MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If the deformation is carried at 500°C, it is |
| A. | cold working |
| B. | hot working |
| C. | both a and b |
| D. | can’t say |
| Answer» E. | |
| 2. |
If the deformation is carried at 100°C, it is |
| A. | cold working |
| B. | hot working |
| C. | both a and b |
| D. | can’t say |
| Answer» E. | |
| 3. |
Hot working process is carried out on ……….. Recrystallisation temp. |
| A. | equal |
| B. | above |
| C. | below |
| D. | none of the above |
| Answer» C. below | |
| 4. |
Lower the degree of deformation, recrystallization temperature is |
| A. | higher |
| B. | lower |
| C. | no effect |
| D. | either higher or lower |
| Answer» C. no effect | |
| 5. |
HCP having atomic packing factor |
| A. | 0.68 |
| B. | 0.52 |
| C. | 0.74 |
| D. | 0.72 |
| Answer» D. 0.72 | |
| 6. |
If the deformation is carried at 0°C, it is |
| A. | cold working |
| B. | hot working |
| C. | both a and b |
| D. | can’t say |
| Answer» E. | |
| 7. |
Higher the degree of deformation, recrystallization temperature is |
| A. | higher |
| B. | lower |
| C. | no effect |
| D. | either higher or lower |
| Answer» B. lower | |
| 8. |
Handling is difficult in |
| A. | hot working |
| B. | cold working |
| C. | both a and b |
| D. | can’t say |
| Answer» B. cold working | |
| 9. |
Grain boundaries decides                         of dislocations that can move |
| A. | lenghts |
| B. | magnitude |
| C. | direction |
| D. | none of the above |
| Answer» B. magnitude | |
| 10. |
HCP have Average no. of atoms per unit cell |
| A. | 6 |
| B. | 2 |
| C. | 4 |
| D. | 8 |
| Answer» B. 2 | |
| 11. |
Hardness during over-aging |
| A. | decreases |
| B. | increases |
| C. | constant |
| D. | decreases abruptly |
| Answer» B. increases | |
| 12. |
grain boundaries the dislocation motion |
| A. | allows |
| B. | restricts |
| C. | bypass |
| D. | all of the above |
| Answer» C. bypass | |
| 13. |
Good surface finish in................ process |
| A. | cold working |
| B. | hot working |
| C. | casting |
| D. | welding |
| Answer» B. hot working | |
| 14. |
Frenkel defect have missing of |
| A. | cation |
| B. | anion |
| C. | electron |
| D. | both a&b |
| Answer» B. anion | |
| 15. |
Following strengthening mechanism applies to multi-phase material |
| A. | grain size reduction |
| B. | dispersion hardening |
| C. | solid solution strengthenin g |
| D. | strain hardening |
| Answer» C. solid solution strengthenin g | |
| 16. |
Fine grain size, usually, can not be obtained during the following process |
| A. | slow cooling |
| B. | increasing nucleation rate |
| C. | retarding grain growth |
| D. | fast cooling |
| Answer» B. increasing nucleation rate | |
| 17. |
Forces required in cold working is than hot working |
| A. | greater |
| B. | less |
| C. | equal |
| D. | can’t say |
| Answer» B. less | |
| 18. |
Figure out the odd one in the following |
| A. | frenkel defect |
| B. | tilt boundary |
| C. | twist boundary |
| D. | stacking fault |
| Answer» B. tilt boundary | |
| 19. |
FCC materials are good in …. |
| A. | brittle |
| B. | malleable |
| C. | ductile |
| D. | hard |
| Answer» D. hard | |
| 20. |
FCC having stacking |
| A. | abcabca bc |
| B. | aaaaaaa |
| C. | abababa b |
| D. | abcabab c |
| Answer» B. aaaaaaa | |
| 21. |
FCC having atomic packing factor |
| A. | 0.68 |
| B. | 0.52 |
| C. | 0.74 |
| D. | 0.72 |
| Answer» D. 0.72 | |
| 22. |
FCC have Average no. of atoms per unit cell |
| A. | 6 |
| B. | 2 |
| C. | 4 |
| D. | 8 |
| Answer» D. 8 | |
| 23. |
Dislocations have types |
| A. | 2 |
| B. | 1 |
| C. | 3 |
| D. | 5 |
| Answer» D. 5 | |
| 24. |
Example for strengthening mechanism in single-phase material |
| A. | strain hardening |
| B. | precipitatio n hardening |
| C. | fiber strengthenin g |
| D. | dispersion strengthenin g |
| Answer» B. precipitatio n hardening | |
| 25. |
FCC have ligancy number |
| A. | 6 |
| B. | 12 |
| C. | 4 |
