Science Important Questions Class 8 are given below. Q24. Synthetic Fibres and Plastics Class 8 Science NCERT Textbook Questions. Polymers: Are large molecules formed by the union of monomers. Should the handle and bristles of a tooth brush be made of the same material? (c) its fibres can also be woven like those of natural fibres It is used in making sarees, ties, etc. 5. View Answer Q2: Define polymer and give example of a polymer occurring in nature. Plastics, which when moulded once, can not be softened by heating. 5. 13. These fibres are made from petrochemicals. Plastic takes several years to decompose, it is not environmental friendly. Class 8 Chapter 3 Synthetic Fibres and Plastics includes different topics like synthetic fibres meaning, types of synthetic fibres, their characteristics, plastics, benefits of plastics, use of plastic as a choice, hazards of plastic on the environment, and exposure to … 4. Free PDF Download - Best collection of CBSE topper Notes, Important Questions, Sample papers and NCERT Solutions for CBSE Class 8 Science Synthetic Fibres and Plastics. (d) Nylon, 4. 8th Science chapter 03 Synthetic Fibres and Plastics have many topics. Advise Rana, giving your reason. 2. Answer: Some fibres are called synthetic fibres because they are made by man using chemicals. 9. Eg: rayon, nylon etc. Explain why the following are made of thermosetting plastics: Comment NCERT Solutions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics All the NCERT solutions are framed in a systematic manner, according to the latest CBSE Class 8 science syllabus (2020-21). 4. Rayon is made from purified cellulose, which is chemically converted into a soluble compound. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. Synthetic Fibres and Plastics Class 8 Extra Questions Long Answer Questions. For manufacturing synthetic fibres cutting of trees or killing of animals is not required … A. Used for making parachutes and stockings. BAL BHARATI PUBLIC SCHOOL, G.R.H.MARG. (a) it has silk-like appearance Dec 21, 2020 - Synthetic Fibers and Plastics - PPT, Science, Class 8 Class 8 Notes | EduRev is made by best teachers of Class 8. Polyester is made of repeating units of a chemical called an ester. Eg: Biodegradable – fruits, paper Which of the following is a thermosetting plastic? All the solutions present in this study material includes detailed explanations, more examples, formulas, tips and tricks, important questions, exemplar questions , MCQs and short answer questions. and L.C.M. Solving the Synthetic Fibres and Plastics Multiple Choice Questions of Class 8 Science Chapter 3 MCQ can be of extreme help as you will be aware of all the concepts. View Answer. 11. Synthetic fibres are more durable and affordable which makes them more popular than natural fibres. and L.C.M. Natural fibres are obtained from natural sources such as animals and plants of Polynomials | GCF and LCM of Polynomials Worksheets, Worksheet on L.C.M. (b) Teflon All these topics are inc… Rayon comes from natural sources such as wood pulp but is considered as a man-made fiber. Fibres are also used to make household articles. Here we have covered Important Questions on Synthetic Fibres and Plastics for Class 8 Science subject. The lesson covers the complete explanation of class 8 Chapter 3 Synthetic Fibres and Plastics. Synthetic Fibres and Plastics. It is best suited for the making of dress materials as it is crisp and is easy to wash. Acrylic is a synthetic fibre that resembles wool. All plastics do not have the same type of arrangement of units. Give examples to show that plastics are non-corrosive in nature. CLASS -VIII. …………….. F. Have you heard of the campaign: “Say No To Plastics”. The naturally occurring fibres that humans derive from plants or animals are known as natural fibres. Explain why some fibres are called synthetic. 14. Answer the following questions in short: 1. Plastic is also a polymer like the synthetic fibre. 6. synthetic fibres and Plastics Class 8 questions answers In this page we have synthetic fibres and Plastics Class 8 questions answers . ………………. 2. Rana wants to buy shirts for summer. (d) all of the above, 2. Explain why some fibres are called synthetic. Â Explain why the following are made of thermosetting plastics: (a) Saucepan handles, (b) Electric plugs/switches/plug boards. Â Explain why plastic containers are favoured for storing food. Play this game to review Science. Cotton polyester blends are more comfortable during hot/humid weather. Nylon is a polymer which is termed as: (b) polyester Rayon is different from synthetic fibres because (a) it has a silk-like appearance. Synthetic FIbres and Plastics. Fabrics are made of fibres which are obtained from natural and artificial sources. Fabrics are made of fibres which are obtained from natural and artificial sources. Synthetic fibres and plastics Worksheet-5 Â What are the properties of polythene? 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