Bakelite is a- synthetic polymer — plastic. (a) Synthetic fibres catch fire very easily. 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. State one disadvantage of using synthetic fibres for making clothes. 3. Which of the following is not a synthetic fibre? D. Rayon. Another way to prevent getting this page in the future is to use Privacy Pass. MCQ Questions for Class 8 Science: Ch 3 Synthetic Fibres and Plastics Check Answer and Solution for above Chemistry question - Tardigrade 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. Which of the following is a natural fiber? Infrared range for fiber optics . answer choices . Want to see this answer and more? Consider the following statements: 1. ANSWER: (b) Plastic fiber optic cable For example, polyester, nylon, and acrylic etc. 3: (d) Polyster and cotton synthetic fibres class test DRAFT. (c) Wool pulp nylon. Also Read: Fibre to fabric. s. Log in for more information. A full revision with question-answer and explanation in the form of MCQs based on latest CBSE Syllabus for new academic session 2020-2021. 1 Pick the synthetic fibre out of the following. Which of the following is Synthetic fibre? —– synthetic ——-fibre on burning, smells like burning paper. In contrast, nylon is a synthetic fibre obtained from plastics derived from petroleum. From the NCERT Exemplar Class 8 Science Unit 3, candidates can understand the level and type of questions that are asked in the exam. Natural fibres are (Inme se konsa Synthetic fibre hei?) Deficiency of Vitamin D causes increased loss of Ca++ in urine Which of the statements given above are correct? 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. Q.1 Explain why some fibres are called synthetic. Answer: Some salient features of rayon are as follows: Rayon is … 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 Silk is purely a natural product obtained from silk worms. Science MCQs for Class 8 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Force and Pressure Why is it not advisable to wear clothes made up of synthetic fibres in hot and humid weather? Synthetic fibers have the following advantages. Along with it, the answer for each question has also been provided. […] Silk. Science. To which kind of synthetic fibres does terylene belong? Very Short Answer Type Questions. Multiple Choice Questions Question. 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. • 9. This answer has been confirmed as correct and helpful. Free PDF Download of CBSE Science Multiple Choice Questions for Class 8 with Answers Chapter 3 Synthetic Fibres and Plastics. Which of the following is not a thermoplastic? Question: Explain how jute is obtained from the jute plant. 3. Answer. Which of the following is a characteristic of a synthetic fibre? Explain why some fibres are called synthetic. 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. The plastic is first melted at high temperature and then forced out through a device with many holes in it known as a spinneret. Join now. Which synthetic fibre is called artificial silk? Explain why plastic containers are favoured for storing food. We've arranged the synonyms in length order so that they are easier to find. B) Nylon done clear. Answer (c) nylon Nylon is synthetic whereas cotton, jute and silk are natural fibres. Polyester. Choose the correct option in the following questions: (A) Rubber (B) Nylon-6 (C) Nylon-6, 6 (D) Nylon-6, 10. Answer: (D) Rainbow formation. 30 seconds . Which of the following is not a synthetic fibre: - 17092260 Answer:cottonExplanation:because it natural and it is made without mixing any chemial 1. Free Question Bank for 8th Class Science Synthetic Fibers and Plastics Synthetic Fibres and Plastics. c. 300 – 2000 nm . a. Rayon is a man-made material which consists of purified cellulose in the form of long fibres. Synthetic Fibres Extra Questions Short Answer Type Questions. 5. Crop Production and Management, Chapter 7. Acrylic. Â Rana wants to buy shirts for summer. Synthetic fibres are man-made fibres that come from chemical resources. Fill in the blanks with appropriate words: 1. Confirmed by yumdrea [6/10/2016 7:55:00 PM], Rated good by yumdrea. pick the synthetic fibre out of the following. Tags: Question 2 . We've arranged the synonyms in length order so that they are easier to find. Answer. (b) Nylon Is a synthetic fibre. Answer: There is a disadvantage with synthetic fibers that synthetic fibers melt on heating. Tags: Question 17 . 8th grade. From the NCERT Exemplar Class 8 Science Unit 3, candidates can understand the level and type of questions that are asked in the exam. Which of the following is a synthetic fibre? Wool. Which type of fibres are manufactured in factories? Answer. answer choices . Friction, Chapter 14. E. Answer the following questions in brief. Please enable Cookies and reload the page. 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? 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. Answer. NCERT Exemplar Class 8 Science Unit 3 Synthetic Fibres and Plastics. 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 purely a synthetic fibre? Question. Which is a synthetic fibre: nylon or Jute? (2) State the property of thermosetting plastics? It is made without using any natural raw material. 3. Chapter 11. Such fibres which are made from chemical substances are called synthetic fibres. b. (A) Brilliance of diamond (B) Mirage formation (C) Optical fibre working (D) Rainbow formation. Top Answer. A) wool. Class 8 Synthetic Fibres Plastics Question answers, Bakelite was originally used for electrical and mechanical parts, Chapter 1. They are uncomfortable in those works. Acrylic is the synthetic fibre feels like wool and used as a substitute for wool. Which simple unit forms polymer? a. 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. 700 – 1200 nm . They are manmade and have a linear arrangement and are used to make products like toys, combs and containers. Cotton, jute and wool are natural fibres. 2. 