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Online Tests
ECAT Physics Chapter 17 Physics of Solids Online Test MCQs With Answers
Question # 1
Glass and high carbon steel are the examples of
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brittle substances
ductile substances
plastic substances
elastic substances
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Question # 2
Amorphous solids are also more like
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crystalline solids
gases
liquids
any one of them
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Question # 3
The substances which break just after the elastic limit is reached, are known as
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brittle substances
ductile substances
plastic substances
elastic substances
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Question # 4
Every crystalline solid has
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definite melting point
different melting points
may or may not be definite
none of them
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Question # 5
In a soft iron, domains are
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easily oriented along external field and do not return to original random positions
easily oriented along external field and readily returns to originally random position
do no oriented along external field and also do not returns to originally random position
none of them
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Question # 6
Polymers are the chemical combination of carbon with:
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Nitrogen
Oxygen
Hydrogen
All of these
None of these
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Question # 7
Tick the one which is not a crystalline solid:
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Zirconia
Glass
Copper
Ceramic solid
An ionic compound
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Question # 8
When small number of atoms from some other suitable element is added to the semi-conductor material, then this process is known as
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impurification
adding
doping
extrinsivity
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Question # 9
The substances in which, atom are so oriented that their fields support each other and the atoms behave like tiny magnets, are called
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diamagnetic substances
ferromagnetic substances
paramagnetic substances
all of them
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Question # 10
The substance in which atoms cooperate with each other in such a way so as to exhibit a strong magnetic effect, are called
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diamagnetic substances
ferromagnetic substances
paramagnetic substances
all of them
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Question # 11
In crystalline solids, atoms are held about their equilibrium positions depending upon the strength of:
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Adhesive force
Nuclear forces
Inter atomic cohesive force
Electromagnetic force
None of these
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Question # 12
Synthetic materials fall into the category of
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crystalline solids
amorphous
polymeric solids
all of them
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Question # 13
An ordinary glass gradually softens into a 'paste -like' state before it becomes a very viscous liquid. It happens almost at:
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800
o
C
500
o
C
300
o
C
100
o
C
None of these
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Question # 14
The number of different crystals systems based on the geometrical arrangement of their atoms and the resultant geometrical structure are
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5
7
9
14
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Question # 15
Lead, copper and wrought iron are examples of
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brittle substances
ductile substances
plastic substances
elastic substances
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Question # 16
Recent studies of ferromagnetism have shown that there exists in ferromagnetic substances small regions called
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tiny regions
domains
vectors
none of them
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