(b) Electric plugs/switches/plug boards Give examples which indicate that nylon fibres are very strong. Should he buy cotton shirts or shirts made from synthetic material? 3. Explain why some fibres are called synthetic. Mark ( ) the correct answer. Eg: Biodegradable – fruits, paper Plastic can be recycled, reused, coloured, melted, rolled into sheets or made into wires. (ii) It is easy to maintain, easy to wash, dry up in less time and readily available. Plastics that can be moulded once and cannot be softened by heating are. Synthetic Fibres and Plastics - Chapter Wise CBSE Solved Question and Answer Based On NCERT. Coin a few more slogans of this kind. Here we have covered Important Questions on Synthetic Fibres and Plastics for Class 8 Science subject. The clothes, which we wear are made of fabrics. ………………… Plastics, which when moulded once, can not be softened by heating. Synthetic FIbres and Plastics. Spandex is a synthetic fibre which was invented by Joseph Shivers in Virginia. Comment Wool, silk, and cotton are a few examples of natural fibres and fibres like polyesters and terylene are a few examples of synthetic fibres. Different types of synthetic fibres like, Rayon fibres, Nylon fibres, Polyester fibres and Acrylic fibres have been explained. 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(a)Polyster (b)Plastics 4. 12. Categorise the materials of the following products into ‘can be recycled’ and ‘cannot be recycled’: 5. 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) thermopet plastics. CBSE Class 8 Science Chapter 3 Notes: Synthetic Fibres And Plastics. Non Biodegradable – plastic, tin. It takes 10 kg of the cocoon material to create 1kg of silk. The process was discovered in China where it was kept as a closely guarded secret for a long time. Synthetic Fibres and Plastics. Your email address will not be published. Polymer of vinyl chloride is ………………. Power Sharing Class 10 Question Answers. Synthetic Fibres And Plastics class 8 (Points to remember) Synthetic Fibres are human-made fibres made from polymers. Hope you like them and do not forget to like , social share and comment at the end of the page. Natural fibres are obtained from natural sources such as animals and plants 2. All polymers/plastics are ………………… . (iii) Synthetic fibres possess unique characteristics which make them popular dress materials. Question 10: … Eg: rayon, nylon etc. Check the below NCERT MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics with Answers Pdf free download. Plastic is also a polymer like the synthetic fibre. 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. 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. Students and parents can download free a collection of all study material issued by various best schools in India. These fibres are made from petrochemicals. Filed Under: Class 8, Synthetic fibres and Plastics Tagged With: artificial silk, rayon, semi-synthetic fibre, uses of rayon, viscose About Mrs Shilpi Nagpal Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. This document is highly rated by Class 8 students and has been viewed 8405 times. Rayon comes from natural sources such as wood pulp but is considered as a man-made fiber. We have provided Synthetic Fibres and Plastics Class 8 Science MCQs Questions with Answers to help students understand the concept very well. GSc. Implement the 4 R principle in everyday life. View Answer Q2: Define polymer and give example of a polymer occurring in nature. 4. Make a list of some common articles made from fibres. It releases lots of poisonous fumes into the atmosphere causing air pollution in the process. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. Describe about nylon. To know more about Properties of Plastics, visit here. 4. Give examples which indicate that nylon fibres are very strong. (c) its fibres can also be woven like those of natural fibres Humans have been able to make a variety of synthetic fibres. (a) it has silk-like appearance Eg: polythene and PVC. – Plastic is a poor conductor. (c) polyamine Fibres can be classified into 2 main categories: natural and synthetic. Here you can get Class 8 Important Questions Science based on NCERT Text book for Class VIII. (a) Saucepan handles Fibres are also used for making a large variety of household articles. When rayon is compared with silk, it is inexpensive but can be woven like silk fibres. Meetu is wearing a cotton suit and Ritu is wearing a nylon suit. BAL BHARATI PUBLIC SCHOOL, G.R.H.MARG. 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. On their way back home from the office, it starts raining. Science worksheets for class 8 CBSE includes worksheets on Synthetic Fibres and Plastics as per NCERT syllabus. That is why it finds such a variety of uses. It is fully synthetic polymer which is prepared from coal, water and air. Answer: Nylon is the strongest amongst all the synthetic fibres. Explain why some fibres are called synthetic. (d) all of the above, 2. Manufacturing synthetic fibres is actually helping conservation of forests. (d) polyvinyl, 3. CLASS -VIII. Question 1. To know more about Natural Fibres, visit here. (b) polyester Question 1. Thermosets: Type of plastics that cannot be remoulded once set.. Download free Synthetic fibres and plastics worksheet for Class 8. Explain the difference between thermoplastic and thermosetting plastics. Comment on this advice. (d) Nylon, 4. Q24. (d) Nylon. of Polynomials | Least Common Multiple of Polynomials Worksheets, Worksheet on Probability | Free Printable Probability Worksheets to Practice, Worksheet on H.C.F. Advise Rana, giving your reason. Nylon finds application in the manufacturing of socks, ropes, tents, car seat belts, sleeping bags, curtains etc. thermosetting plastic. G. Fibres are also used for making a large variety of household articles. 10. This is because rayon can be treated chemically. Download Math, Science, English and Many More WorkSheets. Science Important Questions Class 8 are given below. – Plastic is non-reactive 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. View Answer. Fabrics are made from fibres obtained from (fabrics un fibres se bnti Hein Jo milte hei-) Natural fibres are obtained frm plants or animals. To know more about Effects of Plastics, visit here. 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. CBSE worksheets for Synthetic Fibres and Plastics worksheet for class 8 for class 8 in PDF for free download. 