Multiple Choice Questions

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Consider the hydrated ions of Ti2+,v2+, Ti3+ and Sc3+ The correct order of their spin only magnetic moments is :

  • Ti3+ < Ti2+< Sc3+< V2+

  • Vi2+ <Ti2+< Ti3+ < Sc3+

  • Sc3+< Ti3+< Ti2+<V2+

  • Sc3+< Ti3+< V2+< Ti2+


C.

Sc3+< Ti3+< Ti2+<V2+

Sc3+, 3d0 Ti2+, 3d2 Ti3+, 3d1 V2+, 3d3


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The correct order of the first ionization enthalpies is :

  • Ti < Mn < Ni < Zn

  • Mn < Ti < Zn < Ni

  • Ti < Mn < Zn < Ni

  • Zn < Ni < Mn < Ti


When copper is heated with conc. HNO3 it produces

  • Cu(NO3)2 and NO

  • Cu(NO3)2, NO and NO2

  • Cu(NO3)2 and N2O

  • Cu(NO3)2 and N2O

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Which of the following material is known as lunar caustic?

  • AgCl

  • AgNO3

  • NaOH

  • NaNO3


The IUPAC symbol for the element with atomic number 119 would be:

  • uun

  • uue

  • uuh

  • une


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The maximum number of possible oxidation states of actinoides are shown by-

  • Neptunium (Np) and plutonium (Pu)

  • Nobelium (No) and lawrencium (Lr)

  • Berkelium (Bk) and californium (Cf)

  • Actinium (Ac) and throrium (Th)


The highest possible oxidation states of uranium plutonium , respectively are

  • 6 and 7

  • 7 and 6

  • 4 and 6

  • 6 and 4


The maximum possible denticities of a ligand given below towards a common transition and inner-transition metal ion, respectively, are :

  • 8 and 8

  • 6 and 8

  • 8 and 6

  • 6 and 6


Three complex [CoCl(NH3)5]2+ (I)[Co(NH3)5H2O]3+(II) and [Co(NH3)6]3+(III) absorb light in the visible region . the correct order of the wavelength of light absorbed by them is :

  • II > I > III

  • III > I > II

  • I> II> III

  • III> II> I


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The lanthanide ion that would show colour is :

  • Lu3+

  • Sm3+

  • La3+

  • Gd3+


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