MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Materials Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Transition metal oxides are highly defective. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Transition metal oxides are highly defective? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Which of the following does point defect does not depend on? |
| A. | Density |
| B. | Melting point |
| C. | Hardness |
| D. | Optical absorb |
| Answer» D. Optical absorb | |
| 4. |
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 |
| Answer» C. Extrinsic defect | |
| 5. |
In which of the following the concentration of defect is constant? |
| A. | Point defect |
| B. | Intrinsic defect |
| C. | Extrinsic defect |
| D. | Linear defect |
| Answer» D. Linear defect | |
| 6. |
In which of the following iron compounds, the compound is non-stoichiometric? |
| A. | Fe<sup>2+</sup> and Fe<sup>3+</sup> |
| B. | Fe<sup>2+</sup> ion only |
| C. | Fe<sup>3+</sup> ion only |
| D. | It doesn’t depend on the iron ions |
| Answer» B. Fe<sup>2+</sup> ion only | |
| 7. |
Frenkel defects change the ratio of cation to anions. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Schottky and Frenkel defects are __________ |
| A. | interstitial and vacancy defects respectively |
| B. | vacancy and interstitial defect respectively |
| C. | interstitial defects |
| D. | vacancy defects |
| Answer» C. interstitial defects | |
| 9. |
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 |
| Answer» B. Frenkel defect | |