Important Questions of The d-And-f-Block Elements Chemistry | Zigya

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51.

Identify the statement which is not correct regarding CuSO4

  • It react with KI to give iodine

  • It react with KCl to give Cu2Cl2

  • It react with NaOH and glucose to give Cu2O.

  • It gives CuO on strongly heating in air.


52.

Transition metals usually exhibit highest oxidation states in their

  • chlorides

  • fluorides

  • bromides

  • iodides


53.

Which one of the following sets correctly represents the increase in the paramagnetic property of the ions?

  • Cu2+ > V 2+ > Cr2+ > Mn2+

  • Cu2+ < Cr2+  < V 2+ < Mn2+

  • Cu2+ < V 2+ < Cr2+ < Mn2+

  • V 2+ < Cu2+  < Cr2+ < Mn2+


54.

Which of the following is not a characteristic of transition elements?

  • Variable oxidation states

  • Formation of coloured compounds

  • Formation of interstitial compounds

  • Natural radioactivity


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55.

The magnetic moment of a salt containing Zn2+ ion is

  • 0

  • 1.87

  • 5.92

  • 2


56.

Which of the following complex has zero magnetic moment (spin only)?

  • [Ni(NH3)6]Cl2

  • Na3[FeF6]

  • [Cr(H2O)6]SO4

  • K4[Fe(CN)6]


57.

Among the following the compound that is both paramagnetic and coloured is :

  • K2Cr2O7

  • (NH4)2(TiCl6)

  • VOSO4

  • K3[Cu(CN)4]


58.

Which of the following is diamagnetic in nature ?

  • [Fe(CN)6]3-

  • NiCl42-

  • [Ni(CO)4]

  • [MnCl4]2-


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59.

Which of the following is an amphoteric oxide?

  • SO3

  • Mg

  • Al2O3

  • P4O10


60.

The point of dissimilarity between lanthanides and actinides is

  • three outermost shells are partially filled

  • they show oxidation state of + 3 (common)

  • they are called inner transition elements

  • they are radioactive in nature


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