The plastic used for making water pipes : The non-stick coating on frying pans is that of a plastic called: Which of these is thermosetting plastics? Fabrics made from which of the following fibres is most suitable as umbrella cloth? Answer. All questions and answers from the Living Science 2019 2020 Book of Class 8 Science Chapter 3 are provided here for you for free. d. 400 – 7000 nm Learn vocabulary, terms, and more with flashcards, games, and other study tools. 2. Deficiency of Vitamin B, can lead to indigesion and heart enlargement 3. Answer (c) nylon Nylon is synthetic whereas cotton, jute and silk are natural fibres. Question. Comment. answer choices . Which of the following is not a synthetic fibre? Which of the following is a synthetic polymer? Cloudflare Ray ID: 60fba7c35ab429ab Friction, Chapter 14. Crop Production and Management, Chapter 7. From the NCERT Exemplar Class 8 Science Unit 3, candidates can understand the level and type of questions that are asked in the exam. b. Natural fibres are 30 seconds . A full revision with question-answer and explanation in the form of MCQs based on latest CBSE Syllabus for new academic session 2020-2021. A. Jute B. Rayon C. Ramie D. Sisal Rayon is a synthetic fiber. Answer: Protein Question 3. Which type of fibres are manufactured in factories? Multiple Choice Questions Question. NCERT Class 8 Science Unit 3 is for Synthetic Fibres and Plastics. All of them. See Answer. (2) State the property of thermosetting plastics? Comments. Cotton, jute and wool are natural fibres. Answer: Jute fibre is obtained from jute plant by the following steps: Retting: Jute fibre is obtained from the stalks of the jute plant. Terylene is a polyester and nylon, a poyamide. Very Short Answer Type Questions. a. Styrofoam. Here we have given NCERT Exemplar Class 8 Science Chapter 3 Synthetic Fibres and Plastics. Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes! Answer. B) Nylon done clear. It is made without using any natural raw material. (A) Brilliance of diamond (B) Mirage formation (C) Optical fibre working (D) Rainbow formation. A blend of wool and kevlar, the synthetic fibre widely used in body armour, was lighter, cheaper and worked better in damp conditions than kevlar alone. 5. Answer: There is a disadvantage with synthetic fibers that synthetic fibers melt on heating. c. 300 – 2000 nm . Answer: Nylon, terylene, PET, acrylic, teflon, etc. What of the following is used for making stockings and parachutes? Terrycot. Question. Chapter 10. We have provided Synthetic Fibres and Plastics Class 8 Science MCQs Questions with Answers to help students understand the concept very well. Good conductor of electricity b. Wrinkle resistant c. High moisture absorbing capacity d. Poor elasticity please give me answers as soon as possible and if anyone give me correct answer I will mark him or her as Tags: Question 22 . s. Log in for more information. Give examples which indicate that nylon fibres are very strong. Answer the following questions in short: 1. The use of plastics can be reduced by using bags made of. 3 letter words MAT - NET - REP - … pick the synthetic fibre out of the following. Please enable Cookies and reload the page. _____ is the first fully synthetic fibre. Class 8 Science Chapter 3 MCQ (Multiple Choice Questions) of Synthetic Fibres and Plastic. 30 seconds . Cotton, jute and wool are natural fibres. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. Synthetic Fibres and Plastics Class 8 MCQs Questions with Answers. Explain why some fibres are called synthetic. wool. Chapter 11. Types of Synthetic Fibers. jute. Q. NCERT Exemplar Class 8 Science Chapter 3 Synthetic Fibres and Plastics. Â Rana wants to buy shirts for summer. ANSWER: (b) Photonic bandgap fiber. Conservation of Plants and Animals, Chapter 9. Top Answer. Which of the following is a bad conductor of electricity? • b. 4. A) Synthetic Fibres and Plastics Class 8 Extra Questions Science Chapter 3 Synthetic Fibres and Plastics Class 8 Extra Questions Very Short Answer Questions Question 1. More Notes on Pollution of Air and water. Along with it, the answer for each question has also been provided. Passage - 1 For thousands of years natural fibres were the only ones available for making fabrics. Confirmed by yumdrea [6/10/2016 7:55:00 PM], Rated good by yumdrea. Such fibres which are made from chemical substances are called synthetic fibres. Play this game to review Other. If the cloth catches fire it can be very disastrous. (a) Cotton (b) Nylon (c)Jute (d)Wool Answer. Log in. 3: (d) Polyster and cotton Non-function of lachrymal gland is an important symptom of deficiency of Vitamin A 2. Preview (22 questions) Show answers. 