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. |
What is the approximate density of the polymer produced by the Ziegler process of polymerization? |
| A. | 0.945 g/cm3 |
| B. | 1.5 g/cm3 |
| C. | 0.5 g/cm3 |
| D. | 2.0 g/cm3 |
| Answer» B. 1.5 g/cm3 | |
| 2. |
Which of the following process employs highest range of temperature for the formation of HDPE? |
| A. | ziegler process |
| B. | phillips process |
| C. | indiana process |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 3. |
Which of the following are used as a promoter in the Standard Oil process for formation of HDPE? |
| A. | sodium hydride |
| B. | hydrogen halide |
| C. | sulphuric acid |
| D. | molybdenum oxide |
| Answer» B. hydrogen halide | |
| 4. |
Which of the following oxide works as a catalyst for the formation of high density polyethylene by Philips process? |
| A. | molybdenum oxide |
| B. | chromium oxide |
| C. | titanium oxide |
| D. | calcium oxide |
| Answer» C. titanium oxide | |
| 5. |
What is the possible heat of polymerization of ethylene? |
| A. | 800-1000 cal/g |
| B. | 164-180 cal/g |
| C. | 200-400 cal/g |
| D. | none of the mentioned |
| Answer» B. 164-180 cal/g | |
| 6. |
What is the affect of high pressure on the molecular weight of the polymer product formed? |
| A. | increases |
| B. | decreases |
| C. | no change |
| D. | cannot be determined |
| Answer» B. decreases | |
| 7. |
Which of the following can be used as an initiator for the formation of low density polyethylene (LDPE)? |
| A. | benzoyl peroxide |
| B. | sulphuric acid |
| C. | dithionite ion |
| D. | nitrobenzene |
| Answer» B. sulphuric acid | |
| 8. |
What is the allowable quantity of oxygen at a pressure of 2000 atm and temperature of 165 ᵒC for the polymerization process, over which explosion may occur? |
| A. | 0.075% |
| B. | 0.05% |
| C. | 10% |
| D. | 5% |
| Answer» B. 0.05% | |
| 9. |
What range of temperature is generally employed for low density polyethylene formation on kinetic considerations? |
| A. | 25-50 ᵒC |
| B. | 170-250 ᵒC |
| C. | 200-400 ᵒC |
| D. | 50-150 ᵒC |
| Answer» C. 200-400 ᵒC | |
| 10. |
What is the pressure range for the polymerization process of low density polyethylene? |
| A. | 1500-3000 atm |
| B. | 100-1000 atm |
| C. | 50-100 atm |
| D. | 25-50 atm |
| Answer» B. 100-1000 atm | |