A magnetic moment of 1.73 BM will be shown by one among the foll

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 Multiple Choice QuestionsMultiple Choice Questions

171.

Which of the following has longest C-O bond length? (free C-O bond length in CO is 1.128 A0)

  • [Co(CO)4]-

  • [Fe(CO)4]-2

  • [Mn(CO)6]+

  • [Mn(CO)6]+

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172.

Which of the following biphenyls is optically active?

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173.

Which of the following processes does not involve oxidation of iron?

  • Rusting of iron sheets

  • Decolourisation of blue CuSO4 solution by iron

  • Formation of Fe(CO)5 from Fe

  • Formation of Fe(CO)5 from Fe

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174.

Which of these statements about [Co(CN)6]3- is true?

  • [Co(CN)6]3- has no unpaired electrons and will be in a low-spin configuration.

  • [Co(CN)6]3-  has four unpaired electrons and will be in a low-spin configuration

  • [Co(CN)6]3-  has four unpaired electrons and will be in high-spin configuration.

  • [Co(CN)6]3-  has four unpaired electrons and will be in high-spin configuration.

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175.

Cobalt (III) chloride forms several octahedral complexes with ammonia, which of the following will not give a test for chloride ions with silver nitrated at 250 C? 

  • CoCl. 3NH3

  • CoCl. 4NH3

  • CoCl. 5NH3

  • CoCl. 5NH3

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176.

Among the following complexes, the one which shows zero crystal field stabilisation energy (CFSE) is

  • [Mn(H2O)6]3+

  • [Fe(H2O)6]3+

  • [Co(H2O)6]3+

  • [Co(H2O)6]3+

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177.

Which of the following complexes  is used to be as an anticancer  agent ?

  • mer=[Co(NH3)Cl3]

  • cis-[PtCl2(NH3)2]

  • cis-K2[PtCl2Br2]

  • cis-K2[PtCl2Br2]

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178.

Which of the following compounds will undergo racemization when a solution of KOH hydrolysis?

  • (i) and (ii) 

  • (iv)

  • (iii) and (iv)

  • (iii) and (iv)

  • (iii) and (iv)

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179.

A magnetic moment of 1.73 BM will be shown by one among the following

  • [Cu(NH3)4]2+

  • [Ni(CN)4]2-

  • TiCl4

  • TiCl4


A.

[Cu(NH3)4]2+

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180.

Which of the following paramagnetic?

  • CO

  • O2-

  • CN-

  • CN-

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