MCQOPTIONS
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MCQOPTIONS
This section includes 23 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. |
Which of the following cermet materials is used for rocket motor and jet-engine parts? |
| A. | Tungsten carbide |
| B. | Molybdenum carbide |
| C. | Chromium oxide |
| D. | Titanium bromide |
| Answer» D. Titanium bromide | |
| 2. |
The below figure represents ______ type of composites. |
| A. | Fiber |
| B. | Particulate |
| C. | Laminar |
| D. | Flake |
| Answer» C. Laminar | |
| 3. |
Paraplex is a common trade name for which thermoset? |
| A. | Epoxide |
| B. | Polyester |
| C. | Polyurethane |
| D. | Urea formaldehyde |
| Answer» C. Polyurethane | |
| 4. |
Which of the following is used as an adhesive? |
| A. | Epoxide |
| B. | Polyurethane |
| C. | Polyester |
| D. | Phenol formaldehyde |
| Answer» B. Polyurethane | |
| 5. |
A polymer having rubber-like properties is known as _______ |
| A. | Thermoset |
| B. | Thermoplastic |
| C. | Elastomer |
| D. | Polyisoprene |
| Answer» D. Polyisoprene | |
| 6. |
A_POLYMER_HAVING_RUBBER-LIKE_PROPERTIES_IS_KNOWN_AS________?$ |
| A. | Thermoset |
| B. | Thermoplastic |
| C. | Elastomer |
| D. | Polyisoprene |
| Answer» D. Polyisoprene | |
| 7. |
Paraplex is a common trade name for which thermoset?$ |
| A. | Epoxide |
| B. | Polyester |
| C. | Polyurethane |
| D. | Urea formaldehyde |
| Answer» C. Polyurethane | |
| 8. |
Which_of_the_following_is_used_as_an_adhesive?$ |
| A. | Epoxide |
| B. | Polyurethane |
| C. | Polyester |
| D. | Phenol formaldehyde |
| Answer» B. Polyurethane | |
| 9. |
SAP composite stands for ______ composite |
| A. | strengthened aluminum powder |
| B. | sintered aluminum powder |
| C. | strengthened ammonium particulate |
| D. | sintered aluminum particulate |
| Answer» D. sintered aluminum particulate | |
| 10. |
High-temperature strength of nickel alloys can be enhanced using dispersed particles of _______ |
| A. | Thorium |
| B. | Arsenic |
| C. | Bromide |
| D. | Antimony |
| Answer» C. Bromide | |
| 11. |
How much volume of carbon black is used in automobile tires? |
| A. | 2-3% |
| B. | 8-10% |
| C. | 15-30% |
| D. | 45-50% |
| Answer» B. 8-10% | |
| 12. |
Cermet is a _______ composite. |
| A. | particle-reinforced |
| B. | fiber-reinforced |
| C. | structural |
| D. | laminar |
| Answer» D. laminar | |
| 13. |
Fiber |
| A. | Particulate |
| B. | Laminar |
| C. | Flake |
| Answer» B. Laminar | |
| 14. |
Which of the following is a type of particle-reinforced composites? |
| A. | Continuous |
| B. | Laminates |
| C. | Dispersion-strengthened |
| D. | Sandwich panels |
| Answer» D. Sandwich panels | |
| 15. |
Urea formaldehyde shares properties and applications with which other thermoset? |
| A. | Phenol formaldehyde |
| B. | Polyurethane |
| C. | Epoxide |
| D. | Melamine formaldehyde |
| Answer» E. | |
| 16. |
Which plastic material does a combination of dibasic acids and polyhydric alcohols give? |
| A. | Polyester |
| B. | Polyurethane |
| C. | Epoxide |
| D. | Phenolic |
| Answer» B. Polyurethane | |
| 17. |
Melamine formaldehyde can be used at temperatures up to _____ |
| A. | 65<sup>o</sup>C |
| B. | 95<sup>o</sup>C |
| C. | 150<sup>o</sup>C |
| D. | 240<sup>o</sup>C |
| Answer» C. 150<sup>o</sup>C | |
| 18. |
Polyformaldehyde has a good stability up to _____ |
| A. | 50<sup>o</sup>C |
| B. | 100<sup>o</sup>C |
| C. | 150<sup>o</sup>C |
| D. | 250<sup>o</sup>C |
| Answer» D. 250<sup>o</sup>C | |
| 19. |
Phenolics are otherwise commonly known as _____ |
| A. | Bakelite |
| B. | Polyformaldehyde |
| C. | Urea formaldehyde |
| D. | Melamine formaldehyde |
| Answer» B. Polyformaldehyde | |
| 20. |
Which of the following is not an example of a thermoplastic polymer? |
| A. | Urethane |
| B. | Melamine |
| C. | Epoxide |
| D. | Acetal |
| Answer» E. | |
| 21. |
Which among these is an example of a commodity thermosetting plastic polymer material? |
| A. | Polyethylene |
| B. | Polypropylene |
| C. | Polystyrene |
| D. | Phenolic |
| Answer» E. | |
| 22. |
Which of the following is a property of thermosetting plastics? |
| A. | Can be molded |
| B. | Soft |
| C. | Recyclable |
| D. | Can be used at high temperatures |
| Answer» E. | |
| 23. |
Thermosetting plastics are formed by ________ |
| A. | addition polymerization |
| B. | copolymerization |
| C. | condensation polymerization |
| D. | isomerism |
| Answer» D. isomerism | |