11) Which type of fiber optic cable has/have its/their core with the size of about 480 μm to 980 μm & made up of polymethylmethacrylate (PMMA)? We've arranged the synonyms in length order so that they are easier to find. You can refer to NCERT Solutions for Class 6 Science Chapter 3 Fibre to Fabric to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. NCERT Class 8 Science Unit 3 is for Synthetic Fibres and Plastics. Reaching the age of Adolescence  400 – 700 nm . 10. * State one disadvantage of using synthetic fibres for making clothes. NCERT Book for Class 8 Science Chapter 3 Synthetic Fibers and Plastics is available for reading or download on this page. —– synthetic ——-fibre on burning, smells like burning paper. (A) Rubber (B) Nylon-6 (C) Nylon-6, 6 (D) Nylon-6, 10. Report an issue . (Inme se konsa Synthetic fibre hei?) NCERT Exemplar solution for Class 8 Science Chapter 3 Synthetic Fibres and Plastics includes answers to all the questions provided in NCERT Exemplar book. Synthetic Fibres and Plastics Class 8 MCQs Questions with Answers. c. 300 – 2000 nm . … It is very important for the students to get well versed with this NCERT Exemplar as it will aid them in gaining complete knowledge of the concepts included in Class 8 Science Chapter 3 Synthetic Fibres and Plastics. Plain Weave Pattern. Fill in the blanks with appropriate words: 1. Wiki User Answered . 4. From the NCERT Exemplar Class 8 Science Unit 3, candidates can understand the level and type of questions that are asked in the exam. NCERT Exemplar Class 8 Science Unit 3 Synthetic Fibres and Plastics. More Exercises on Our Universe, Chapter 18. Explain the difference between thermoplastic and thermosetting plastics. 700 – 1200 nm . 1 Pick the synthetic fibre out of the following. Download CBSE Class 8 Science Synthetic Fibres and Plastics MCQs in pdf, Science chapter wise Multiple Choice Questions free, Chapter 3Synthetic Fibres and Plastics 1 A chain of small chemical units combined to form a large single unit is called ____a) Polymerb) Polyc) Polythene Log in. After selecting the correct or incorrect answers, you can see the right answers with reason behind them. Answer. Which synthetic fibre is called artificial silk? 1 Pick the synthetic fibre out of the following. • It is the first fully synthetic fibre. (a) Plastic (b) Copper (c) Steel (d) Brass. They are uncomfortable in those works. Join now. option - (a)nylon,(b)silk,(c)polyester,(d) Rayon. b. Polyvinyl chloride (PVC) c. Teflon. Which of the following is not a thermoplastic? 3. Answer. Answer: A chain of a particular chemical substance is called a polymer. a. Â Explain why the following are made of thermosetting plastics: (a) Saucepan handles, (b) Electric plugs/switches/plug boards. Choose the correct option in the following questions: Chapter 12. Start studying Chapter 4: Fibers. Question 1 . So clothes made of synthetic fibres are not comfortable to wear as they do not allow sweat to evaporate easily. Your IP: 45.55.196.194 SURVEY . Students who are in Class 8 or preparing for any exam which is based on Class 8 Science can refer NCERT Science Book for their preparation. For example, polyester, nylon, and acrylic etc. What of the following is used for making stockings and parachutes? Bakelite is a- synthetic polymer — plastic. These solutions for Synthetic Fibres And Plastics are extremely popular among Class 8 students for Science Synthetic Fibres And Plastics Solutions come handy for quickly completing your homework and preparing for exams. Which of the following is a synthetic fiber? NCERT Exemplar Class 8 Science Unit 3 Synthetic Fibres and Plastics. Vitamin C deficiency can lead to pain in the muscles 4. The fibres which are not natural and made by human beings are called synthetic fibres as they are manufactured by chemical processing of petrochemicals.These are made up of large units known as polymers. Synthetic fibres can either be completely synthetic or semisynthetic. […] Science MCQs for Class 8 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Name the plastic used to make bottles. Answer: a → 4, b → 3, c → 1, d → 2 Question 14: ‘Manufacturing synthetic fibres is actually helping conservation of forests’. D) Acrylic done clear. Solution: Thermoplastics are those plastics which can be re-molded on heating and can be bent easily. Acrylic is the synthetic fibre feels like wool and used as a substitute for wool. In contrast, nylon is a synthetic fibre obtained from plastics derived from petroleum. Want to see this answer and more? Check Answer and Solution for above Chemistry question - Tardigrade A full revision with question-answer and explanation in the form of MCQs based on latest CBSE Syllabus for new academic session 2020-2021. SURVEY . Electric wires are coated with— PVC ——. Which of the following is a bad conductor of electricity? (a) Bakelite (c) Wool (c) Nylon (d) Cotton. Acrylic is a synthetic fibre resembling wool used to knit sweaters, socks, and shawls.Polystyrene is also a synthetic fibre used for making protective packagings such as packing peanuts and CD and DVD cases, containers such as clamshells, lids, bottles, trays, tumblers, disposable cutlery and in the making of models.Therefore, option C and D both are correct. 