MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 11 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. |
What is the product of following polymerization reaction? ↔ |
| A. | ─[─NH─R─CO─]n |
| B. | ─[─R─NH─CO─]n |
| C. | ─[─NH─R─CO─]n-1 |
| D. | none of the mentionedView Answer |
| Answer» B. ─[─R─NH─CO─]n | |
| 2. |
What is the product of following polymerization reaction? ↔ |
| A. | [─R─CO─] |
| B. | [─O─R─CO─]n |
| C. | [O─CR─O─]n |
| D. | [─O─R─CO─]n-1View Answer |
| Answer» C. [O─CR─O─]n | |
| 3. |
Consider the following statements for condensation polymerization-I. Bifunctional or polyfunctional monomersII. Loss of each kind of functional group in each step for bifunctional speciesIII. Always accompanied by the release of a byproduct moleculeIV. Monofunctional or polyfunctional monomersWhich of the following are true? |
| A. | I and II |
| B. | I, II and III |
| C. | I and III |
| D. | III and IV |
| Answer» B. I, II and III | |
| 4. |
[─R─CO─] b) [─O─R─CO─]n$# |
| A. | [O─CR─O─]<sub>n</sub> |
| B. | [─O─R─CO─]<sub>n-1</sub> |
| Answer» B. [‚Äö√Ñ√∂‚àö√Ü‚àö√ëO‚Äö√Ñ√∂‚àö√Ü‚àö√ëR‚Äö√Ñ√∂‚àö√Ü‚àö√ëCO‚Äö√Ñ√∂‚àö√Ü‚àö√ë]<sub>n-1</sub> | |
| 5. |
Which of the following does not result in the formation of an ester? |
| A. | acid and alcohol |
| B. | acid chloride and alcohol |
| C. | ester and alcohol |
| D. | amine and acid |
| Answer» E. | |
| 6. |
Which of the following reactants react to give amidation reaction? |
| A. | amine and acid |
| B. | amine and alcohol |
| C. | amine and ester |
| D. | ester and alcohol |
| Answer» B. amine and alcohol | |
| 7. |
Which of the following byproduct is released when an ester reacts with alcohol? |
| A. | alcohol |
| B. | water |
| C. | ether |
| D. | no elimination |
| Answer» B. water | |
| 8. |
Which of the following byproduct is released when an amine reacts with acid chloride? |
| A. | HCl |
| B. | H<sub>2</sub>O |
| C. | NH<sub>3</sub> |
| D. | no elimination |
| Answer» B. H<sub>2</sub>O | |
| 9. |
Which of the byproduct molecule is released in the formation of polyurea? |
| A. | NH<sub>3</sub> |
| B. | H<sub>2</sub>O |
| C. | HCl |
| D. | no elimination |
| Answer» E. | |
| 10. |
How many molecules of hydrochloric acid are released when n monomers of di-acid chloride and n monomers of di-alcohol are reacted to form a polymer? |
| A. | 2n |
| B. | n-1 |
| C. | 2n-1 |
| D. | n |
| Answer» D. n | |
| 11. |
Consider a reaction of polymer formation by condensation polymerization, completed in n-steps, with the liberation of a certain byproduct. How many total molecules of byproduct are released as a result of complete reaction? |
| A. | n+1 |
| B. | n |
| C. | n-1 |
| D. | n/2 |
| Answer» C. n-1 | |