Question # 1

5-d series is in the period :

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4th

5th

6th

7th

The colour of transition metal complexes is due to

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d-d transitions of electrons

Para magnetic nature of transition elements

Ionization

Loss of s-electrons

Which of the following is a typical transition metal?

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Sc

Y

Ra

Co

[Ti(H₂O)₆]⁺³ion absorbs colour:

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Blue

Yellow

Green

Red

Oxalic acid oxidizes to:

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CO

CO₂

Oxalates

None of these

The colour of a transition metal complex is due to d-d transition The colour of the complex is the complementary of the colour absorbed. Thus [Ti(H₂O₆]³⁺abosrbs yellow light and transmits blue and red colours therefore the solution of titanium complex appears

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Blue

Red

Yellow

Mixture of blue and red or violet

Bell metal is an alloy of

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Cu, Zn, and Sn

Cu, Zn and Ni

Cu and Zn

Cu and Sn

Which of the following is a non-typical transition elements

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Cr

Mn

Zn

Fe

Among the lanthandes the one obtained by synthetic method is

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Lu

Pm

Pr

Gd

Coordination number of Pt in [Pt Cl(NO₂) (NH₃)]^2-is

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2-

4

1

6

Transition elements form which type of bond

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Ionic bonds only

Covalent bonds only

Ionic and covalent bonds

Polar bonds

The free spaces between the metal atoms and its crystal lattice are called

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Valance spaces

Empty spaces

Interstices

None

The total number of d-bock transition element is

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10

14

40

30

Transition elements differ from s and p block elements due to their characteristic properties. What is not he characteristic property of transition elements

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Transition elements show variable oxidation states

Their salts are coloured

They can be used as catalyst

All of them are metals

The colour of the transition metal compounds is due to

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p-d transition

d-d transition

s-p transition

None of these

Titanium is used as a catalyst in

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Hydrogenation

Dehydrogenation

Polymerization of P.E.

Oxidation of ammonia

Cu²⁺with d⁹electronic configuration appears

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Yellow

Pink

Blue

Green

Besides Zn and Cu , German silver contains the metal

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Sn

Ag

Ni

Mg

Stainless steel contains ion and carbon along with

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Ni and Cr

Cr and Co

Co and Mn

Mn and Ni

How many mole of acidfied FeSO₄solution can be completely oxidized by one mole of KMNO₄?

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10

5

6

2

What is wrong about transition metals?

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Diamagnetic

Paramagnetic

Form complexes

Shows variable oxidation state

Which of the following d-block elements can show the highest oxidation number in its compounds

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Chromium

Copper

Nickel

Manganese

Bell metal is an alloy of Sn and

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Copper

Iron

Zinc

Magnesium

Which of the following transition metal ions will have definite value of magnetic moment?

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Se³⁺

Ti³⁺

Cu⁺

Zn²⁺

Which element does not belong to 4d series

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Y

Zr

Mo

Zn

Mercury is the only metal which is liquid at 0°C. this is due to its

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Very high ionization energy and weak metallic bond

Low ionization potential

High atomic weight

High vapour pressure

Which of the following metal exhibits more than one oxidation?

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Na

Mg

Fe

Al

Transition metals form complexes due to the participation of partially filled

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f-orbitals

d-orbitals

s-orbitals

p-orbitals

Which of the following is a not typical transition element

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Cr

Mn

Zn

Fe

d-block elements are also called :

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alkali metal

Alkaline earth metals

Transition elements

Electron deficient elements

Maximum variable oxidation state is of:

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Mn⁺²

Fe⁺³

Cr⁺¹

a and b

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