Question # 1

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

f - block elements are also called.

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Non typical transition elements

Outer transition elements

Inner transition elements

None of true

Which complex shows zero oxidation state of the transition metal.

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[Fe(CO)5]

K3[Fe(CN)6]

K2[Fe(CN)6]

[Cu(NH3)4]SO4

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

Colour of K2Cr2O7 is

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Red

Orange

Green

Yellow

Which of the following is non-typical transition element

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Cr

Mn

Zn

Fel

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

Which is not an ore of iron

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haematite

Magnetite

limonite

Cassiterite

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

The chemical composition of pyrolusite is.

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KMnO4

K2MnO4

MnO2

MnO

Group VI B to transition elements contains

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Zn, Cd, Hg

Fe, Ru, OS

Cr, MO, W

Mn, Te, Re

Which of the following is non-typical transition metal

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Fe

Mn

Zn

Ni

The conversion of potassium magnate to potassium permanganate by passing Cl2 Through aqueous solution of K2MnO4 is called.

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Contact process

Open hearth process

Stadeler's process

Thermite process

Total number of d-block elements are

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10

20

30

40

f-block elements are also called

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non typical transition elements

outer transition elements

normal transition elements

inner transition elements

Typical transition element is

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Sc

CO

Ra

Y

Which of the following is a non typical transition element.

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Cr

Mn

Zn

Fe

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