Plastics MCQs Quiz Multiple Choice Questions & Answers

1. Which of the following is commonly used in schools for vacuum forming?

1. HIPS
2. Polyester
3. PVC
4. Melamine (MF)

2. Which process is used to manufacture plastic pipes?

1. Extrusion moulding
2. Blow moulding
3. Vacuum forming
4. Injection moulding

3. Which of the following characteristics does not affect the properties of plastics?

1. Their degree of polymerization
2. Both a. and b
3. None of the above
4. Their molecular structure

4. Thermosetting materials are

1. the plastics which require heat and pressure to mould them into shape
2. both a. and b.
3. none of the above
4. the plastics which can be softened even after they have set and hardened

5. Which plastic materials contain strong cross linkings in their molecular structure?

1. Thermosetting materials
2. Both a. and b.
3. None of the above
4. Thermoplastic materials

6. Which of the following is an example of thermoplastic material?

1. Automobile parts
2. Electric plugs
3. Electric insulation
4. Camera bodies

7. The process of combining two or more distinct polymer molecules to form a new product with different characteristics is called as

1. stabilizing
2. filling
3. blending
4. binding

8. Which plastic is used to laminate kitchen worktops?

1. Polyester (PET)
2. Melamine
3. PVC
4. Epoxy resin

9. Which of the following is used to manufacture carrier bags?

1. HDPE (High Density PolyEthylene)
2. Polycarbonate
3. PVC
4. LDPE (Low Density PolyEthylene)

10. Which of the following is used to make CDs?

1. PTFE
2. Polycarbonate
3. Polypropylene
4. PVC

11. Specific gravity of the plastics is usually

1. more than the specific gravity of metals
2. similar to the specific gravity of metals
3. Unpredictable
4. less than the specific gravity of metals

12. The materials such as lead and barium, which are added with polymers to minimize the effect of heat, sunlight and ozone are called as

1. blenders
2. stabilisers
3. fillers
4. binders

13. The plastics which soften when heat is applied with or without pressure, but requires cooling to set them to shape are called as

1. thermosetting materials
2. thermoplastic materials
3. thermostatting materials
4. thermosofting materials

14. Why are the plasticisers added with polymers?

1. To reduce the cost and enhance the strength and hardness of plastics
2. To improve flexibility and to reduce the temperature and pressure required for moulding of plastics
3. None of the abov
4. To hold other constituents of plastic together