Which of the following is a synthetic fiber? It is ... All of the following are characteristics of synthetic fiber except. 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. pick the synthetic fibre out of the following. 3. The elasticity of a type of synthetic fiber is expected to increase if flour is added. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. a. (b) Synthetic fibres do not absorb sweat. Fabrics made from which of the following fibres is most suitable as umbrella cloth? 1 Pick the synthetic fibre out of the following. c. 300 – 2000 nm . 400 – 700 nm . NCERT Exemplar Class 8 Science Unit 3 Synthetic Fibres and Plastics. Reproduction in Animal Answer:cottonExplanation:because it natural and it is made without mixing any chemial 1. 3. d. 400 – 7000 nm Answer (c) nylon Nylon is synthetic whereas cotton, jute and silk are natural fibres. check_circle Expert Answer. d. 400 – 7000 nm Join now. Cotton is a soft, fluffy staple fibre that grows in a boll, or protective capsule, around the seeds of cotton plants. Bakelite is a- synthetic polymer — plastic. … 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. Want to see this answer and more? After selecting the correct or incorrect answers, you can see the right answers with reason behind them. 1. Tags: Question 17 . (2) State the property of thermosetting plastics? Question 3: What is the component of polyester?/p> 5. NCERT Book for Class 8 Science Chapter 3 Synthetic Fibers and Plastics is available for reading or download on this page. C) Wool done clear. Tags: Question 2 . Terylene belongs to polyester kind of synthetic fibres. _____ is the first fully synthetic fibre. Explain why plastic containers are favoured for storing food. So clothes made of synthetic fibres are not comfortable to wear as they do not allow sweat to evaporate easily. Here we have given NCERT Exemplar Class 8 Science Chapter 3 Synthetic Fibres and Plastics. Secondary School. Which of the following fibre is synthetic: (a) cotton (b) jute (c) nylon (d) silk. answer choices . Choose the correct option in the following questions: Which of the following is not a synthetic fibre: - 17092260 Answer: (D) Thermoplastics. Friction, Chapter 14. Force and Pressure Chapter 12. Consider the following statements: 1. (A) Rubber (B) Nylon-6 (C) Nylon-6, 6 (D) Nylon-6, 10. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Start studying Chapter 4: Fibers and Textiles. Confirmed by yumdrea [6/10/2016 7:55:00 PM], Rated good by yumdrea. Alternating warp and weft threads. They are manmade and have a linear arrangement and are used to make products like toys, combs and containers. We have provided Synthetic Fibres and Plastics Class 8 Science MCQs Questions with Answers to help students understand the concept very well. It has resulted in reducing our dependency on natural fibres. Synthetic Fibres and Plastics Class 8 MCQs Questions with Answers. 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 … Question: Explain how jute is obtained from the jute plant. Answer: A chain of a particular chemical substance is called a polymer. Non-function of lachrymal gland is an important symptom of deficiency of Vitamin A 2. 30 seconds . Tags: Question 22 . • Your IP: 45.55.196.194 A. (a) Cotton (b) Nylon (c)Jute (d)Wool Answer. Chemical Effects of Electric Current, Chapter 17. 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. It is made without using any natural raw material. (A) Brilliance of diamond (B) Mirage formation (C) Optical fibre working (D) Rainbow formation. 3. Answer. Join now. (a) Cotton (b) Nylon (c)Jute (d)Wool Answer. Â Rana wants to buy shirts for summer. SURVEY . The synthetic polymer which can be used as a substitute for wool for making. 3. Answer: Some salient features of rayon are as follows: Rayon is … Synthetic Fibres Extra Questions Short Answer Type Questions. Question 2: Define polymer? A) Rayon done clear. Explain why some fibres are called synthetic. option - (a)nylon,(b)silk,(c)polyester,(d) Rayon. Give examples which indicate that nylon fibres are very strong. DIRECTIONS: Read the passage (s) given be low and answer the questions that follow. […] Wool. nylon. 5. Question. 4. What of the following is used for making stockings and parachutes? Name a natural fibre. 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. Synthetic fibres are of four types, namely: Rayon; Nylon; Polyester; Acrylic; Rayon 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. Model Test Papers, Notes and Exercise on Crop and Production Management. All questions and answers from the Living Science 2019 2020 Book of Class 8 Science Chapter 3 are provided here for you for free. 4. Start studying Chapter 4: Fibers. Answer: Synthetic fibres have replaced natural fibres for most uses. Explain why some fibres are called synthetic. 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? b. 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 ... answer choices . Play this game to review Other. Along with it, the answer for each question has also been provided. Chapter 11. Cotton. Answer. Answer: There is a disadvantage with synthetic fibers that synthetic fibers melt on heating. 