Solid State Test

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Solid State Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

Non-stoichiometric metal deficiency is observed in the salts of

A
alkaline earth metals only

B
transition metals only

C
all metals

D
alkali metals
Question 2
1 / -0

What is the number of unit cells present in a cube-shaped ideal crystal of NaCl of mass 1.0 g?

A
5.14 × 10²¹

B
1.28 × 10²¹

C
1.71 × 10²¹

D
2.57 × 10²¹
Question 3
1 / -0

Ionic solids containing large differences in sizes of ions show

A
Frenkel defect

B
F - centeirs

C
Interstitials defect

D
Schottky defect

Solution

Smaller atoms can easy occupy interstitial postion showing Frenekel Defect.
Question 4
1 / -0

The crystal system of a compound with unit cell dimensions a = 0.387 nm, b = 0.387 nm, c = 0.504 nm and α = β = 90o,γ = 120^o is

A
cubic

B
hexagonal

C
orthorhombic

D
rhombohedral
Question 5
1 / -0

Which of the following statements is correct?

A
Ferrimagnetic substances possess large magnetic moment.

B
Antiferromagnetic substances possess zero net dipole moment.

C
Group 15 elements, when doped with elements of group 14, produce p-type semiconductors.

D
There is an increase in coordination number of CsCl when pressure is applied.
Question 6
1 / -0

Which is true for F - centers?

A
Density of the substance increases

B
Creates vacancy

C
Imparts colour to the crystal

D
Decreases density of the substance

Solution

The paired electron can get excited and on returning back to ground state it emits light thus imparts color
Question 7
1 / -0

For a metallic crystal having bcc type staking pattern, what percentage of the volume of its lattice is empty?

A
68%

B
32%

C
26%

D
74%
Question 8
1 / -0

Which of the following compounds does not show metal deficiency defects?

A
FeO

B
FeS

C
NiO

D
NaCl
Question 9
1 / -0

Which of the following statements is INCORRECT?

A
The number of carbon atoms in a unit cell of diamond is 4.

B
The number of Bravais lattices in which a crystal can be categorised is 14.

C
The fraction of the total volume occupied by the atom in a primitive cell is 0.48.

D
The total number of atoms in a simple cubic unit cell is 1.
Question 10
1 / -0

Amorphous form of silica is

A
tridymite

B
cristobalite

C
fumed silica

D
asbestos

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Re-Attempt Weekly Quiz Competition

Solid State Test - 3

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Solid State Test - 3

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Question 1

alkaline earth metals only

transition metals only

all metals

alkali metals

Question 2

5.14 × 1021

1.28 × 1021

1.71 × 1021

2.57 × 1021

Question 3

Frenkel defect

F - centeirs

Interstitials defect

Schottky defect

Solution

Question 4

cubic

hexagonal

orthorhombic

rhombohedral

Question 5

Ferrimagnetic substances possess large magnetic moment.

Antiferromagnetic substances possess zero net dipole moment.

Group 15 elements, when doped with elements of group 14, produce p-type semiconductors.

There is an increase in coordination number of CsCl when pressure is applied.

Question 6

Density of the substance increases

Creates vacancy

Imparts colour to the crystal

Decreases density of the substance

Solution

Question 7

68%

32%

26%

74%

Question 8

FeO

FeS

NiO

NaCl

Question 9

The number of carbon atoms in a unit cell of diamond is 4.

The number of Bravais lattices in which a crystal can be categorised is 14.

The fraction of the total volume occupied by the atom in a primitive cell is 0.48.

The total number of atoms in a simple cubic unit cell is 1.

Question 10

tridymite

cristobalite

fumed silica

asbestos

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5.14 × 10²¹

1.28 × 10²¹

1.71 × 10²¹

2.57 × 10²¹