Entry Test MCQ :: Physics Of Solids
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21. |
Coercive force is the force which opposes |
A. |
Demagnetization |
B. |
Breakage |
C. |
Extension |
D. |
Surface cracking |
Answer: Option A
Explanation:
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22. |
Materials in which valence electrons are tightly bound to their atoms at low temperature are called |
A. |
Semi conductor |
B. |
Super conductors |
C. |
Insulators |
D. |
Conductor |
Answer: Option C
Explanation:
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23. |
The bulk properties of materials such as their mode of fracture can be related to their |
A. |
Polymerization |
B. |
Cleavage |
C. |
Microstructure |
D. |
Dislocation |
Answer: Option C
Explanation:
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24. |
The angular position of cells remains the same for a sample of a crystal. This property is called |
A. |
Isotropy |
B. |
Cleavage |
C. |
Homogeneity |
D. |
The external symmetry of form |
Answer: Option D
Explanation:
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25. |
The breaking of crystals along definite direction is called |
A. |
Cleavage |
B. |
Symmetry |
C. |
Isotropy |
D. |
Homogeneity |
Answer: Option A
Explanation:
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26. |
If the density of atoms remain same along any direction in a crystal is called |
A. |
Symmetry |
B. |
Homogeneity |
C. |
Isotropy |
D. |
Cleavage |
Answer: Option B
Explanation:
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27. |
In simple cube one atom or molecule lies at its |
A. |
Force corners |
B. |
Nine corners |
C. |
Eight corners |
D. |
Six corners |
Answer: Option C
Explanation:
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28. |
The band theory of solids explains satisfactorily the nature of |
A. |
Electrical insulators alone |
B. |
Electrical conductors alone |
C. |
Electrical semi conductors alone |
D. |
All of the above |
Answer: Option D
Explanation:
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29. |
A vacant or partially filled band is called |
A. |
Conduction band |
B. |
Valence band |
C. |
Forbidden band |
D. |
Empty band |
Answer: Option A
Explanation:
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30. |
A completely filled band is called |
A. |
Conduction band |
B. |
Valence band |
C. |
Forbidden band |
D. |
Core band |
Answer: Option D
Explanation:
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