MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Materials Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
At what temperature does eutectoid reaction occur? |
| A. | 418oC |
| B. | 666oC |
| C. | 723oC |
| D. | 928oC |
| Answer» D. 928oC | |
| 2. |
How much austenite does eutectic reaction form? |
| A. | 4.3% |
| B. | 6.67% |
| C. | 11.28% |
| D. | 17.89% |
| Answer» B. 6.67% | |
| 3. |
Peritectic reactions are applicable for carbon contents up to _________ |
| A. | 0.1% |
| B. | 0.26% |
| C. | 0.55% |
| D. | 0.96% |
| Answer» D. 0.96% | |
| 4. |
What is the solubility of α ferrite at 0oC? |
| A. | 0.1% |
| B. | 0.02% |
| C. | 0.005% |
| D. | 0.0004% |
| Answer» D. 0.0004% | |
| 5. |
At what temperature does δ ferrite melt? |
| A. | 1674 F |
| B. | 1990 F |
| C. | 2541 F |
| D. | 2800 F |
| Answer» E. | |
| 6. |
The eutectic point in the iron-iron carbide phase diagram occurs at __________ weight % composition of carbon. |
| A. | 0.022 |
| B. | 0.77 |
| C. | 2.11 |
| D. | 4.30 |
| Answer» E. | |
| 7. |
HOW_MUCH_AUSTENITE_DOES_EUTECTIC_REACTION_FORM??$ |
| A. | 4.3% |
| B. | 6.67% |
| C. | 11.28% |
| D. | 17.89% |
| Answer» B. 6.67% | |
| 8. |
At_what_temperature_does_eutectoid_reaction_occur?$ |
| A. | 418<sup>o</sup>C |
| B. | 666<sup>o</sup>C |
| C. | 723<sup>o</sup>C |
| D. | 928<sup>o</sup>C |
| Answer» D. 928<sup>o</sup>C | |
| 9. |
Peritectic reactions are applicable for carbon contents up to ________? |
| A. | 0.1% |
| B. | 0.26% |
| C. | 0.55% |
| D. | 0.96% |
| Answer» D. 0.96% | |
| 10. |
At what temperature does peritectic reaction occur? |
| A. | 1778<sup>o</sup>C |
| B. | 1495<sup>o</sup>C |
| C. | 1148<sup>o</sup>C |
| D. | 723<sup>o</sup>C |
| Answer» C. 1148<sup>o</sup>C | |
| 11. |
What is the maximum solubility of carbon in austenite at 1148oC? |
| A. | 0.09% |
| B. | 0.8% |
| C. | 2.08% |
| D. | 14.35% |
| Answer» D. 14.35% | |
| 12. |
How much iron does cementite contain? |
| A. | 6.67% |
| B. | 24.23% |
| C. | 73.4% |
| D. | 93.3% |
| Answer» E. | |
| 13. |
What is the crystal structure of austenite upon heating? |
| A. | Body-centered cubic |
| B. | Face-centered cubic |
| C. | Hexagonal closely packed |
| D. | Body-centered tetrahedral |
| Answer» C. Hexagonal closely packed | |
| 14. |
What is the solubility of α ferrite at 0oC?$ |
| A. | 0.1% |
| B. | 0.02% |
| C. | 0.005% |
| D. | 0.0004% |
| Answer» D. 0.0004% | |
| 15. |
At what temperature does δ ferrite melt?$ |
| A. | 1674 F |
| B. | 1990 F |
| C. | 2541 F |
| D. | 2800 F |
| Answer» E. | |