Solid State Test

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Solid State Test - 19

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Weekly Quiz Competition

Question 1
4 / -1

The structure drawn below is for

A
Fluorite

B
Cesium chloride

C
Wurtzite

D
Zinc blende
Question 2
4 / -1

Example of a non- stoichiometric compound is :

A
FeS

B
CaF₂

C
Fe_0.9S

D
ZnS
Question 3
4 / -1

Bragg’s law is given by equation

A
nλ = 2θ sinθ

B
nλ = 2d sinθ

C
2nλ = d sinθ

D
nλ = 1/2 dsinθ
Question 4
4 / -1

Which of the following is an orthosilicate ?

A
Se₂ (Si₂O₇)

B
Mg₂SiO₄

C
Na₂SiO₃

D
MgSiO₃
Question 5
4 / -1

Schottky defect in crystals is observed when

A
unequal number of cations and anions are missing from the lattice

B
equal number of cations and anions are missing from the lattice

C
an ion leaves its normal site and occupies an interstitial site

D
density of the crystal is increased
Question 6
4 / -1

In the Schottky defect

A
cations are missing from the lattice sites and occupy the interstitial sites

B
equal number of cations and anions are missing

C
anions are missing and electrons are present in their place

D
equal number of extra cations and electrons are present in the interstitial sites.
Question 7
4 / -1

Schottky defect is likely to be found in :

A
Agl

B
NaCl

C
ZnS

D
ZnO
Question 8
4 / -1

Of the following crystal lattices, the one that has the largest packing fraction is

A
Body centred cubic

B
Simple cubic

C
Simple tetragonal

D
Face centred cubic
Question 9
4 / -1

For the various types of interactions, the correct order of increasing strength is

A
Covalent < hydrogen bonding < van der Waals < dipole –dipole

B
van der Waals < hydrogen bonding < dipole-dipole < covalent

C
van der Waals < dipole – dipole < hydrogen boding < covalent

D
dipole – dipole < van der Waals < hydrogen bonding < covalent
Question 10
4 / -1

Point out the correct statement

A

B
Interfacial angles in crystals are measured by goniometer

C
Schottky defect is a stoichiometric defect

D
All the above

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Solid State Test - 19

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Solid State Test - 19

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Question 1

Fluorite

Cesium chloride

Wurtzite

Zinc blende

Question 2

FeS

CaF2

Fe0.9S

ZnS

Question 3

nλ = 2θ sinθ

nλ = 2d sinθ

2nλ = d sinθ

nλ = 1/2 dsinθ

Question 4

Se2 (Si2O7)

Mg2SiO4

Na2SiO3

MgSiO3

Question 5

unequal number of cations and anions are missing from the lattice

equal number of cations and anions are missing from the lattice

an ion leaves its normal site and occupies an interstitial site

density of the crystal is increased

Question 6

cations are missing from the lattice sites and occupy the interstitial sites

equal number of cations and anions are missing

anions are missing and electrons are present in their place

equal number of extra cations and electrons are present in the interstitial sites.

Question 7

Agl

NaCl

ZnS

ZnO

Question 8

Body centred cubic

Simple cubic

Simple tetragonal

Face centred cubic

Question 9

Covalent < hydrogen bonding < van der Waals < dipole –dipole

van der Waals < hydrogen bonding < dipole-dipole < covalent

van der Waals < dipole – dipole < hydrogen boding < covalent

dipole – dipole < van der Waals < hydrogen bonding < covalent

Question 10

Interfacial angles in crystals are measured by goniometer

Schottky defect is a stoichiometric defect

All the above

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CaF₂

Fe_0.9S

Se₂ (Si₂O₇)

Mg₂SiO₄

Na₂SiO₃

MgSiO₃