MCQOPTIONS
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MCQOPTIONS
This section includes 12 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. |
Which of the following is not the structural characteristic of a polycrystalline specimen? |
| A. | Shape |
| B. | Average size |
| C. | Reactivity |
| D. | DiameterView answer |
| Answer» D. DiameterView answer | |
| 2. |
What is the full form of ASTM? |
| A. | American society for testing and materials |
| B. | African society for testing and materials |
| C. | American society for torque and momentum forces |
| D. | American society for tensile motion forcesView answer |
| Answer» B. African society for testing and materials | |
| 3. |
WHAT_IS_THE_FULL_FORM_OF_ASTM??$ |
| A. | American society for testing and materials |
| B. | African society for testing and materials |
| C. | American society for torque and momentum forces |
| D. | American society for tensile motion forces |
| Answer» B. African society for testing and materials | |
| 4. |
Which_of_the_following_is_not_the_structural_characteristic_of_a_polycrystalline_specimen?$ |
| A. | Shape |
| B. | Average size |
| C. | Reactivity |
| D. | Diameter |
| Answer» D. Diameter | |
| 5. |
What is the range of grain size number in case of ASTM? |
| A. | 1 to 10 |
| B. | 1 to 100 |
| C. | 1 to 1000 |
| D. | 1 to 10000 |
| Answer» B. 1 to 100 | |
| 6. |
Which of the following method is commonly used to determine grain size? |
| A. | Precipitation |
| B. | Standard comparison charts |
| C. | Densification |
| D. | Electrical conductivity |
| Answer» C. Densification | |
| 7. |
Which type of microscopic technique has been developed that generate topographical maps representing the surface features and characteristics of the specimen? |
| A. | Optical |
| B. | Ultrasonic |
| C. | Electron |
| D. | Scanning probe |
| Answer» E. | |
| 8. |
Which technique is used to determine the grain size of polycrystalline materials? |
| A. | Photo micrographic technique |
| B. | Positron annihilation technique |
| C. | Measuring resistivity after quenching |
| D. | Thermal imaging |
| Answer» B. Positron annihilation technique | |
| 9. |
Which of the following microscope are not used for microscopy? |
| A. | Optical |
| B. | Ultrasonic |
| C. | Electron |
| D. | Scanning probe |
| Answer» C. Electron | |
| 10. |
Which of the following is not an important application of microstructure examination? |
| A. | To ensure that the associations between the properties and structure (and defects) are properly understood |
| B. | To predict the properties of materials once these relationships have been established |
| C. | To design alloys with new property combinations |
| D. | To ascertain the mode of chemical fracture |
| Answer» E. | |
| 11. |
For grain size number (ASTM) which of the following is true? |
| A. | Size of grains with grain size no 8 will be more than that of grain size no 5 |
| B. | Size of grains with grain size no 6 will be more than that of grain size no 7 |
| C. | Size of grains with grain size no 6 will be more than that of grain size no 2 |
| D. | Size of grains with grain size no 14 will be more than that of grain size no 15 |
| Answer» C. Size of grains with grain size no 6 will be more than that of grain size no 2 | |
| 12. |
Calculate the average number of grains per square inch at a magnification of 100. Consider grain number is 40? |
| A. | 5.49*10<sup>9</sup> |
| B. | 5.49*10<sup>7</sup> |
| C. | 5.49*10<sup>11</sup> |
| D. | 5.49*10<sup>6</sup> |
| Answer» D. 5.49*10<sup>6</sup> | |