MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Polymer Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Where among the following fields polypropylene cannot be used? |
| A. | insulating cables and wires |
| B. | home appliances |
| C. | automobile appliances |
| D. | furniture |
| Answer» B. home appliances | |
| 2. |
WHERE_AMONG_THE_FOLLOWING_FIELDS_POLYPROPYLENE_CANNOT_BE_USED??$ |
| A. | insulating cables and wires |
| B. | home appliances |
| C. | automobile appliances |
| D. | furniture |
| Answer» B. home appliances | |
| 3. |
Which of the following is not a reaction variable for polymerization of polypropylene? |
| A. | molar ratio of catalyst composition |
| B. | catalyst concentration |
| C. | reaction temperature |
| D. | none of the mentioned |
| Answer» E. | |
| 4. |
Which among the following polymers is more prone to oxidation or aging? |
| A. | LDPE |
| B. | HDPE |
| C. | Polypropylene |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 5. |
Which of the following properties of polypropylene makes it inferior, when compared with polyethylene? |
| A. | brittleness |
| B. | tensile strength |
| C. | clarity |
| D. | stress cracking resitance |
| Answer» B. tensile strength | |
| 6. |
Which of the solvent is used to check degree of isotacticity of polypropylene? |
| A. | carbon tetra-cholirde |
| B. | n-propane |
| C. | n-hexane |
| D. | n-heptane |
| Answer» E. | |
| 7. |
Which of the following is used as a catalyst in the polymerization of propylene? |
| A. | MoO<sub>2</sub> |
| B. | CrO<sub>3</sub>+Al<sub>2</sub>O<sub>3</sub> |
| C. | Ni+Pt |
| D. | TiCl<sub>4</sub>+Al(C<sub>2</sub>H<sub>5</sub>)<sub>3</sub> |
| Answer» E. | |
| 8. |
What are the temperature and pressure conditions for the polymerization reaction of propylene? |
| A. | 50-80 ᵒC and 5-25 atm |
| B. | 50-80 ᵒC and 25-50 atm |
| C. | 100-150 ᵒC and 5-25 atm |
| D. | 100-150 ᵒC and 25-50 atm |
| Answer» B. 50-80 ¬¨‚à묨¬µ‚àö‚â†C and 25-50 atm | |
| 9. |
What is the approximate density of the polypropylene? |
| A. | 0.56 g/cm<sup>3</sup> |
| B. | 0.90 g/cm<sup>3</sup> |
| C. | 1.9 g/cm<sup>3</sup> |
| D. | 0.68 g/cm<sup>3</sup> |
| Answer» C. 1.9 g/cm<sup>3</sup> | |
| 10. |
Which of the following kind of polymer has the highest percentage in polypropylene? |
| A. | isotactic |
| B. | atactic |
| C. | syndiotactic |
| D. | all of the mentioned |
| Answer» B. atactic | |