8th grade. Join now. This answer has been confirmed as correct and helpful. Preview this quiz on Quizizz. 1. Cotton. Along with it, the answer for each question has also been provided. Answer – Yes, it is true that the manufacturing of synthetic fibres is actually helping in the conservation of forests because nature fibre is mainly derived from plants. (a) Wool (b) PET (c) Wood pulp (d) Silk Answer. (3) Give reason for the following (a) polyester is not suitable for summer (b) use of plastic today is a matter of concern (c) nylon derives its name from two cities (d) plastic is … Which synthetic fibre is called artificial silk? Examples of some synthetic fibres are rayon, nylon, etc. More Notes on Pollution of Air and water. Model Test Papers, Notes and Exercise on Crop and Production Management. Answer: (D) Thermoplastics. Explain why plastic containers are favoured for storing food. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Synthetic Fibres Extra Questions Short Answer Type Questions. Fibre to Fabric Class 6 MCQs Questions with Answers. (b) Nylon Is a synthetic fibre. It is not advisable to wear clothes made of synthetic fibre while working near fire because . Students can solve NCERT Class 8 Science Synthetic Fibres and Plastics MCQs Pdf with Answers to know […] 3. Explain the difference between thermoplastic and thermosetting plastics. Terrywool. ANSWER: (b) Plastic fiber optic cable Spandex. Which of the following is a synthetic fibre? 2: (c) Wool pulp Explanation: Rayon is obtained by the chemical treatment of wool pulp (which contains cellulose). Acrylic. Answer: Synthetic fibres have replaced natural fibres for most uses. Q. a. 8. Cotton is a soft, fluffy staple fibre that grows in a boll, or protective capsule, around the seeds of cotton plants. 5 points Which of the following is not a synthetic fibre Ask for details ; Follow Report by Noniamadhuri 29.11.2019 Log in to add a comment What do you need to know? Which of the following is not a synthetic fibre: - 17092260 We've arranged the synonyms in length order so that they are easier to find. Which of the following is purely a synthetic fibre? A. E. Answer the following questions in brief. Force and Pressure cotton . After harvesting, the stalks of jute plants are bundled together and soaked in water for about 20 days. Start studying Chapter 4: Fibers and Textiles. Tags: Question 2 . Â Explain why plastic containers are favoured for storing food. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. Free Question Bank for 8th Class Science Synthetic Fibers and Plastics Synthetic Fibres and Plastics. It is the first fully synthetic fibre. Explain why some fibres are called synthetic. Silk is purely a natural product obtained from silk worms. The following properties pertain to which fiber: high elongation,affected by sunlight, low absorbency, and high elastic recovery nylon This fiber was created as a wool substitute and is soft, warm, resilient and great for making lightweight blankets? It is ... All of the following are characteristics of synthetic fiber except. Synthetic Fibres and Plastics Class 8 MCQs Questions with Answers. Synonyms, crossword answers and other related words for SYNTHETIC FIBRE [nylon] We hope that the following list of synonyms for the word nylon will help you to finish your crossword today. Answer: Cotton Question 2. 103. Name a natural fibre. Performance & security by Cloudflare, Please complete the security check to access. Best Answer (i) terylene could be the synthetic fibre B which contains a large number of ester groups (ii) Rayon could be the synthetic fibre C which is made of polymer D containing glucose (iii) Nylon could be the fibre A which is chemically a polyamide is nylon. Ungraded . Wool. 9. MCQ Questions for Class 8 Science: Ch 3 Synthetic Fibres and Plastics We make a number of observations with different levels of flour added, and then get the following data: Fit a line to these points with linear regression and then draw both points and lines in a … Which of the following is not due to total internal reflection of light? Class 8 Synthetic Fibres Plastics Question answers, Bakelite was originally used for electrical and mechanical parts, Chapter 1. Answer: Fibre which is made by humans is called synthetic fibre. Infrared range for fiber optics . 3. Which of the following is not a synthetic fibre? DIRECTIONS: Read the passage (s) given be low and answer the questions that follow. The fibres which are obtained by blending natural and synthetic fibres are called (a) joint fibres (b) mixed fibres (c) real fibres (d) artificial fibres 2. 