| D. | 8 |
| Answer» C. 4 | |
| 26. |
Dimensional accuracy is better in |
| A. | hot working |
| B. | cold working |
| C. | both a and b |
| D. | can’t say |
| Answer» C. both a and b | |
| 27. |
FCC crystal having crystal systems. |
| A. | 12 |
| B. | 10 |
| C. | 6 |
| D. | 24 |
| Answer» B. 10 | |
| 28. |
Density of material depends on ….. |
| A. | no.of atoms/unit cell |
| B. | atomic packing factor |
| C. | coordinatio n number |
| D. | both a&b |
| Answer» E. | |
| 29. |
Decrease in free energy during recrystallization is attributed to |
| A. | excess point defects |
| B. | excess dislocations |
| C. | grain boundaries |
| D. | all |
| Answer» C. grain boundaries | |
| 30. |
Deformation of steel at room temperature is |
| A. | hot working |
| B. | cold working |
| C. | both a and b |
| D. | can’t say |
| Answer» C. both a and b | |
| 31. |
Decrease in free energy during recovery is attributed to |
| A. | excess point defects |
| B. | excess dislocations |
| C. | grain boundaries |
| D. | all |
| Answer» B. excess dislocations | |
| 32. |
Cu diffuses in FCC Ni, this is type of impurity |
| A. | substitution al |
| B. | interstitial |
| C. | both a & b |
| D. | none of the above |
| Answer» B. interstitial | |
| 33. |
Crystallographic planes are represented by 3 numbers enclosed in |
| A. | {} bracket |
| B. | [ ] square bracket |
| C. | ( ) raound bracket |
| D. | none of the above |
| Answer» D. none of the above | |
| 34. |
Crystal structure is arrangement of in different patterns |
| A. | electrons |
| B. | protons |
| C. | atoms |
| D. | crystals |
| Answer» D. crystals | |
| 35. |
HCP structure have ligancy ….. |
| A. | 6 |
| B. | 8 |
| C. | 10 |
| D. | 12 |
| Answer» E. | |
| 36. |
Ligancy of FCC structure are….. |
| A. | 6 |
| B. | 8 |
| C. | 10 |
| D. | 12 |
| Answer» E. | |
| 37. |
Coordination Number of Body-Centered Cubic structure is….. |
| A. | 6 |
| B. | 8 |
| C. | 10 |
| D. | 12 |
| Answer» C. 10 | |
| 38. |
Coordination number in simple cubic crystal structure |
| A. | 8 |
| B. | 6 |
| C. | 12 |
| D. | 4 |
| Answer» C. 12 | |
| 39. |
Coordination number for closest packed crystal structure |
| A. | 16 |
| B. | 12 |
| C. | 8 |
| D. | 4 |
| Answer» C. 8 | |
| 40. |
Cold working process is carried out on ……….. Recrystallisation temp. |
| A. | equal |
| B. | above |
| C. | below |
| D. | none of the above |
| Answer» D. none of the above | |
| 41. |
  Burger vector to dislocation line is for edge dislocations |
| A. | perpendicul ar |
| B. | parallel |
| C. | inclined |
| D. | first perpendicul ar then parallel |
| Answer» C. inclined | |
| 42. |
Carbon diffuses in Fe, this is type of impurity |
| A. | substitution al |
| B. | interstitial |
| C. | both a & b |
| D. | none of the above |
| Answer» C. both a & b | |
| 43. |
Burger vector gives of the shift |
| A. | amount |
| B. | quality |
| C. | plane |
| D. | atoms |
| Answer» B. quality | |
| 44. |
Beneficial property of foreign particles |
| A. | reduces density |
| B. | act as stress raisers |
| C. | obstructs dislocation motion |
| D. | none |
| Answer» D. none | |
| 45. |
BCC having stacking |
| A. | abcabca bc |
| B. | aaaaaaa |
| C. | abababa b |
| D. | abcabab c |
| Answer» D. abcabab c | |
| 46. |
BCC have ligancy number |
| A. | 6 |
| B. | 12 |
| C. | 4 |
| D. | 8 |
| Answer» E. | |
| 47. |
Average frequency of atomic vibrations in a solid (in Hz) |
| A. | 10-12 |
| B. | 10-13 |
| C. | 10+12 |
| D. | 10+13 |
| Answer» E. | |
| 48. |
BCC have Average no. of atoms per unit cell |
| A. | 6 |
| B. | 2 |
| C. | 4 |
| D. | 8 |
| Answer» C. 4 | |
| 49. |
Atomic packing factor is |
| A. | distance between two adjacent atoms |
| B. | projected area fraction of atoms on a plane |
| C. | volume fraction of atoms in cell |
| D. | none |
| Answer» D. none | |
| 50. |
HCP structure have APF (Atomic Packing Factor) of ….. |
| A. | 0.74 |
| B. | 0.52 |
| C. | 0.68 |
| D. | 0.8 |
| Answer» B. 0.52 | |