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Chapter 17 - Physics of Solids - 5
1.
Glass is treated as solid liquid because:
a) Hard and has arranged molecules
b) Transparent
c) Molecules are irregularly arranged
d) It is beautiful and hard
2.
Solids with high value of conductivity are called:
a) Conductors
b) Non-metal
c) Insulator
d) Semi conductor
3.
Conductivity of insulator is of the order of:
a) 107 (Ω-m-1)
b) 10-10 to 10-20(Ω-m-1)
c) 10-6 to 10-4(Ω-m-1)
d) Infinite
4.
The conduction band lies:
a) Above the valence band
b) Below valence band
c) May be anywhere
d) Inside the valence band
5.
A conduction band is always:
a) Empty
b) Completely filled
c) Partially filled
d) Partially empty
6.
A dropped semi conductor is called:
a) N type
b) Extrinsic
c) P type
d) Instrinsic
7.
A pure semi conductor is called:
a) P type
b) Intrinsic
c) N type
d) Extrinsic
8.
A trivalent impurity is usually called:
a) Donar
b) Rectifier
c) Acceptor
d) transistor
9.
In amorphous solids there is no regular arrangement of molecules
a) Acceptor
b) Is called shear modules
c) Like those in crystalline solid
d) To its original shape is called elasticily
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