Question # 1

f-block elements are called :

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Alkali metal

Alkakline earth metals

Transition elements

Electron deficient elements

Which of the following is non-typical transition element?

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Cr

Mn

Zn

Fe

Bronze is an alloy of Cu and

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Zn

As

Sb

Sn

Potassium chromate has formula

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KClO₃

K₂CO₃

K₂CrO₄

K₂Cr₂O₇

Group VI-B of transition elements contains:

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Zn, Cd, Hg

Fe ,Ru ,Os

Cr, Mo ,W

Mn, Te, Re

Coordination sphere may be:

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Cationic

Anionic

Neutral

All above

Which of the following metal exhibits more than one oxidation?

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Na

Mg

Fe

Al

The elements in which d or f-orbitals are incomplete are called

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Transition elements

Typical elements

Actinides

lanthanides

Transition metals form complexes due to the participation of partially filled

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f-orbitals

d-orbitals

s-orbitals

p-orbitals

The number of unpaired electrons in Mn²⁺is

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5

4

3

2

[Cu[NH₃)₄]⁺²will form ______ structure

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Square planar

Tetrahedral

Octahedral

Trigonal bipyramidal

Series starting from57La,42Hf -80Hg is in the period:

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4th

5th

6th

7th

Which is the correct electronic configuration of Cr - 24

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1s², 2s², 2p⁶, 3s², 3p⁶, 3d⁴, 4s²

1s², 2s², 2p⁶, 3s², 3p⁶, 3d³, 4s², 4p¹

1s², 2s², 2p⁶, 3s², 3p⁶, 3d⁵, 4s¹

1s², 2s², 2p⁶, 3s², 3p⁶, 3d⁵, 4p¹

[Ti(H₂O)₆]⁺³ion absorbs colour:

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Blue

Yellow

Green

Red

Across the lanthanide series, the basicity of the lanthanide hydroxides

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Increases

Decreases

First increases and then decreases

First decreases and then increases

Stainless steel contains Cr upto

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12%

18%

10%

5%

Which is not a bidentate ligand

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The formula of curprite is

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Cu₂S

Cus

Cu₂O

CuCO₃

Which is used to identify Cu²⁺ions

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Nitric acid

Sulfuric acid

NaOH

HCI

Which of the following is not related to transition metals

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They have a high tensile strength

They are ductile

They are malleable

They have low melting points

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

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Chromium

Copper

Nickel

Manganese

The equivalent weight of KMnO₄(formula weight = M) when it is used as an oxidant in neutral medium is

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M

M/2

M/3

M/5

The total number of rare earth elements is

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8

32

14

10

The colour of transition metal complexes is due to:

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d-d transitions of electorns

Paramagnetic nature of transition

Ionization

Loss of s-electrons

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

f-Block elements are also called

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Non typical transition elements

Outer transition elements

Normal transition elements

Inner transition elements

What is the shape of Fe(CO)₅molecule?

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Tetrahedral

Octahedral

Trigonal bipyramidal

Square pyramidal

Bell metal is an alloy of

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Cu, Zn, and Sn

Cu, Zn and Ni

Cu and Zn

Cu and Sn

The number of unpaired electrons in ferrous ion ( Z - 26) is

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3

2

4

5

The number of unpaired electrons in Fe³⁺(Z = 26) are

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5

6

3

4

Which is in differnet phase form other metals

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Ni

Hg

Cd

Na

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ECAT Chemistry Chapter 17 Transition Elements Online Test MCQs With Answers

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