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Physics ECAT Pre Engineering Chapter 17 Physics of Solid Online Test MCQs With Answers
Question # 1
When relatively simple molecules are chemically combined into massive molecules, the reaction is called:
Choose an answer
Fission reaction
Fusion reaction
Polymerization
Any of these
None of these
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Question # 2
The materials in which there are plenty of free electrons for electrical conduction are known as
Choose an answer
conductors
insulators
semi-conductors
all of them
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Question # 3
When the shear stress and shear stain are involved, then their ratio is called
Choose an answer
Young's modulus
Bulk modulus
Shear modulus
all of them
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Question # 4
The substance in which atoms are so oriented that the field produced by spin and orbital motion of the electrons might add up to zero,are called
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diamagnetic substances
ferromagnetic substances
paramagnetic substances
all of them
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Question # 5
If the stress increased beyond the elastic limit of the material. the deformation produced in the material will be
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permanent
temporary
either of them
none of them
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Question # 6
There is a regular arrangement of molecules in a
Choose an answer
amorphous solids
polymeric solids
crystalline solids
none of them
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Question # 7
Within each domain, the magnetic field of all the spinning electrons are
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parallel
antiparallel
perpendicular
all of them
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Question # 8
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 # 9
The magnetism produced by electrons within an atom can arise from
Choose an answer
electrons orbiting the nucleus
electrons posses a spin
both motions
none of these motions
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Question # 10
The band above the valence band is called
Choose an answer
high energy band
conduction band
empty band
none of them
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Question # 11
When a stress changes the shape, it is called the
Choose an answer
compressional stress
tensile stress
shear stress
any one of them
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Question # 12
When a stress changes length, it is called the
Choose an answer
compressional stress
tensile stress
shear stress
any one of them
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Question # 13
The critical temperature of aluminium is
Choose an answer
1.18 K
4.2 K
3.72 K
7.2 K
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Question # 14
when the deformation produced in the material become permanent, this type of behaviour is called
Choose an answer
proportionality
elasticity
plasticity
none of them
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Question # 15
The smallest three dimensional basic structure is called as:
Choose an answer
An atom
Unit cell
Crystal lattice
Polymer
None of these
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