Class 8 Science MCQ Chapter 3 Synthetic Fibres and Plastics Solutions in English Medium, Class 8 Science Multiple Choice Question Answer in English to each chapter is provided in the list so that you can easily browse throughout different chapters Class 8 Science MCQ Chapter 3 Synthetic Fibres and Plastics Notes and select need one.
Class 8 Science MCQ Chapter 3 Synthetic Fibres and Plastics
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Synthetic Fibres and Plastics
Chapter – 3
| MCQ |
1. The plastic used for making water pipes:
(a) Melamine.
(b) PVC.
(c) Polyester.
(d) Bakelite.
Ans: (b) PVC.
2. Which of the following is a bad conductor of electricity?
(a) Plastic.
(b) Copper.
(c) Steel.
(d) Brass.
Ans: (a) Plastic.
3. A chain of small chemical units combined to form a large single unit is called.
(a) Polymer.
(b) Poly.
(c) Polythene.
(d) None of the above.
Ans: (a) Polymer.
4. Polythene and PVC are examples of:
(a) Biodegradable substance.
(b) Thermosetting plastics.
(c) Thermoplastics.
(d) Rayon.
Ans: (c) Thermoplastics.
5. Plastics which when moulded once, cannot be softened by heating. Such plastics are called.
(a) Polythene.
(b) Thermoplastics.
(c) Polyester.
(d) Thermosetting plastics.
Ans: (d) Thermosetting plastics.
6. Polycot is made by mixing two types of fibres namely.
(a) Silk + Cotton.
(b) Polythene + cotton.
(c) Silk + Polyester.
(d) Polyester + Cotton.
Ans: (d) Polyester + Cotton.
7. The 4 R Principle is:
(a) Reduce, Reuse, Recycle, Recover.
(b) Remember, reduce, Recycle, Rejoice.
(c) Repeat, Rejoice, recycle, reduce.
(d) None of the above.
Ans: (a) Reduce, Reuse, Recycle, Recover.
8. Which of the following is Non-biodegradable:
(a) Woollen clothes.
(b) Plastic bag.
(c) Cotton cloth.
(d) Wood.
Ans: (b) Plastic bag.
9. Bakelite and Melamine are examples of:
(a) Thermosetting plastics.
(b) Silk.
(c) Nylon.
(d) Rayon.
Ans: (b) Silk.
10. Fire proof plastic uniform worn by firefighters has a coating of ______________ to make it fire resistant.
(a) Nylon.
(b) Rayon.
(c) Melamine plastic.
(d) Silk.
Ans: (c) Melamine plastic.
11. The coating on modern non- stick cookware and electric iron is of:
(a) Terrycot.
(b) Rayon.
(c) Polyester.
(d) Teflon.
Ans: (d) Teflon.
12. Which of the following is a natural fibre?
(a) Wool.
(b) Nylon.
(c) PVC.
(d) Polythene.
Ans: (d) Polythene.
13. Which of the following is a characteristic of plastics?
(a) Electrical conductors.
(b) Heat conductors.
(c) Biodegradable.
(d) Non-biodegradable.
Ans: (d) Non-biodegradable.
14. Pick The Synthetic Fibre Out Of The Following:
(a) Cotton.
(b) Nylon.
(c) Jute.
(d) Wool.
Ans: (b) Nylon.
15. Which of the following are made from thermosetting plastic?
(a) Bottles.
(b) Crockery.
(c) Shoes.
(d) Handbags.
Ans: (b) Crockery.
16. Wood pulp is used to make.
(a) plastic.
(b) wool.
(c) jute.
(d) rayon.
Ans: (d) rayon.
17. Which of the following once set do not soften on heating:
(a) thermoplastic.
(b) thermosetting plastic.
(c) polythene.
(d) none of these.
Ans: (b) thermosetting plastic.
18. Which of the following is natural fibre obtained from plants?
(a) Cotton.
(b) Wool.
(c) Rayon.
(d) Ketone.
Ans: (a) Cotton.
19. Which of the following cannot be recycled:
(a) plastic toys.
(b) plastic bowls.
(c) plastic covering on electric wires.
(d) ball point pens.
Ans: (c) plastic covering on electric wires.
20. Polymer present in plants is:
(a) cellulose.
(b) nylon.
(c) rubber.
(d) P.V.C.
Ans: (a) cellulose.
