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This section includes 4 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 kind of chain-initiating active centre is generated by bimolecular initiation mechanism of spontaneous thermal polymerization? |
A. | tmonoradical |
B. | tbiradical |
C. | tion |
D. | tnone of the mentioned |
Answer» C. tion | |
2. |
How does the overall rate of spontaneous thermal polymerization vary, when the monomer concentration is doubled? |
A. | thalved |
B. | tdoubled |
C. | tquadrupled |
D. | tremains constant |
Answer» D. tremains constant | |
3. |
Consider the following graph plotted between conversion and time taken, where benzoyl peroxide is used as an initiator.
|
A. | n<a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/polymer-engineering-questions-answers-online-quiz-q7.png"><img alt="The following curve represents the lowest monomer concentration is 5" class="aligncenter size-full wp-image-158795" height="218" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/polymer-engineering-questions-answers-online-quiz-q7.png" width="300"/></a> |
B. | t1 |
C. | t5 |
D. | t4 |
E. | t3 |
Answer» C. t5 | |
4. |
What is the characteristic feature of the gel effect in radical polymerization? |
A. | tincrease in kinetic rate |
B. | tincrease in molecular weight of product polymer |
C. | tformation of highly viscous mass |
D. | tall of the mentioned |
Answer» E. | |