Question # 1

Colour of K2Cr2O7 is

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Red

Orange

Green

Yellow

The colour of transition metal complexes

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d-d transitions of electrons

paramagnetic nature of transition elements

ionization

loss of s-electron

In IUPAC system, the name of K4[Fe(CN)6] is

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Potassium ferricynaide

Potassium ferrocynide

Potassium Hexacyanoferrate (II)

Poatssium hexacaynoferrate (III)

Which one of the following elements commonly exhibits oxidation states of +6 and +3 in aqueous solution.

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Na

Cr

Mg

C

Which of the following is non-typical transition element

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Cr

Mn

Zn

Fel

Which one of the following elements shows variable valency, can act as a catalyst and form coloured compounds.

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Carbon

Chlorine

Sulpur

Iron

The variation pattern in ionic radii of first transition series shows

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A regular increase

A regulars decrease

No regular pattern

A regular decrease and than alight increase

The colour of transition metal complexes is due to

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d-d transition of electrons

Paramagnetic nature of transition elements

Ionization

Loss of s -electrons

The chemical composition of pyrolusite is.

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KMnO4

K2MnO4

MnO2

MnO

f - block elements are also called.

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Non typical transition elements

Outer transition elements

Inner transition elements

None of true

The total number of transition element is

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10

14

40

58

Which element shows highest oxidation state among these

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Zn

Fe

Mn

Sc

Group VI B of transition elements contains.

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Zn, Cd, Hg

Fe, Ru,Os

Cr, Mo, W

Mn, Te, Re

In [Co(NH3)6]+3 the coordination number of cobalt is.

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Zero

Two

Four

Six

d -block elements which show anomalous configuration in first series are

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Cr and Ni

Cr and Cu

Cu and CO

Fe and Ni

Geometrical shape of [CO(NH3)6Cl3

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linear

square planar

Octahedral

Trigonal hypyramid

Which form interstitial compounds.

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Fe

Ni

CO

All of those

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