To which kind of synthetic fibres does terylene belong? Explain the difference between thermoplastic and thermosetting plastics. Name the plastic used to make bottles. 30 seconds . Which of the following is a natural fiber? Spandex. Reproduction in Animal 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. Q. Join now. (c) Wool pulp (b) Nylon Is a synthetic fibre. Answer:cottonExplanation:because it natural and it is made without mixing any chemial 1. Log in. 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: Jute fibre is obtained from jute plant by the following steps: Retting: Jute fibre is obtained from the stalks of the jute plant. Terylene and nylon are synthetic fibres produced by a process of polymerisation. Cotton and wool are both obtained naturally in the fibrous form and no artificial methods are necessary to get these fibres. Want to see the step-by-step answer? Which of the following is not a synthetic fibre? SURVEY . NCERT Book for Class 8 Science Chapter 3 Synthetic Fibers and Plastics is available for reading or download on this page. Answer: Cotton Question 2. Synthetic fibres are generally hydrophobic, i.e., they repel moisture (e.g., sweat) and do not absorb it. 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. Name the basic component of animal fibres. Log in. 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. Question. It is not advisable to wear clothes made of synthetic fibre while working near fire because . Chemical Effects of Electric Current, Chapter 17. 4. Which type of fibres are manufactured in factories? Deficiency of Vitamin D causes increased loss of Ca++ in urine Which of the statements given above are correct? Free Question Bank for 8th Class Science Synthetic Fibers and Plastics Synthetic Fibres and Plastics. 700 – 1200 nm . Silk is purely a natural product obtained from silk worms. 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. Synthetic fibres are man-made fibres that come from chemical resources. Question 1 . 1. It is very easy to grow. Synthetic Fibres and Plastics Class 8 MCQs Questions with Answers. 1. a. Which of the following is a synthetic polymer? Along with it, the answer for each question has also been provided. 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 Manipal 2004: Which of the following is not a synthetic fibre? E. Answer the following questions in brief. It was prepared from coal, water and air Which of the following is not a synthetic fibre? (A) Brilliance of diamond (B) Mirage formation (C) Optical fibre working (D) Rainbow formation. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Class 8 Science Chapter 3 MCQ (Multiple Choice Questions) of Synthetic Fibres and Plastic. Answer. Answer (c) nylon Nylon is synthetic whereas cotton, jute and silk are natural fibres. Multiple Choice Questions Question. Question. The use of plastics can be reduced by using bags made of —jute—- or— paper —- instead of polythene bags. Which of the following is purely a synthetic fibre? 9. 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. Bakelite is a- synthetic polymer — plastic. 30 seconds . Another way to prevent getting this page in the future is to use Privacy Pass. Answer. Cellulose occurs in … Secondary School. Which of the following is a synthetic fibre? Polyester. 2. It is the first fully synthetic fibre. Vitamin C deficiency can lead to pain in the muscles 4. Deficiency of Vitamin B, can lead to indigesion and heart enlargement 3. Examples of some synthetic fibres are rayon, nylon, etc. 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? Plastic fiber optic cable c. Plastic clad silica fiber optic cable d. All of the above. Class 8 Science Chapter 3 MCQ (Multiple Choice Questions) of Synthetic Fibres and Plastic. Which of the following is not a man-made material? Â Explain why plastic containers are favoured for storing food. 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. (2) State the property of thermosetting plastics? You may need to download version 2.0 now from the Chrome Web Store. 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)? Which of the following is a synthetic fiber? 5. Force and Pressure We've arranged the synonyms in length order so that they are easier to find. Also Read: Fibre to fabric. 3. D) Acrylic done clear. Question-answers (Fibre to Fabric) Multiple Choice Questions 1. Fill in the blanks with appropriate words: 1. 5. Answer: (D) Incident at an angle greater than the critical angle. Performance & security by Cloudflare, Please complete the security check to access. (1) Why are natural fibres preferred over synthetic fibres? Ungraded . A. Types of Synthetic Fibers. It was prepared from coal, water and air In contrast, nylon is a synthetic fibre obtained from plastics derived from petroleum. 3 letter words MAT - NET - REP - … Acrylic is the synthetic fibre feels like wool and used as a substitute for wool. See Answer. jute. Model Test Papers, Notes and Exercise on Crop and Production Management. 8. Friction, Chapter 14. Choose the correct option in the following questions: Learn vocabulary, terms, and more with flashcards, games, and other study tools. synthetic fibres class test DRAFT. Terylene. Which of the following is used for making gunny bags? It is ... All of the following are characteristics of synthetic fiber except. C. Nylon. Chapter 11. Silk. Terrywool. Synthetic fibers have the following advantages. Infrared range for fiber optics . 3 letter words MAT - NET - REP - … Tags: Question 17 . • Answer. Want to see this answer and more? We have provided Synthetic Fibres and Plastics Class 8 Science MCQs Questions with Answers to help students understand the concept very well. 8th grade. Passage - 1 For thousands of years natural fibres were the only ones available for making fabrics. Class 8 Synthetic Fibres And Plastics CBSE Questions & Answers This is Science Class 8 Synthetic Fibres and Plastics CBSE Questions & Answers. Answer: Some salient features of rayon are as follows: Rayon is … (b) Nylon Is a synthetic fibre. Cotton, jute and wool are natural fibres. A) Polyester done clear. Such fibres which are made from chemical substances are called synthetic fibres. Which of the following is a bad conductor of electricity? Play this game to review Other. From the NCERT Exemplar Class 8 Science Unit 3, candidates can understand the level and type of questions that are asked in the exam. Wiki User Answered . b. Polyvinyl chloride (PVC) c. Teflon. The plastic is first melted at high temperature and then forced out through a device with many holes in it known as a spinneret. Terylene belongs to polyester kind of synthetic fibres. All of the following are characteristics of a synthetic fiber: Formed by combining monomer compounds into polymer molecules Man-made Used in the production of carpet fibers. ... answer choices . Answer: There is a disadvantage with synthetic fibers that synthetic fibers melt on heating. a. A full revision with question-answer and explanation in the form of MCQs based on latest CBSE Syllabus for new academic session 2020-2021. Top Answer. Name a natural fibre. Answer: (D) Rainbow formation. Which of the following is Synthetic fibre? 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? 2. 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. Which of the following is a bad conductor of electricity? Consider the following statements: 1. Question 1: Write some salient features of rayon. Conservation of Plants and Animals, Chapter 9. Start studying Chapter 4: Fibers. b. Comments. State one disadvantage of using synthetic fibres for making clothes. 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