3 letter words MAT - NET - REP - … (a) Plastic (b) Copper (c) Steel (d) Brass. Terylene and nylon are synthetic fibres produced by a process of polymerisation. 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. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Â Explain why the following are made of thermosetting plastics: (a) Saucepan handles, (b) Electric plugs/switches/plug boards. Sol. 60 seconds . 4. Wiki User Answered . It is made without using any natural raw material. Acrylic is the synthetic fibre feels like wool and used as a substitute for wool. synthetic fibres class test DRAFT. All of them. SURVEY . SURVEY . Synthetic fibres can either be completely synthetic or semisynthetic. Which of the following is not a thermoplastic? From the NCERT Exemplar Class 8 Science Unit 3, candidates can understand the level and type of questions that are asked in the exam. Please enable Cookies and reload the page. Vitamin C deficiency can lead to pain in the muscles 4. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. (a) Wool (b) PET (c) Wood pulp (d) Silk Answer. answer choices . Answer: The fibres which are made from chemical substances or which are not obtained from the plant and animal sources are called synthetic fibres. (a) Acrylic (b) Nylon (c) Polyester (d) Rayon. Fill in the blanks with appropriate words: 1. Answer: Protein Question 3. This answer has been confirmed as correct and helpful. Q. Cotton, jute and wool are natural fibres. Which synthetic fibre is called artificial silk? Answer: (D) Incident at an angle greater than the critical angle. 700 – 1200 nm . Check out a sample Q&A here. Polyester. Which of the following is purely a synthetic fibre? 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. (a) Synthetic fibres catch fire very easily. C. Nylon. 2. * Fibre to Fabric Class 6 MCQs Questions with Answers. 2. After harvesting, the stalks of jute plants are bundled together and soaked in water for about 20 days. Synthetic fibres are man-made fibres that come from chemical resources. Answer: (D) Rainbow formation. Question. Silk is purely a natural product obtained from silk worms. This means cutting a lot of trees, which leads to deforestation. They are uncomfortable in those works. (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 … jute. Question-answers (Fibre to Fabric) Multiple Choice Questions 1. Infrared range for fiber optics . Class 8 Science Chapter 3 MCQ (Multiple Choice Questions) of Synthetic Fibres and Plastic. Which of the following is used for making gunny bags? B. Polyester. Comments. Which of the following is a synthetic polymer? Acrylic. Answer. b. 5. 9. answer choices . In contrast, nylon is a synthetic fibre obtained from plastics derived from petroleum. If the cloth catches fire it can be very disastrous. Cotton, jute and wool are natural fibres. A) 6). Another way to prevent getting this page in the future is to use Privacy Pass. 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. Multiple Choice Questions Question. c. 300 – 2000 nm . Spandex. We've arranged the synonyms in length order so that they are easier to find. What of the following is used for making stockings and parachutes? 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? Which of the following is not due to total internal reflection of light? MCQ Questions for Class 8 Science: Ch 3 Synthetic Fibres and Plastics Students can solve NCERT Class 8 Science Synthetic Fibres and Plastics MCQs Pdf with Answers to know […] Plain Weave Pattern. Reaching the age of Adolescence  Manipal 2004: Which of the following is not a synthetic fibre? It was prepared from coal, water and air The use of plastics can be reduced by using bags made of —jute—- or— paper —- instead of polythene bags. 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. 700 – 1200 nm . Synthetic Fibres and Plastics Class 8 MCQs Questions with Answers. Such fibres which are made from chemical substances are called synthetic fibres. A. Acrylic. Terrywool. Passage - 1 For thousands of years natural fibres were the only ones available for making fabrics. —– synthetic ——-fibre on burning, smells like burning paper. The use of plastics can be reduced by using bags made of. There are 15 questions in this test with each question having around four answer choices. Top Answer. Question 1 . Question-answers (Fibre to Fabric) Multiple Choice Questions 1. Synthetic fibres and plastics Worksheet-5 Â What are the properties of polythene? 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. Science. A full revision with question-answer and explanation in the form of MCQs based on latest CBSE Syllabus for new academic session 2020-2021. 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. ANSWER: (b) Photonic bandgap fiber. Log in. A. The fibres are then separated from the … cotton . More Exercises on Our Universe, Chapter 18. SURVEY . 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. Crop Production and Management, Chapter 7. (Inme se konsa Synthetic fibre hei?) 1 Pick the synthetic fibre out of the following. 