- 1. Polymer engineering is a branch of engineering that deals with the design, development, and processing of polymer materials. Polymers are large molecules composed of repeated subunits, typically derived from petrochemicals or renewable sources such as plants. Polymer engineers work on various applications of polymers, such as in plastics, composites, coatings, adhesives, and more. They focus on understanding the structure-property relationships of polymers to optimize their performance and functionality. Polymer engineering plays a crucial role in industries such as automotive, aerospace, medical, and consumer goods, where advanced materials with specific properties are required. By manipulating the molecular structure and processing conditions, polymer engineers create innovative materials that meet the demands of modern technology and provide solutions to complex challenges.
What is a polymer?
A) A type of metal alloy
B) A large molecule composed of repeating structural units
C) A rare mineral found underground
D) A type of organic acid
- 2. Which polymer property is related to the ability of a material to retain its shape after being deformed?
A) Elasticity
B) Transparency
C) Density
D) Thermal conductivity
- 3. Which polymer property is important in applications where the material will be exposed to high temperatures?
A) Flexibility
B) Electrical conductivity
C) Transparency
D) Heat resistance
- 4. What is a common method for recycling polymer materials?
A) Mechanical recycling
B) Chemical incineration
C) Biodegradation
D) Landfill disposal
- 5. What does the term 'polymerization' mean in the context of polymer engineering?
A) The process of adding color to polymer materials
B) The process of extruding polymers
C) The process of breaking down polymers into monomers
D) The process of reacting monomer molecules together to form a polymer
- 6. What is a common example of a thermoplastic polymer?
A) Polyethylene
B) Epoxy resin
C) Phenol formaldehyde
D) Polyester
- 7. What is the role of a mold in injection molding of polymers?
A) To mix additives and polymers together
B) To give the polymer its desired shape
C) To test mechanical properties of the polymer
D) To cool the polymer rapidly
- 8. What is a common method for characterizing the molecular weight distribution of a polymer?
A) X-ray diffraction
B) UV-vis spectroscopy
C) Color titration
D) Gel permeation chromatography
- 9. What is the purpose of annealing in the context of polymer processing?
A) To cool the polymer rapidly
B) To enhance electrical conductivity
C) To relieve internal stresses and improve crystallinity
D) To increase material transparency
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