9. Plastic which cannot be melted and moulded repeatedly? To which kind of synthetic fibres does terylene belong? Which of the following is a natural fiber? 60 seconds . 2011-02-19 14:10:30 2011-02-19 14:10:30. You can refer to NCERT Solutions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. Synthetic fibres are man-made fibres that come from chemical resources. Also Read: Fibre to fabric. Terylene belongs to polyester kind of synthetic fibres. A. Acrylic. Now we have some fibres which are made from chemical substances. Q.1 Explain why some fibres are called synthetic. Question 3: What is the component of polyester?/p> They are manmade and have a linear arrangement and are used to make products like toys, combs and containers. C. Nylon. Name some artificial fibres. Question 1: Define synthetic fibre? Why is it not advisable to wear clothes made up of synthetic fibres in hot and humid weather? a. Manipal 2004: Which of the following is not a synthetic fibre? Deficiency of Vitamin D causes increased loss of Ca++ in urine Which of the statements given above are correct? There are 15 questions in this test with each question having around four answer choices. - 15864661 SURVEY . The use of plastics can be reduced by using bags made of —jute—- or— paper —- instead of polythene bags. d. 400 – 7000 nm Best Answer (i) terylene could be the synthetic fibre B which contains a large number of ester groups (ii) Rayon could be the synthetic fibre C which is made of polymer D containing glucose (iii) Nylon could be the fibre A which is chemically a polyamide is nylon. C) Wool done clear. Which of the following fibre is synthetic: (a) cotton (b) jute (c) nylon (d) silk. Tags: Question 17 . Synonyms, crossword answers and other related words for SYNTHETIC FIBRE [nylon] We hope that the following list of synonyms for the word nylon will help you to finish your crossword today. answer choices . Explain why plastic containers are favoured for storing food. Question-answers (Fibre to Fabric) Multiple Choice Questions 1. pick the synthetic fibre out of the following. Which is a synthetic fibre: nylon or Jute? After selecting the correct or incorrect answers, you can see the right answers with reason behind them. ... answer choices . B. Polyester. Answer: Some salient features of rayon are as follows: Rayon is … The synthetic polymer which can be used as a substitute for wool for making. 400 – 700 nm . Question 1: Write some salient features of rayon. Check out a sample Q&A here. A) Polyester done clear. Which of the following is used for making gunny … MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. It has resulted in reducing our dependency on natural fibres. 5. Infrared range for fiber optics . Synthetic fibres and plastics Worksheet-5 Â What are the properties of polythene? (a) Acrylic (b) Nylon (c) Polyester (d) Rayon. Silk. 6). Chapter 1. Alternating warp and weft threads. nylon. Which fabric is also known as artificial silk? Which of the following is a characteristic of a synthetic fibre? (c) Wool pulp Choose the correct option in the following questions: It is very easy to grow. All of the following are synthetic polymer fibers, except: Rayon. Synthetic fibres are of four types, namely: Rayon; Nylon; Polyester; Acrylic; Rayon (1) Why are natural fibres preferred over synthetic fibres? It was prepared from coal, water and air Science. You may need to download version 2.0 now from the Chrome Web Store. check_circle Expert Answer. Free PDF Download of CBSE Science Multiple Choice Questions for Class 8 with Answers Chapter 3 Synthetic Fibres and Plastics. 30 seconds . The elasticity of a type of synthetic fiber is expected to increase if flour is added. 2. Question 2: Define polymer? 700 – 1200 nm . They do not allow enough circulation of air either. Answer. 3 letter words MAT - NET - REP - … Fill in the blanks with appropriate words: 1. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. D. Rayon. It is made without using any natural raw material. The fibres which are obtained by blending natural and synthetic fibres are called (a) joint fibres (b) mixed fibres (c) real fibres (d) artificial fibres 2. A. a. Fibres that are purely synthetic like nylons, polyesters, acrylics are made from chemicals whereas semisynthetic fibres such as rayons are produced with the utilization of natural polymers as raw material. Class 8 Science Chapter 3 MCQ (Multiple Choice Questions) of Synthetic Fibres and Plastic. B) Nylon done clear. , combs and containers Wood pulp ( which contains cellulose ) see the right Answers with behind. 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The fibres are Free PDF Download was Prepared from coal, water and air we! 3 is for synthetic fibres and Plastics includes Answers to help students understand the concept very well working near because! Games, and more with flashcards, games, and other study....