MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject 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.Which of the following curve represents the lowest monomer concentration? |
| 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. | |