Solid State MCQs | Question – Paper 7


Topic: Solid State, Test No.: 07, Total MCQs: 10

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Question 1
To get n-type doped semiconductor, the impurity to be added to silicon should have the following number of valence electrons?
A
1
B
2
C
3
D
5
Question 2
Density of a crystal remains unchanged as a result of
A
Vacancy defect
B
Interstitial defect
C
Frankel defect
D
Schottky defect
Question 3
What is the coordination number of body centred cube?
A
4
B
6
C
8
D
12
Question 4
What is the co-ordination number of sodium in Na2O?
A
8
B
6
C
4
D
2
Question 5
Which is not the correct statement for ionic solids in which positive and negative ions are held by strong electrostatic attractive forces?
A
The radius ratio increases as coordination number increases
B
As the difference in size of ions increases coordination number increases
C
When coordination number is eight, the radius ratio lies between 0.225 to 0.414
D
In ionic solid of the type AX (ZnS, Wurtzite) the coordination number of Zn2+ and S2– respectively are 4 and 4
Question 6
Which of the following statements about amorphous solids is incorrect?
A
They melt over a range of temperature.
B
They are rigid and incompressible.
C
There is no orderly arrangement of particles.
D
They are anisotropic.
Question 7
Which one of the following compound exhibits both Schottky and Frenkel defects?
A
NaCl
B
AgCl
C
AgBr
D
AgI
Question 8
Which one of the following defects in the crystals lowers its density?
A
F-centres
B
Schottky defect
C
Frenkel defect
D
Interstitial defect
Question 9
Which one of the following is a covalent crystal?
A
Dry ice
B
Rock salt
C
Ice
D
Quartz
Question 10
The ability of a given substance to assume two or more crystalline structure is called
A
polymorphism
B
isomorphism
C
amorphous
D
isomerism
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