Class 8 Exam > Class 8 Notes > Worksheet: Synthetic Fibres and Plastics
Synthetic Fibres and Plastics Class 8 Worksheet Science
Q.1. Do all plastics have the same type of arrangement of units?
Q.2. Give examples that indicate that nylon fibers are very strong.
Q.3. What are the advantages of nylon?
Q.4. Which is the first fully synthetic fiber?
Q.5. Why do electrical wires have a plastic covering and handles of screw drivers are made of plastic?
Q.6. How is the plastic used in the healthcare industry?
Q.7. What is PET? Write its uses.
Q.8. Define petrochemicals.
Q.9. Explain why some fibers are called synthetic.
Q.10. Why does plastic find such a variety of uses?
Q.11. Why should we not wear synthetic clothes while working in the kitchen or in a laboratory?
Q.12. “Even though plastics are very useful, they are not environment friendly.” Justify the statement.
Q.13. ‘Avoid plastics as far as possible. Comment on this advice.
Q.14. Why we should not throw polybags in the water bodies or on the road?
Q.15. Why is acrylic fiber more popular than wool?
You can access the solutions to this worksheet here.
FAQs on Synthetic Fibres and Plastics Class 8 Worksheet Science
| 1. What are synthetic fibres and how are they made? |  |
Ans. Synthetic fibres are man-made fibres created from chemical substances, typically derived from petroleum. They are produced through a process called polymerization, where small molecules (monomers) are chemically bonded to form long chains (polymers). Common examples include nylon, polyester, and acrylic.
| 2. What are the advantages of using synthetic fibres over natural fibres? | |
Ans. Synthetic fibres offer several advantages, including higher durability, resistance to moisture and mildew, and less susceptibility to pests. They also tend to be lighter, easier to care for, and can be produced in a wide range of colors and textures, making them versatile for different applications.
| 3. How do plastics differ from synthetic fibres? | |
Ans. While both plastics and synthetic fibres are derived from petrochemicals, they differ in their structure and applications. Plastics are typically used to create solid items like containers and packaging, whereas synthetic fibres are used primarily in textiles and fabrics. Plastics can be molded into various shapes, while synthetic fibres are usually woven or knitted.
| 4. What are some common uses of synthetic fibres in everyday life? | |
Ans. Synthetic fibres are used in a variety of everyday products, including clothing (like sportswear and outerwear), upholstery, carpets, and industrial materials. They are also used in products such as fishing lines, ropes, and medical supplies due to their strength and durability.
| 5. Are synthetic fibres environmentally friendly? | |
Ans. The environmental impact of synthetic fibres is a topic of concern. While they can be more durable and require less frequent replacement, their production involves significant energy consumption and pollution. Additionally, synthetic fibres can take hundreds of years to decompose, contributing to plastic pollution. However, there are ongoing efforts to develop more sustainable options and recycling methods.
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Nov 22, 2024 Last updated |
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