Synthetic fibre is the artificial fibre synthesised in factories using chemicals. They are made of small units of monomers joined together to form a long-chain polymer. Some examples of synthetic fibres are nylon, acrylic, rayon, and plastic.
Plastic is also an artificial fibre like synthetic fibre. It can be linear or cross-linked. All types of plastics do not have the same kind of arrangement of units.
Download Class 8 Chemistry Worksheet on Chapter 3 Synthetic Fibres and Plastics Set 1 PDF
CBSE Class 8 Chemistry Chapter 3 Synthetic Fibres and Plastics Worksheet – Set 1
Q1. Which of the following is an artificial fibre?
(a) Wool
(b) Nylon
(c ) Cotton
(d) None of the above
Q2. We can use the wool pulp to synthesise
(a) Rayon
(b) Nylon
(c ) Acrylic
(d) None of the above
Q3. Which of the following is the most potent artificial fibre?
(a) Rayon
(b) Nylon
(c ) Acrylic
(d) None of the above
Q4. Polymers are made up of small units of ______.
(a) Cells
(b) Layers
(c ) Molecules
(d) None of the above
Q5. Which of the following is known as artificial silk?
(a) Rayon
(b) Nylon
(c ) Acrylic
(d) None of the above
Q6. Which of the following is made up of chemicals?
Rayon, Nylon, Cotton, Silk.
Q7. How synthetic fibres are obtained?
Q8. Name an artificial fibre derived from the cellulose polymer?
Q9. What are the applications of PET?
Q10. What are thermo and thermosetting plastics?
Q11. Why do we use thermosetting plastic for making handles of cookers?
Q12. Name the substance used for non-stick coating utensils.
Q13. Why do we use plastic to make switches and plugs?
Q14. Why is metal heavier than plastic?
Q15. Do biodegradable substances pollute the environment? Is cotton biodegradable?
Q16. What is the significance of plastic in the health care industry?
Q17. How can we synthesise rayon?
Q18. State characteristics of acrylic fibres.
Q19. What do you understand by the term natural fibre? Give one example.
Q20. What is the 4R principle? Explain its significance.
Download the PDF to access answers to the Chemistry Worksheet for Class 8 Chemistry Chapter 3 Synthetic Fibres and Plastics Set – 1
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