1. Materials are selected based on their…, A. Colour only, B. Working properties , C. Cost alone, D. Country of origin, 2. Which of the following is NOT listed as a consideration when selecting materials?, A. How they look, B. How they perform in use, C. How popular they are , D. How they can be manufactured, 3. Most polymers are described as…, A. Natural, B. Renewable, C. Synthetic , D. Biodegradable, 4. Who designs most polymers?, A. Designers, B. Manufacturers, C. Chemical engineers , D. Retailers, 5. Why are new polymers constantly being developed?, A. To reduce colour choice, B. To meet consumer demands , C. To replace metals, D. To reduce durability, 6. Polymers fall into how many main categories?, A. One, B. Two, C. Three, D. Four, 7. Which is a thermosetting plastic also known as?, A. Thermoplastic, B. Thermoformer, C. Thermoset , D. Polymer blend, 8. What does the word ‘thermo’ indicate?, A. Pressure is used, B. Chemicals are added, C. Heat is involved , D. Cooling is required, 9. What happens to a thermosetting plastic once it has been set?, A. It can be reshaped repeatedly, B. It melts completely, C. It cannot be reshaped , D. It becomes elastic, 10. What happens if more heat is applied to a thermoset plastic?, A. It softens, B. It stretches, C. It burns , D. It melts evenly, 11. Thermoforming plastics can be…, A. Heated once only, B. Reheated and reshaped, C. Burned safely, D. Set permanently, 12. Thermoforming plastics are also known as…, A. Thermosets, B. Elastomers, C. Thermoplastics , D. Biopolymers, 13. Why is acrylic commonly used in schools?, A. It is biodegradable, B. It can be heated and bent, C. It is heatproof, D. It is flexible when cold, 14. Which tool is used to bend acrylic?, A. Heat gun, B. Oven, C. Line bender, D. Injection mould, 15. Why would acrylic NOT be suitable for a hairdryer?, A. It is too expensive, B. It is not transparent, C. It would deform with heat , D. It cannot be coloured, 16. Which of the following is a polymer commonly used in schools?, A. Nylon, B. Acrylic, C. PVC, D. Epoxy resin, 17. PLA is mainly used in schools for…, A. Injection moulding, B. Vacuum forming, C. 3D printing , D. Blow moulding, 18. Aesthetic properties refer to…, A. Strength and toughness, B. Cost and availability, C. How a material looks and feels, D. Environmental impact, 19. How can the look and feel of a polymer be changed?, A. Changing the yarn, B. Changing the polymer mix , C. Increasing heat, D. Reducing thickness, 20. Why is there a drive to reduce plastic use?, A. Plastics are weak, B. Plastics are expensive, C. Plastics do not biodegrade quickly , D. Plastics are difficult to shape, 21. What is the most common 3D printer filament mentioned?, A. ABS, B. Nylon, C. PLA , D. PET, 22. Why are prototypes often made using 3D printers?, A. They are slower, B. They are cheaper and more complex , C. They use no energy, D. They replace mass production, 23. Which material can be added to PLA filament?, A. Wool, B. Carbon fibre, C. Glass, D. Rubber, 24. Which factor should designers consider when choosing materials?, A. Brand name, B. Fashion trends, C. Environmental issues , D. Advertising, 25. How can designers help reduce poverty and low labour costs?, A. Using cheaper materials, B. Choosing ethical options , C. Increasing production, D. Automating all processes, 26. The cost of polymers varies depending on how…, A. Colourful they are, B. Heavy they are, C. Specialised they are, D. Recyclable they are.

Selecting Plastics

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