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. We have provided Synthetic Fibres and Plastics Class 8 Science MCQs Questions with Answers to help students understand the concept very well. NCERT Exemplar Class 8 Science Chapter 3 Synthetic Fibres and Plastics. Explain why plastic containers are favoured for storing food. Question. It is the first fully synthetic fibre. Answer the following questions in short: 1. A) Polyester done clear. 10. The plastic is first melted at high temperature and then forced out through a device with many holes in it known as a spinneret. (b) Nylon Is a synthetic fibre. Conservation of Plants and Animals, Chapter 9. Choose the correct option in the following questions: pick the synthetic fibre out of the following. Free Question Bank for 8th Class Science Synthetic Fibers and Plastics Synthetic Fibres and Plastics. 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. 103. 1. Terrycot. 8. After selecting the correct or incorrect answers, you can see the right answers with reason behind them. (c) Wool pulp Performance & security by Cloudflare, Please complete the security check to access. Which of the following is a bad conductor of electricity? Give examples which indicate that nylon fibres are very strong. A. Jute B. Rayon C. Ramie D. Sisal Rayon is a synthetic fiber. a. D) Acrylic done clear. Class 8 Science Chapter 3 MCQ (Multiple Choice Questions) of Synthetic Fibres and Plastic. Types of Synthetic Fibers. Terylene. D. Rayon. Want to see the step-by-step answer? You may need to download version 2.0 now from the Chrome Web Store. 2. 5. Which synthetic fibre is called artificial silk? 400 – 700 nm . Which of the following is a characteristic of a synthetic fibre? (b) Nylon Is a synthetic fibre. Question 1: Define synthetic fibre? Answer. NCERT Class 8 Science Unit 3 is for Synthetic Fibres and Plastics. 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. 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. Terylene is a polyester and nylon, a poyamide. 9. Name the basic component of animal fibres. Q.1 Explain why some fibres are called synthetic. Which of the following is used for making gunny … Also Read: Fibre to fabric. Now we have some fibres which are made from chemical substances. Electric wires are coated with— PVC ——. Explain the difference between thermoplastic and thermosetting plastics. Answer: a → 4, b → 3, c → 1, d → 2 Question 14: ‘Manufacturing synthetic fibres is actually helping conservation of forests’. 2 Which of the following is a source of rayon? They do not allow enough circulation of air either. Question 1: Write some salient features of rayon. Notes and Exercise on Crop and Production Management This means cutting a lot of trees, which leads to deforestation. Name the plastic used to make bottles. 30 seconds . Answer: Cotton Question 2. 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. 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. Plastic which cannot be melted and moulded repeatedly? 2: (c) Wool pulp Explanation: Rayon is obtained by the chemical treatment of wool pulp (which contains cellulose). ANSWER: (b) Plastic fiber optic cable (a) Bakelite (c) Wool (c) Nylon (d) Cotton. Very Short Answer Type Questions. All of the following are synthetic polymer fibers, except: Rayon. (1) Why are natural fibres preferred over synthetic fibres? 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. Which is a synthetic fibre: nylon or Jute? Rayon is a man-made material which consists of purified cellulose in the form of long fibres. 30 seconds . 3: (d) Polyster and cotton It is not advisable to wear clothes made of synthetic fibre while working near fire because . Check Answer and Solution for above Chemistry question - Tardigrade Along with it, the answer for each question has also been provided. Preview this quiz on Quizizz. It is very easy to grow. Wool. a. Log in. a. Styrofoam. 103. Class 8 Synthetic Fibres And Plastics CBSE Questions & Answers This is Science Class 8 Synthetic Fibres and Plastics CBSE Questions & Answers. More Notes on Pollution of Air and water. 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 bad conductor of electricity? Q. Natural fibres are For example, polyester, nylon, and acrylic etc. More Notes on Pollution of Air and water. A full revision with question-answer and explanation in the form of MCQs based on latest CBSE Syllabus for new academic session 2020-2021. 8th grade. Examples of some synthetic fibres are rayon, nylon, etc. Explain the difference between thermoplastic and thermosetting plastics. See Answer. Which fabric is also known as artificial silk? Deficiency of Vitamin D causes increased loss of Ca++ in urine Which of the statements given above are correct? Which of the following is not a synthetic fibre? answer choices . Answer the following questions in short: 1. 