Describe an activity to show that thermoplastic is a poor conductor of electricity. Mark ( ) the correct answer. Rayon is different from synthetic fibres because: Here we have covered Important Questions on Synthetic Fibres and Plastics for Class 8 Science subject. It releases lots of poisonous fumes into the atmosphere causing air pollution in the process. Prepared by teachers of the best CBSE schools in India. – Plastic is non-reactive Fabrics are made from fibres obtained from (fabrics un fibres se bnti Hein Jo milte hei-) The characteristic properties are that it is light, strong, and elastic. Synthetic Fibres and Plastics Class 8 Science NCERT Textbook Questions. It takes 10 kg of the cocoon material to create 1kg of silk. Here you can get Class 8 Important Questions Science based on NCERT Text book for Class VIII. Students and parents can download free a collection of all study material issued by various best schools in India. Your email address will not be published. Explain why some fibres are called synthetic. Your email address will not be published. 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 … (b) polyester 5. It is fully synthetic polymer which is prepared from coal, water and air. Fabrics are made from fibres obtained from natural or artificial sources. Get to the point NSO Level 1- Science Olympiad (SOF) Class 8 questions for your exams. Make entries in the table given below: H. Complete the table given below. All plastics do not have the same type of arrangement of units. Correct Option is : 2. 9._____ can be recycled, reused, melted and rolled into sheets. 1. Question 10: To know more about Properties of Plastics, visit here. 12. Synthetic fibres and plastics Worksheet-5  What are the properties of polythene? To know more about uses of Polyester, visit here. 5. Nylon is a polymer which is termed as: These fibres are made from petrochemicals. That is why it finds such a variety of uses. Nylon is a synthetic fibre obtained from coal, water and air. Answer: Some fibres are called synthetic fibres because they are made by man using chemicals. 13. To know more about Rayon and Nylon, visit here. Eg: bakelite and melamine. (a) it has silk-like appearance (d) Nylon, 4. 4. 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. (b) Electric plugs/switches/plug boards Natural material is made from trees and synthetic materials are made from plastics ……………….. (d) polyvinyl, 3. CBSE chapter-wise Printable Worksheets with the solution for class 8 Science chapter 03 Synthetic Fibres and Plastics for free download in PDF format. Ans. Write its uses and properties. Cotton polyester blends are more comfortable during hot/humid weather. 1. In some, it is linear whereas in others it is cross-linked. It was made in 1931 for the first time. View Answer Q2: Define polymer and give example of a polymer occurring in nature. ASSIGNMENT No. 7. Define natural fibres. These MCQ Questions on Synthetic Fibres and Plastics Class 8 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Hope you like them and do not forget to like , social share and comment at the end of the page. Plastic, which gets deformed easily on heating and can be bent easily are known as thermoplastics. (a)Polyster (b)Plastics CBSE Class 8 Science Worksheet - Synthetic FIbres and Plastics - Practice worksheets for CBSE students. Thermosets: Type of plastics that cannot be remoulded once set.. Download free Synthetic fibres and plastics worksheet for Class 8. (a) polyamide Plastics: (i) Plastic is also a polymer like the synthetic fibre. To know more about Natural Fibres, visit here. Q23. Question 1. The naturally occurring fibres that humans derive from plants or animals are known as natural fibres. (a) PVC 3. ‘Avoid plastics as far as possible’. CBSE Class 8 Science Worksheet - Synthetic Fibers And Plastics. Why is nylon used for making parachutes and ropes for rock climbing? Plastic is also a polymer like the synthetic fibre. Explain your answer. Revision worksheets, Sample papers, Question banks and easy to learn study notes for all classes and subjects based on CBSE and CCE guidelines. Power Sharing Class 10 Question Answers. Explain why plastic containers are favoured for storing food. 7.Synthetic fibres prepared using raw materials of petroleum origin called _____ (a)Petrochemicals (b)Polyster (c)Acrylic (d)None of these. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. of Polynomials | Least Common Multiple of Polynomials Worksheets, Worksheet on Probability | Free Printable Probability Worksheets to Practice, Worksheet on H.C.F. Non Biodegradable – plastic, tin. ‘Manufacturing synthetic fibres is actually helping conservation of forests.’ Comment. (i) Synthetic fibres are cheaper, stronger and durable than natural fibre. Plastics that can be moulded once and cannot be softened by heating are. 6. Natural Fibres A fibre is a thin thread of a natural or artificial substance, especially one that is used to make cloth or rope. Our notes of Chapter 3 Synthetic fibres and plastics are prepared by Maths experts in an easy to remember format, covering all syllabus of CBSE, KVPY, NTSE, Olympiads, NCERT & other Competitive Exams. Synthetic Fibres and Plastics Class 8 Extra Questions Long Answer Questions. Natural fibres are obtained frm plants or animals. Dec 21, 2020 - Synthetic Fibers and Plastics - PPT, Science, Class 8 Class 8 Notes | EduRev is made by best teachers of Class 8. Fibres are also used for making a large variety of household articles. synthetic fibres and Plastics Class 8 questions answers In this page we have synthetic fibres and Plastics Class 8 questions answers . 4. CLASS -VIII. 4. Required fields are marked *. Synthetic FIbres and Plastics. Free Question Bank for 8th Class Science Synthetic Fibers and Plastics Synthetic Fibres and Plastics It is used in making sarees, ties, etc. Here on AglaSem Schools, you can access to NCERT Book Solutions in free pdf for Science for Class 8 so that you can refer them as and when required. Rayon is made from used cellulose. . The word ‘polymer’ comes from two Greek words; poly meaning many and mer meaning part/unit. Fibres can be classified into 2 main categories: natural and synthetic. Give examples which indicate that nylon fibres are very strong. SA-I. Q24. (a) PVC When rayon is compared with silk, it is inexpensive but can be woven like silk fibres. The wool obtained from natural sources is quite expensive, whereas clothes made from acrylic are relatively cheap. Explain why the following are made of thermosetting plastics: Short Q&A: Q1: Differentiate between natural and artificial fibres. To know more about Biodegradable and Non-Biodegradable Materials, visit here. Synthetic Fibres and Plastics: Questions 1-5 of 82. We have provided Synthetic Fibres and Plastics Class 8 Science MCQs Questions with Answers to help students understand the concept very well. 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Silk fibre is obtained from the cocoon of a silkworm. Plastic takes several years to decompose, it is not environmental friendly. CBSE worksheets for Synthetic Fibres and Plastics worksheet for class 8 for class 8 in PDF for free download. NCERT Solutions Class 8 Science Chapter 3 Synthetic Fibres And Plastics. (c) Bakelite  Explain why the following are made of thermosetting plastics: (a) Saucepan handles, (b) Electric plugs/switches/plug boards. Advise Rana, giving your reason. Play this game to review Science. Science worksheets for class 8 CBSE includes worksheets on Synthetic Fibres and Plastics as per NCERT syllabus. Why plastic can be molded into any shape and size and why is it advised to avoid the use of plastics as far as possible, also suggest some methods to limit its consumption (5) Answer the following questions in short: 1. 8. thermoplastics. 14. 4. One has been done for you: Notify me of follow-up comments by email. Eg: cotton, wool, silk, etc. This is because rayon can be treated chemically. BAL BHARATI PUBLIC SCHOOL, G.R.H.MARG.  Explain why plastic containers are favoured for storing food. 10. 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? Grade 8 Chapter 3 Synthetic fibres and plastics | ncertsciencesite CHAPTER 3 SYNTHETIC FIBRES AND PLASTICS Fabrics are made from fibres obtained from natural or artificial sources. Class 8 Science Synthetic Fibres and Plastics Important MCQs. Rana wants to buy shirts for summer. Should he buy cotton shirts or shirts made from synthetic material? Question 2. 2. Synthetic Fibres And Plastics class 8 (Points to remember) Synthetic Fibres are human-made fibres made from polymers. Meetu is wearing a cotton suit and Ritu is wearing a nylon suit. Clothes that we wear on a daily basis are made of fabrics. Explain why some fibres are called synthetic. (b) Teflon Which of the following is a thermosetting plastic? …………….. F. Have you heard of the campaign: “Say No To Plastics”. Synthetic fibres are synthesised from raw material called ………………… . What are synthetic fibres and mention the importance of synthetic polymers in our life (5) 10. Students can get how to tackle different questions easily by solving the Extra Questions for Class 8 Science Question bank on a regular basis. A polymer is a substance composed of many repeated similar subunits. 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. Which of the following is a polymer of tetrafluoroethene? ………………. Comment 2. (c) polyamine of Polynomials | GCF and LCM of Polynomials Worksheets, Worksheet on L.C.M. and L.C.M. 8.Plastics arrangement is _____ (a)Linear (b)Cross linked (c)Linear as well as cross linked (d)None of these. Humans have been able to make a variety of synthetic fibres. Manufacturing synthetic fibres is actually helping conservation of forests. Explain why some fibres are called synthetic. 2. To know more about Synthetic Fibre, visit here. CBSE Class 8 Science Chapter 3 Notes: Synthetic Fibres And Plastics. Clothes that we wear on a daily basis are made of fabrics. Try to separate them into those made from natural fibres and those made from artificial fibres.  Rana wants to buy shirts for summer.