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Chapters
2: Microorganisms : Friend and Foe
▶ 3: Synthetic Fibres and Plastics
4: Materials : Metals and Non-metals
5: Coal and Petroleum
6: Combustion and Flame
7: Conservation of Plants and Animals
8: Cell - Structure and Functions
9: Reproduction in Animals
10: Reaching the Age of Adolescence
11: Force and Pressure
12: Friction
13: Sound
14: Chemical Effects of Electric Current
15: Some Natural Phenomena
16: Light
17: Stars and the Solar System
18: Pollution of Air and Water
![NCERT solutions for Science [English] Class 8 chapter 3 - Synthetic Fibres and Plastics - Shaalaa.com](/images/9788174508126-science-english-class-8_6:f01f021682b543f590f4632481d5fb45.jpg "NCERT solutions for Science [English] Class 8 chapter 3 - Synthetic Fibres and Plastics")
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Solutions for Chapter 3: Synthetic Fibres and Plastics
Below listed, you can find solutions for Chapter 3 of CBSE NCERT for Science [English] Class 8.
NCERT solutions for Science [English] Class 8 3 Synthetic Fibres and Plastics Exercises [Pages 41 - 42]
Explain why some fibres are called synthetic.
Mark (✓) the correct answer:
Rayon is different from synthetic fibres because
it has a silk like appearance
it is obtained from wood pulp
its fibres can also be woven like those of natural fibres
Fill in the blanks with appropriate words.
Synthetic fibres are also called ______ or _______ fibres.
Fill in the blanks with appropriate words.
Synthetic fibres are synthesised from raw materials called ______
Fill in the blanks with appropriate words.
Like synthetic fibres, plastic is also a _______
Give examples which indicate that nylon fibres are very strong.
Explain why plastic containers are favoured for storing food.
Explain the difference between thermoplastic and thermosetting plastics.
Explain why the following is made of thermosetting plastics.
Saucepan handles
Explain why the following is made of thermosetting plastics?
Electric plugs/switches/plug boards
Categorize the materials of the following products into ‘can be recycled’ and ‘cannot be recycled’.
Telephone instruments, plastic toys, cooker handles, carry bags, ball point pens, plastic bowls, plastic covering on electrical wires, plastic chairs, electrical switches.
Rana wants to buy shirts for summer. Should he buy cotton shirts or shirts made from synthetic material? Advise Rana, giving your reason.
Give examples to show that plastics are non-corrosive in nature.
Should the handle and bristles of a tooth brush be made of the same material? Explain your answer.
‘Avoid plastics as far as possible’. Comment on this advice.
Match the terms of column A correctly with the phrases given in column B.
| A | B | ||
| 1 | Polyester | a | Prepared by using wood pulp |
| 2 | Teflon | b | Used for making parachutes and stockings |
| 3 | Rayon | c | Used to make non-stick cookware |
| 4 | Nylon | d | Fabrics do not wrinkle easily |
‘Manufacturing synthetic fibres is actually helping conservation of forests’. Comment.
Describe an activity to show that thermoplastic is a poor conductor of electricity.
Solutions for 3: Synthetic Fibres and Plastics
NCERT solutions for Science [English] Class 8 chapter 3 - Synthetic Fibres and Plastics
Shaalaa.com has the CBSE Mathematics Science [English] Class 8 CBSE solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. NCERT solutions for Mathematics Science [English] Class 8 CBSE 3 (Synthetic Fibres and Plastics) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. NCERT textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.
Concepts covered in Science [English] Class 8 chapter 3 Synthetic Fibres and Plastics are Man-made Fibre: Synthetic Fibres, Man-made Fibre: Plastics, Harmful Effects of Plastics, Fibre, Fabrics, Rayon, Nylon, Dacron, Terylene, Terene, Biodegradable Plastics, Recycling of Plastic.
Using NCERT Science [English] Class 8 solutions Synthetic Fibres and Plastics exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in NCERT Solutions are essential questions that can be asked in the final exam. Maximum CBSE Science [English] Class 8 students prefer NCERT Textbook Solutions to score more in exams.
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