MCQOPTIONS
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MCQOPTIONS
This section includes 17 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 of the following polymerization proceeds without the change in the composition of feed as well as copolymer? |
| A. | block polymerization |
| B. | ideal polymerization |
| C. | azeotropic polymerization |
| D. | alternate polymerization |
| Answer» D. alternate polymerization | |
| 2. |
Methacrylic acid and 2-vinyl pyridine are copolymerized together at 70ᵒC, where r1 and r2 have values 0.58 and 1.55, respectively. Which of the following component is present in more quantity in the copolymer formed in earlier stage? |
| A. | methacrylic acid |
| B. | 2-vinyl pyridine |
| C. | equimolar composition |
| D. | none of the mentioned |
| Answer» C. equimolar composition | |
| 3. |
What is the copolymer composition for azeotropic copolymerization of Acrylonitrile and 1,3-butadiene at 50ᵒC, given that r1=0.02 and r2=0.30? |
| A. | 0.21 |
| B. | 0.417 |
| C. | 0.84 |
| D. | 0.62 |
| Answer» C. 0.84 | |
| 4. |
What is the composition of copolymer formed by the copolymerization of 60% vinyl acetate and 40% vinyl chloride at 60ᵒC, given that r1=0.23 and r2=1.68? |
| A. | 0.39 |
| B. | 0.78 |
| C. | 0.63 |
| D. | cannot be determined |
| Answer» B. 0.78 | |
| 5. |
Calculate the feed composition for azeotropic copolymerization of methy methacrylate and styrene at 60ᵒC.(Given that r1=0.46 and r2=0.52) |
| A. | 0.47 |
| B. | 0.56 |
| C. | 0.235 |
| D. | 0.94 |
| Answer» B. 0.56 | |
| 6. |
What is the value of copolymer composition (mole fraction), F1 for alternate copolymerization? |
| A. | 0.5 |
| B. | 1 |
| C. | r1 |
| D. | 2 |
| Answer» B. 1 | |
| 7. |
WHAT_IS_THE_COPOLYMER_COMPOSITION_FOR_AZEOTROPIC_COPOLYMERIZATION_OF_ACRYLONITRILE_AND_1,3-BUTADIENE_AT_50¬¨‚Àˬ¨¬µ‚Àւ†C,_GIVEN_THAT_R1=0.02_AND_R2=0.30??$# |
| A. | 0.21 |
| B. | 0.417 |
| C. | 0.84 |
| D. | 0.62 |
| Answer» C. 0.84 | |
| 8. |
Which of the following polymerization proceeds without the change in the composition of feed as well as copolymer?$ |
| A. | block polymerization |
| B. | ideal polymerization |
| C. | azeotropic polymerization |
| D. | alternate polymerization |
| Answer» D. alternate polymerization | |
| 9. |
Methacrylic_acid_and_2-vinyl_pyridine_are_copolymerized_together_at_70ᵒC,_where_r1_and_r2_have_values_0.58_and_1.55,_respectively._Which_of_the_following_component_is_present_in_more_quantity_in_the_copolymer_formed_in_earlier_stage?$# |
| A. | methacrylic acid |
| B. | 2-vinyl pyridine |
| C. | equimolar composition |
| D. | none of the mentioned |
| Answer» C. equimolar composition | |
| 10. |
What is the composition of copolymer formed by the copolymerization of 60% vinyl acetate and 40% vinyl chloride at 60ᵒC, given that r1=0.23 and r2=1.68?# |
| A. | 0.39 |
| B. | 0.78 |
| C. | 0.63 |
| D. | cannot be determined |
| Answer» B. 0.78 | |
| 11. |
Calculate the feed composition for azeotropic copolymerization of methy methacrylate and styrene at 60ᵒC.(Given that r1=0.46 and r2=0.52)$ |
| A. | 0.47 |
| B. | 0.56 |
| C. | 0.235 |
| D. | 0.94 |
| Answer» B. 0.56 | |
| 12. |
Which of the following combinations undergoing polymerization give polysulphones? |
| A. | olefins and sulphur dioxide |
| B. | cycloolefins and metal sulphate |
| C. | olefins and sulphur trioxide |
| D. | vinyl monomer and sulphur ring |
| Answer» B. cycloolefins and metal sulphate | |
| 13. |
What is the value of copolymer composition (mole fraction), F1 for alternate copolymerization? |
| A. | 0.5 |
| B. | 1 |
| C. | r1 |
| D. | 2 |
| Answer» B. 1 | |
| 14. |
Which of the following is correct regarding the alternate copolymerization? |
| A. | r<sub>1</sub>r<sub>2</sub>=1 |
| B. | r<sub>1</sub>=r<sub>2</sub>=1 |
| C. | r<sub>1</sub>r<sub>2</sub>=0 |
| D. | r<sub>1</sub>r<sub>2</sub>>1 |
| Answer» D. r<sub>1</sub>r<sub>2</sub>>1 | |
| 15. |
As the difference in the reactivities of the both significant monomers increases, an increasing difficulty in the production of copolymer is encountered as a result of ideal copolymerization. State true or false. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 16. |
Which of the following is true if the two monomers involved in copolymerization, are equally reactive with each radical? |
| A. | r<sub>1</sub>=r<sub>2</sub>=1 |
| B. | F<sub>1</sub>=f<sub>1</sub> |
| C. | random arrangement of monomer units |
| D. | all of the mentioned |
| Answer» E. | |
| 17. |
When is the copolymerization said to be an ideal copolymerization? |
| A. | Copolymer composition F<sub>1</sub> not equal to monomer feed composition f<sub>1</sub> |
| B. | r<sub>1</sub>r<sub>2</sub>=1 |
| C. | r<sub>1</sub>=r<sub>2</sub> |
| D. | r<sub>1</sub>=1 |
| Answer» C. r<sub>1</sub>=r<sub>2</sub> | |