3+ and [CoF6]3- are

  • 4 and 4

  • 0 and 2

  • 2 and 4

  • 0 and 4


70.

Which of the following is hexadentate ligand?

  • Ethylene diamine

  • Ethylene diamine tetra acetic acid

  • 1, 10-phenanthroline

  • Acetyl acetonato


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