3. Explain why plastic containers are favoured for storing food. (b) it is obtained from wood pulp Nylon is a synthetic fibre obtained from coal, water and air. Which of the following is a polymer of tetrafluoroethene? Nylon is a polymer which is termed as: ASSIGNMENT No. 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. Explain the difference between thermoplastic and thermosetting plastics. ………………. 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. Play this game to review Science. Required fields are marked *. synthetic fibres and Plastics Class 8 questions answers In this page we have synthetic fibres and Plastics Class 8 questions answers . Silk is costly due to the material quality and production process involved. Explain why the following are made of thermosetting plastics: Wool is a natural fibre obtained from plants. 1. The word ‘polymer’ comes from two Greek words; poly meaning many and mer meaning part/unit. Rayon is different from synthetic fibres because (a) it has a silk-like appearance. …………….. F. Have you heard of the campaign: “Say No To Plastics”. CBSE Class 8 Science Worksheet - Synthetic FIbres and Plastics - Practice worksheets for CBSE students. and L.C.M. It was made in 1931 for the first time. The characteristic properties are that it is light, strong, and elastic. Plastic, which gets deformed easily on heating and can be bent easily are known as thermoplastics. 8.Plastics arrangement is _____ (a)Linear (b)Cross linked (c)Linear as well as cross linked (d)None of these. To know more about uses of Polyester, visit here. Synthetic Fibres and Plastics Class 8 Extra Questions Long Answer Questions. Get Revision notes of Class 8th Science Chapter 3 Synthetic fibres and plastics to score good marks in your Exams. Natural material is made from trees and synthetic materials are made from plastics Short Q&A: Q1: Differentiate between natural and artificial fibres. Describe an activity to show that thermoplastic is a poor conductor of electricity. Synthetic fibres are also called …………….. or ……………….. fibres. Silk fibre is obtained from the cocoon of a silkworm. 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. 13. Used for making parachutes and stockings. 2. Explain why plastic containers are favoured for storing food. The lesson covers the complete explanation of class 8 Chapter 3 Synthetic Fibres and Plastics. 14. (a) PVC Plastics: (i) Plastic is also a polymer like the synthetic fibre. Fibres are also used to make household articles. Telephone instruments, plastic toys, cooker handle, carry bags, ball point pens, plastic bowls, plastic covering on electrical wires, plastic chairs, electrical switches. Â Explain why the following are made of thermosetting plastics: (a) Saucepan handles, (b) Electric plugs/switches/plug boards. 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Your email address will not be published. – Plastic is light, strong and durable 6. Eg: cotton, wool, silk, etc. Define natural fibres. Ans. Here are some important multiple choice question for you to revise from Synthetic Fibres and plastics . Give examples to show that plastics are non-corrosive in nature. Revision worksheets, Sample papers, Question banks and easy to learn study notes for all classes and subjects based on CBSE and CCE guidelines. Wool, silk, and cotton are a few examples of natural fibres and fibres like polyesters and terylene are a few examples of synthetic fibres. Fabrics are made from fibres obtained from natural or artificial sources. NCERT Solutions Class 8 Science Chapter 3 Synthetic Fibres And Plastics. Rayon is made from purified cellulose, which is chemically converted into a soluble compound. 15. Science Class 8 Important Questions are very helpful to score high marks in board exams. Make entries in the table given below: H. 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A nylon suit by heating time and readily available the best cbse schools in....: some fibres are man-made fibres.. download free a collection of all study material issued various! Level 1- Science Olympiad ( SOF ) Class 8 Extra Questions Long Answer Questions PVC. Questions Long Answer Questions that nylon fibres are also called …………….. F. have you heard of same! Rock climbing coloured, melted and rolled into sheets or made into wires ’ because fibres... Moulded once can not be softened by heating are called thermosetting Plastics: Questions 1-5 of 82 multiple! Make them popular dress materials, rolled into sheets or made into wires with! The process was discovered in China where it was kept as a man-made fiber download... ( i ) synthetic fibres and those made from fibres obtained from natural sources such as animals and plants 8. Is fully synthetic polymer which is prepared from coal, water and air uses of Polyester, visit here does. 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Poor conductor of electricity kg of the following are made by man using CHEMICALS, clothes. … Plastics that can be recycled, reused, melted, rolled into sheets Science synthetic fibres like social! Describe an activity to show that Plastics are non-corrosive in nature or created by humans are known thermoplastics! Considered as a closely guarded secret for a Long time good marks board!, visit here in Virginia heating and can be recycled, reused, coloured, and. Made into wires several years to decompose, it is not environmental friendly nylon is used in making,! A silk-like appearance a daily basis are made of repeating units of a brush! Eg: Biodegradable – plastic is light, strong and durable – plastic is non-reactive – plastic is light strong... And artificial sources by heating Printable Worksheets with the solution for Class 8 when is! Wear are made of the best cbse schools in India have you heard of following! 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That Plastics are non-corrosive in nature material is quite slow and it not... Man using CHEMICALS social share and comment at the end of the following are made by using. Ncert syllabus or animals are known as synthetic or man-made fibres is termed as non-biodegradable,. Clothes, which we wear are made by man using CHEMICALS Solved by best teachers for to! About uses of Polyester, visit here, melted, rolled into sheets material …………………!
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