3. Play this game to review Other. Question 2: Define polymer? 5. The fabric melts and sticks to the body of the person wearing it. Which of the following is not a man-made material? Check out a sample Q&A here. This means cutting a lot of trees, which leads to deforestation. Vitamin C deficiency can lead to pain in the muscles 4. 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. Synthetic Fibres and Plastics Class 8 MCQs Questions with Answers. Synthetic Fibres and Plastics Class 8 MCQs Questions with Answers. Ungraded . Name a natural fibre. 2. Infrared range for fiber optics . Question 1 . 5. SURVEY . More Exercises on Our Universe, Chapter 18. 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. It is the first fully synthetic fibre. After selecting the correct or incorrect answers, you can see the right answers with reason behind them. A. NCERT Class 8 Science Unit 3 is for Synthetic Fibres and Plastics. - 15864661 Class 8 Science Chapter 3 MCQ (Multiple Choice Questions) of Synthetic Fibres and Plastic. 8. cotton . 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? (b) Nylon Is a synthetic fibre. Give examples which indicate that nylon fibres are very strong. answer choices . Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes! 30 seconds . Manipal 2004: Which of the following is not a synthetic fibre? Electric wires are coated with— PVC ——. 2. 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. Fibre to Fabric Class 6 MCQs Questions with Answers. Rayon. Preview this quiz on Quizizz. Students can solve NCERT Class 8 Science Synthetic Fibres and Plastics MCQs Pdf with Answers to know […] 60 seconds . 6). Which of the following is a synthetic fiber? All of them. DIRECTIONS: Read the passage (s) given be low and answer the questions that follow. Answer: Protein Question 3. Answer. 1 Pick the synthetic fibre out of the following. 5. Types of Synthetic Fibers. Which of the following is used for making gunny … Cotton, jute and wool are natural fibres. Answer: Fibre which is made by humans is called synthetic fibre. 2: (c) Wool pulp Explanation: Rayon is obtained by the chemical treatment of wool pulp (which contains cellulose). Â Explain why plastic containers are favoured for storing food. Name the basic component of animal fibres. The fibres are then separated from the … Answer: Jute fibre is obtained from jute plant by the following steps: Retting: Jute fibre is obtained from the stalks of the jute plant. More Notes on Pollution of Air and water. B) Nylon done clear. A) Polyester done clear. It is ... All of the following are characteristics of synthetic fiber except. 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. Fabrics made from which of the following fibres is most suitable as umbrella cloth? d. 400 – 7000 nm 1. NCERT Exemplar solution for Class 8 Science Chapter 3 Synthetic Fibres and Plastics includes answers to all the questions provided in NCERT Exemplar book. (a) Cotton (b) Nylon (c)Jute (d)Wool Answer. See Answer. Start studying Chapter 4: Fibers. Comment. Start studying Chapter 4: Fibers and Textiles. 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. Model Test Papers, Notes and Exercise on Crop and Production Management. c. 300 – 2000 nm . Cotton is a soft, fluffy staple fibre that grows in a boll, or protective capsule, around the seeds of cotton plants. The synthetic polymer which can be used as a substitute for wool for making. check_circle Expert Answer. 3 letter words MAT - NET - REP - … Answer: A chain of a particular chemical substance is called a polymer. Which fabric is also known as artificial silk? Terrycot. Log in. Terylene. Give examples which indicate that nylon fibres are very strong. Answer: (D) Incident at an angle greater than the critical angle. 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. Answer: Cotton Question 2. NCERT Book for Class 8 Science Chapter 3 Synthetic Fibers and Plastics is available for reading or download on this page. A) Rayon done clear. Synthetic fibres are of four types, namely: Rayon; Nylon; Polyester; Acrylic; Rayon Synthetic fibres can either be completely synthetic or semisynthetic. Terylene and nylon are synthetic fibres produced by a process of polymerisation. Plastic fiber optic cable c. Plastic clad silica fiber optic cable d. All of the above. There are 15 questions in this test with each question having around four answer choices. Want to see the step-by-step answer? 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 The use of plastics can be reduced by using bags made of —jute—- or— paper —- instead of polythene bags. Tags: Question 22 . We have provided Synthetic Fibres and Plastics Class 8 Science MCQs Questions with Answers to help students understand the concept very well. (a) Cotton (b) Nylon (c)Jute (d)Wool Answer. What of the following is used for making stockings and parachutes? Here we have given NCERT Exemplar Class 8 Science Chapter 3 Synthetic Fibres and Plastics. All questions and answers from the Living Science 2019 2020 Book of Class 8 Science Chapter 3 are provided here for you for free. Synthetic fibres and plastics Worksheet-5 Â What are the properties of polythene? Question. D) Acrylic done clear. Glass fiber optic cable b. Chemical Effects of Electric Current, Chapter 17. Class 8 Synthetic Fibres And Plastics CBSE Questions & Answers This is Science Class 8 Synthetic Fibres and Plastics CBSE Questions & Answers. Are very strong pulp which of the following is not a synthetic fibre answer the following reducing. Fast as 30 minutes urine which of the following is not advisable to wear clothes made of synthetic fiber.. C. Ramie D. Sisal Rayon is a source of Rayon • Your IP: 45.55.196.194 Performance... Gives you temporary access to the web property nylon is a synthetic fibre feels Wool. Out of the statements given above are correct fibres that come from chemical substances are called synthetic Syllabus for academic! Brilliance of diamond ( b ) nylon ( c ) polyester ( d ) Cotton on,! 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