1. What is used to permanently join materials together?, A. Paint, B. Adhesives , C. Fasteners, D. Fabric, 2. What is an adhesive?, A. A type of plastic, B. A substance that bonds surfaces together , C. A cutting tool, D. A finishing process, 3. Why are there different types of adhesives?, A. For colour choice, B. To suit different materials and strengths , C. To reduce cost, D. To improve appearance only, 4. Which adhesive is designed specifically for joining acrylic to acrylic?, A. Epoxy resin, B. Contact adhesive, C. Solvent cement , D. Hot glue, 5. How is solvent cement applied?, A. Sprayed on both surfaces, B. Poured into a mould, C. Applied with a brush or syringe, D. Mixed with hardener, 6. What type of join does solvent cement create?, A. Weak and visible, B. Flexible and rubbery, C. Invisible , D. Temporary, 7. Epoxy resin (ER) is best described as…, A. A single-part adhesive, B. A solvent-based glue, C. A two-part adhesive, D. A welding method, 8. What two parts make up epoxy resin?, A. Glue and solvent, B. Resin and hardener , C. Powder and liquid, D. Plastic and filler, 9. Before epoxy resin is used, the two parts must be…, A. Heated, B. Frozen, C. Mixed in equal quantities, D. Left to dry, 10. Why do parts joined with epoxy resin often need clamping?, A. It dries instantly, B. It takes time to set , C. It is weak, D. It melts the plastic, 11. Which adhesive sticks when two surfaces come into contact?, A. Solvent cement, B. Epoxy resin, C. Contact adhesive, D. PVA glue, 12. How is contact adhesive applied?, A. To one surface only, B. After heating, C. To both surfaces and air-dried , D. Mixed with hardener, 13. How long should contact adhesive be left to air dry before joining?, A. 1 minute, B. 5 minutes, C. 10 minutes , D. 30 minutes, 14. Plastic welding joins polymers by…, A. Gluing the surfaces, B. Freezing the joint, C. Melting the edges together , D. Compressing the parts, 15. What type of welding rods are used in plastic welding?, A. Metal rods, B. Wooden dowels, C. Thermoforming welding rods, D. Carbon fibre rods, 16. Why are welding rods used in plastic welding?, A. To colour the joint, B. To melt additional plastic into the join , C. To cool the joint, D. To clamp the parts.

Joining Plastics

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