Mashaal Masha
Mashaal Masha
 Oct 16, 2022
0

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Choose the correct options for the following questions.
Crystalline solids are in the form of:
Difficulty: Easy
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A:
Metals
B:
Ionic compounds
C:
Ceramics
D:
All
The solids are classified as:
Difficulty: Easy
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A:
Metals
B:
Crystalline
C:
Amorphous
D:
All except A

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Zirconia is classified as:
Difficulty: Easy
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A:
Ceramic solid
B:
Ionic compound
C:
Metal
D:
Either a or b
Each atom in a metal crystal vibrates about a fixed point with an amplitude that:
Difficulty: Easy
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A:
Decreases with rise in temperature
B:
Is not affected by rise in temperature
C:
Increases with rise in temperature
D:
Both b and c
The transition from solid to liquid is actually from:
Difficulty: Easy
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A:
Order to disorder
B:
Disorder to order
C:
Order to order
D:
Disorder to disorder

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The transition from solid state to liquid state is:
Difficulty: Easy
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A:
Abrupt
B:
Slow
C:
Discontinuous
D:
Both a and c
The force which maintains the strict long range order between atoms of a cylinder solid is the:
Difficulty: Easy
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A:
Nuclear force
B:
Cohesive force
C:
Adhesive force
D:
Coulomb force
The word amorphoud means:
Difficulty: Easy
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A:
Without any structure
B:
With define structure
C:
Regular arrangement of molecules
D:
Both b and c

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Amorphoud solids:
Difficulty: Easy
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A:
Have definite melting point
B:
Are called glassy solids
C:
Have no definite melting point
D:
Both b and c
An ordinary glass gradually softens into a paste-like state before it becomes a very viscous liquid. It happens alomst a:
Difficulty: Easy
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A:
$800^{\circ}C$
B:
$500^{\circ}C$
C:
$300^{\circ}C$
D:
$1000^{\circ}C$

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