MCQOPTIONS
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MCQOPTIONS
This section includes 21 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. |
What is the rate of growth of chains in condensation polymerization? |
| A. | 10-2 to 102 seconds |
| B. | 10 minutes |
| C. | Hours or days |
| D. | Weeks |
| Answer» D. Weeks | |
| 2. |
Addition of different types of monomers to form polymer chains is known as _______ |
| A. | Chain reaction polymerization |
| B. | Copolymerization |
| C. | Combination |
| D. | Disproportionation |
| Answer» C. Combination | |
| 3. |
Which of the following is not a stage of addition polymerization? |
| A. | Initiation |
| B. | Propagation |
| C. | Termination |
| D. | Recrystallisation |
| Answer» E. | |
| 4. |
Which of the following types of polymers is a copolymer? |
| A. | Graft |
| B. | Network |
| C. | Linear |
| D. | Branched |
| Answer» B. Network | |
| 5. |
Which molecular structure does the figure represent? |
| A. | Random |
| B. | Alternating |
| C. | Block |
| D. | Graft |
| Answer» D. Graft | |
| 6. |
Which molecular structure does the below figure represent? |
| A. | Linear |
| B. | Branched |
| C. | Cross-linked |
| D. | Network |
| Answer» D. Network | |
| 7. |
WHICH_OF_THE_FOLLOWING_IS_NOT_A_STAGE_OF_ADDITION_POLYMERIZATION??$ |
| A. | Initiation |
| B. | Propagation |
| C. | Termination |
| D. | Recrystallisation |
| Answer» E. | |
| 8. |
WHICH_OF_THE_FOLLOWING_TYPES_OF_POLYMERS_IS_A_COPOLYMER??$ |
| A. | Graft |
| B. | Network |
| C. | Linear |
| D. | Branched |
| Answer» B. Network | |
| 9. |
What is the rate of growth of chains in condensation polymerization?$ |
| A. | 10<sup>-2</sup> to 10<sup>2</sup> seconds |
| B. | 10 minutes |
| C. | Hours or days |
| D. | Weeks |
| Answer» D. Weeks | |
| 10. |
Addition of different types of monomers to form polymer chains is known as _______$ |
| A. | Chain reaction polymerization |
| B. | Copolymerization |
| C. | Combination |
| D. | Disproportionation |
| Answer» C. Combination | |
| 11. |
Carbon fiber is an example of ________ |
| A. | Filler |
| B. | Stabilizer |
| C. | Reinforcement |
| D. | Flame retardant |
| Answer» D. Flame retardant | |
| 12. |
Which polymer additive is used to remove parts from molds? |
| A. | Plasticizers |
| B. | Stabilizers |
| C. | Lubricants |
| D. | Reinforcements |
| Answer» D. Reinforcements | |
| 13. |
Which of the following is an example of flame retardants? |
| A. | Talc |
| B. | Dye |
| C. | Antimony oxide |
| D. | Glyceride |
| Answer» D. Glyceride | |
| 14. |
The optical opacity of a polymer can be controlled by using ______ |
| A. | Stabilizers |
| B. | Colorants |
| C. | Flame retardants |
| D. | Reinforcements |
| Answer» C. Flame retardants | |
| 15. |
Which of the following is an example of a stabilizer? |
| A. | Benzophenon |
| B. | Polyvinyl chloride |
| C. | Titanium dioxide |
| D. | Antimony oxide |
| Answer» B. Polyvinyl chloride | |
| 16. |
Which polymer additives are added to improve flexibility? |
| A. | Lubricants |
| B. | Plasticizers |
| C. | Stabilizers |
| D. | Reinforcements |
| Answer» C. Stabilizers | |
| 17. |
Wood flour and silica flour are examples of ______ |
| A. | Fillers |
| B. | Plasticizers |
| C. | Stabilizers |
| D. | Lubricants |
| Answer» B. Plasticizers | |
| 18. |
Liquid or gas polymers having short chains and low molecular weights are known as _____ |
| A. | High-polymers |
| B. | Homopolymers |
| C. | Copolymers |
| D. | Oligo-polymers |
| Answer» E. | |
| 19. |
A polymer made of identical monomer units is called ______ |
| A. | Homopolymer |
| B. | Linear polymer |
| C. | Copolymer |
| D. | Branched polymer |
| Answer» B. Linear polymer | |
| 20. |
The number of repeating units in a polymer is known as __________ |
| A. | monomer |
| B. | degree of polymerization |
| C. | molecule |
| D. | chain |
| Answer» C. molecule | |
| 21. |
Which of the following is not a characteristic trait of polymer materials? |
| A. | Low density |
| B. | Resistant to chemical attack |
| C. | Low cost |
| D. | High strength |
| Answer» E. | |