d-Block and f-Block Elements Test

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d-Block and f-Block Elements Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following pairs of elements exhibits the stable configuration of half-filled 4f-orbitals?

A
Yb and Lu

B
Eu and Gd

C
La and Eu

D
Gd and Yb
Question 2
1 / -0

The following question has four choices, out of which ONLY ONE is correct.

Which of the following compounds is coloured?

A
ZnSO₄

B
TiO₂

C
CrCl₃

D
ScCl₃
Question 3
1 / -0

Which of the following statements is incorrect?

A
All the elements of the lanthanide series resemble each other very closely.

B
4f and 5f orbitals are equally shielded.

C
d-block elements show irregular and erratic chemical properties among themselves.

D
Lanthanides are also called rare earth elements.
Question 4
1 / -0

The species with the largest and smallest radii among the 3d series are respectively

A
Sc and Co

B
Sc and Zn

C
Cr and Mn

D
Zn and Sc
Question 5
1 / -0

Equivalent weight of KMnO₄ in acidic medium is

A
58 g

B
31.6 g

C
52.8 g

D
158 g
Question 6
1 / -0

Cu⁺ ion is not stable in aqueous solutions and it invariably exists as Cu²⁺ in them because

A
second ionisation energy of Cu is lower than the first

B
hydration energy of Cu¹⁺ is higher

C
hydration energy of Cu²⁺ is higher

D
second ionisation energy of Cu is higher
Question 7
1 / -0

To which of the following categories will the given reaction belong?

2Cu⁺ → Cu + Cu²⁺

A
Oxidation

B
Displacement

C
Reduction

D
Disproportionation
Question 8
1 / -0

Which of the following pairs represents good reducing and oxidising agents, respectively?

A
La³⁺ and Eu²⁺

B
Tb⁴⁺ and Eu²⁺

C
Yb³⁺ and Eu²⁺

D
Yb²⁺ and Eu²⁺
Question 9
1 / -0

The inner transition metals of 5f series is known as

A
Actinoids

B
Zirconium

C
Lanthanoids

D
None of these

Solution

Inner transition metals of 5f series is known as Actinoids.
Question 10
1 / -0

For Cr, the states +2, +3 +4 and +1 are well known, but the most stable state(s) amongst these is/are

A
+2

B
+3

C
+4

D
+1

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d-Block and f-Block Elements Test - 2

Result

d-Block and f-Block Elements Test - 2

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Question 1

Yb and Lu

Eu and Gd

La and Eu

Gd and Yb

Question 2

ZnSO4

TiO2

CrCl3

ScCl3

Question 3

All the elements of the lanthanide series resemble each other very closely.

4f and 5f orbitals are equally shielded.

d-block elements show irregular and erratic chemical properties among themselves.

Lanthanides are also called rare earth elements.

Question 4

Sc and Co

Sc and Zn

Cr and Mn

Zn and Sc

Question 5

58 g

31.6 g

52.8 g

158 g

Question 6

second ionisation energy of Cu is lower than the first

hydration energy of Cu1+ is higher

hydration energy of Cu2+ is higher

second ionisation energy of Cu is higher

Question 7

Oxidation

Displacement

Reduction

Disproportionation

Question 8

La3+ and Eu2+

Tb4+ and Eu2+

Yb3+ and Eu2+

Yb2+ and Eu2+

Question 9

Actinoids

Zirconium

Lanthanoids

None of these

Solution

Question 10

+2

+3

+4

+1

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ZnSO₄

TiO₂

CrCl₃

ScCl₃

hydration energy of Cu¹⁺ is higher

hydration energy of Cu²⁺ is higher

La³⁺ and Eu²⁺

Tb⁴⁺ and Eu²⁺

Yb³⁺ and Eu²⁺

Yb²⁺ and Eu²⁺