Imperfection in Ceramics MCQ’s

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This set of Materials Science Multiple Choice Questions & Answers (MCQs) focuses on “Imperfection in Ceramics”.

1. Schottky and Frenkel defects are __________
a) interstitial and vacancy defects respectively
b) vacancy and interstitial defect respectively
c) interstitial defects
d) vacancy defects

2. Frenkel defects change the ratio of cation to anions.
a) True
b) False

3. In which of the following defect the density of the crystal is affected?
a) Schottky defect
b) Frenkel defect
c) Stone-Wales defect
d) Antisite defect

4. In which of the following iron compounds, the compound is non-stoichiometric?
a) Fe2+ and Fe3+
b) Fe2+ ion only
c) Fe3+ ion only
d) It doesn’t depend on the iron ions

5. In which of the following the concentration of defect increases with temperature increase?
a) Point defect
b) Intrinsic defect
c) Extrinsic defect
d) Linear defect

6. Transition metal oxides are highly defective.
a) True
b) False

7. In which of the following the concentration of defect is constant?
a) Point defect
b) Intrinsic defect
c) Extrinsic defect
d) Linear defect

8. Which of the following does point defect does not depend on?
a) Density
b) Melting point
c) Hardness
d) Optical absorb

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