MCQOPTIONS
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MCQOPTIONS
This section includes 20 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. |
Which polyamide can be used as substitute of steel in belted radial tires? |
| A. | kevlar |
| B. | nomex |
| C. | nylon 12 |
| D. | nylon 11 |
| Answer» B. nomex | |
| 2. |
Which of the following monomer pair polymerizes to give an aramide? |
| A. | hexamethylene diamine + sebacic acid |
| B. | terephthaloyl chloride + phenylene diamine |
| C. | hexamethylene diamine + adipic acid |
| D. | none of the mentioned |
| Answer» C. hexamethylene diamine + adipic acid | |
| 3. |
What is the tensile strength exhibited by the moulded objects prepared from nylons? |
| A. | 12000 psi |
| B. | 1200 psi |
| C. | 60000 psi |
| D. | 6000 psi |
| Answer» B. 1200 psi | |
| 4. |
Which polyamide is formed when polymerization of isophthaloyl chloride and m-phenylene diamine takes place? |
| A. | nomex |
| B. | kevlar |
| C. | nylon 6 |
| D. | SBR |
| Answer» B. kevlar | |
| 5. |
Polyamides have a limited use in the areas where long exposure to temperatures above 70-90 ᵒC is required, due to their tendency of surface oxidation in air. Which heat stabilizer can permit their use even in higher temperatures? |
| A. | sodium salts |
| B. | copper salts |
| C. | potassium salts |
| D. | none of the mentioned |
| Answer» C. potassium salts | |
| 6. |
Name the polymer formed by the polymerization of ω-amino caproic acid using water as a catalyst? |
| A. | nylon 6 |
| B. | nylon 6,6 |
| C. | nomex |
| D. | abs |
| Answer» B. nylon 6,6 | |
| 7. |
WHICH_POLYAMIDE_IS_FORMED_WHEN_POLYMERIZATION_OF_ISOPHTHALOYL_CHLORIDE_AND_M-PHENYLENE_DIAMINE_TAKES_PLACE??$ |
| A. | nomex |
| B. | kevlar |
| C. | nylon 6 |
| D. | SBR |
| Answer» B. kevlar | |
| 8. |
Which of the following monomer pair polymerizes to give an aramide?$ |
| A. | hexamethylene diamine + sebacic acid |
| B. | terephthaloyl chloride + phenylene diamine |
| C. | hexamethylene diamine + adipic acid |
| D. | none of the mentioned |
| Answer» C. hexamethylene diamine + adipic acid | |
| 9. |
What_is_the_tensile_strength_exhibited_by_the_moulded_objects_prepared_from_nylons?$ |
| A. | 12000 psi |
| B. | 1200 psi |
| C. | 60000 psi |
| D. | 6000 psi |
| Answer» B. 1200 psi | |
| 10. |
How the viscosity of aromatic polyamide solutions does vary with the increase in volume fraction of polymer formed? |
| A. | Increases always |
| B. | first increases then decreases |
| C. | first decreases then increases |
| D. | decreases always |
| Answer» C. first decreases then increases | |
| 11. |
Which of the following nylons has a lower specific gravity than the others? |
| A. | nylon 6 |
| B. | nylon 66 |
| C. | both have nearly same |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 12. |
Which_polyamide_can_be_used_as_substitute_of_steel_in_belted_radial_tires? |
| A. | kevlar |
| B. | nomex |
| C. | nylon 12 |
| D. | nylon 11 |
| Answer» B. nomex | |
| 13. |
Where is the use of nylon films unsuitable, considering the properties required for applications? |
| A. | packaging of food stuffs |
| B. | packaging of drugs |
| C. | for pharmaceuticals |
| D. | none of the mentioned |
| Answer» E. | |
| 14. |
Polyamides have a limited use in the areas where long exposure to temperatures above 70-90 ᵒC is required, due to their tendency of surface oxidation in air. Which heat stabilizer can permit their use even in higher temperatures?$ |
| A. | sodium salts |
| B. | copper salts |
| C. | potassium salts |
| D. | none of the mentioned |
| Answer» C. potassium salts | |
| 15. |
Which of the following can help in achieving the mechanical properties of nylons? |
| A. | plasticizers |
| B. | nucleating agents |
| C. | mould agents |
| D. | impact modifiers |
| Answer» C. mould agents | |
| 16. |
Which of the following polyamides are known as aramids? |
| A. | aliphatic polyamides |
| B. | aromatic polyamides |
| C. | unsaturated polyamides |
| D. | all of the mentioned |
| Answer» C. unsaturated polyamides | |
| 17. |
Which of the following mechanism takes place for the formation of high molecular weight Nylon 6 from caprolactum? |
| A. | anionic mechanism |
| B. | cationic mechanism |
| C. | radical mechanism |
| D. | none of the mentioned |
| Answer» B. cationic mechanism | |
| 18. |
Monomer A is reacted with a monomer B in boiling methanol to form a salt. The salt dissolved in water with a little amount of acetic acid is then processed in autoclave at different temperatures and pressure. Monomer A is a bifunctional monomer having amine groups. What is the name of monomer B? |
| A. | adipic acid |
| B. | ω-amino caproic acid |
| C. | undecanoic acid |
| D. | dodecyl lactam |
| Answer» B. ‚âà√¨‚àö¬¢-amino caproic acid | |
| 19. |
What is the monomer pair required for the formation of Nylon 610? |
| A. | ω-amino caproic acid + diamine |
| B. | hexamethylene diamine + adipic acid |
| C. | hexamethylene diamine + sebacic acid |
| D. | hexamethylene diamine + decanoic acid |
| Answer» D. hexamethylene diamine + decanoic acid | |
| 20. |
Name the polymer formed by the polymerization of ω-amino caproic acid using water as a catalyst? |
| A. | nylon 6 |
| B. | nylon 6,6 |
| C. | nomex |
| D. | abs |
| Answer» B. nylon 6,6 | |