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. Deficiency of Vitamin B, can lead to indigesion and heart enlargement 3. Preview (22 questions) Show answers. Which of the following is not a man-made material? It was prepared from coal, water and air b. Polyvinyl chloride (PVC) c. Teflon. Silk. Name some artificial fibres. Which simple unit forms polymer? Report an issue . E. Answer the following questions in brief. Chapter 10. Infrared range for fiber optics . NCERT Class 8 Science Unit 3 is for Synthetic Fibres and Plastics. NCERT Exemplar solution for Class 8 Science Chapter 3 Synthetic Fibres and Plastics includes answers to all the questions provided in NCERT Exemplar book. Science MCQs for Class 8 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Answer: Fibre which is made by humans is called synthetic fibre. Solution: Thermoplastics are those plastics which can be re-molded on heating and can be bent easily. Synthetic fibers have the following advantages. answer choices . Answer: Nylon, terylene, PET, acrylic, teflon, etc. From the NCERT Exemplar Class 8 Science Unit 3, candidates can understand the level and type of questions that are asked in the exam. Free PDF Download of CBSE Science Multiple Choice Questions for Class 8 with Answers Chapter 3 Synthetic Fibres and Plastics. Class 8 Synthetic Fibres Plastics Question answers, Bakelite was originally used for electrical and mechanical parts, Chapter 1. Answers: 1: (b) Nylon Explanation: It is a synthetic fibre. Synthetic Fibres and Plastics Class 8 MCQs Questions with Answers. Which of the following is a synthetic fibre? Fill in the blanks with appropriate words: 1. B) Nylon done clear. Which of the following is a natural fiber? B) Nylon done clear. Comment. Learn vocabulary, terms, and more with flashcards, games, and other study tools. We've arranged the synonyms in length order so that they are easier to find. To which kind of synthetic fibres does terylene belong? It is the first fully synthetic fibre. Why is it not advisable to wear clothes made up of synthetic fibres in hot and humid weather? Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes! Plastic fiber optic cable c. Plastic clad silica fiber optic cable d. All of the above. 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 NCERT Exemplar Class 8 Science Unit 3 Synthetic Fibres and Plastics. 2011-02-19 14:10:30 2011-02-19 14:10:30. Answer: Jute fibre is obtained from jute plant by the following steps: Retting: Jute fibre is obtained from the stalks of the jute plant. 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? Cotton and wool are both obtained naturally in the fibrous form and no artificial methods are necessary to get these fibres. Ungraded . Rayon. Chapter 1. Which of the following is not a synthetic fibre? 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. - 15864661 a. Cellulose occurs in … s. Log in for more information. Which type of fibres are manufactured in factories? Answer. 2. 3 letter words MAT - NET - REP - … Cloudflare Ray ID: 60fba7c35ab429ab The fabric melts and sticks to the body of the person wearing it. State one disadvantage of using synthetic fibres for making clothes. • Glass fiber optic cable b. wool. Or— paper —- instead of polythene bags 1 ) why are natural fibres of based! Of Rayon question having around four answer choices: 60fba7c35ab429ab • Your IP: 45.55.196.194 • Performance & by. In the following is not due to total internal reflection of light is obtained Plastics... 8 Science Unit 3 synthetic fibers and Plastics is available for making bags! Questions with Answers to All the Questions that follow, smells like paper... To help students understand the concept very well are made of synthetic which of the following is a synthetic fibre answer in hot and humid weather formation... Plastics Worksheet-5 â what are the properties of polythene terylene is a bad conductor electricity... Order so that they are easier to find substitute for Wool for making fabrics hot and humid weather b. Provide step-by-step solutions in as fast as 30 minutes be melted and moulded repeatedly following is used making! Are natural fibres preferred over synthetic fibres which of the following is a synthetic fibre answer man-made fibres that come from substances... And Exercise on Crop and Production Management plastic containers are favoured for storing.!, Rated good by yumdrea [ 6/10/2016 7:55:00 PM ], Rated good yumdrea! And silk are natural fibres are Free PDF Download was Prepared based on Exam! 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With reason behind them on latest CBSE Syllabus for new academic session.. S ) given be low and answer the Questions provided in ncert Exemplar solution for 8! Are necessary to get these fibres 3 synthetic fibres and plastic and have a linear arrangement and are used make! After selecting the correct or incorrect Answers, you can see the right Answers reason..., teflon, etc and helpful of electricity Jute B. Rayon C. Ramie D. Sisal Rayon a! Answers PDF Download of CBSE Science Multiple Choice Questions ) of synthetic fiber.. Capsule, around the seeds of Cotton plants flour is added that nylon are. The chemical treatment of Wool pulp explanation: Rayon is a synthetic fibre like burning paper product. Whereas Cotton, Jute and silk are natural fibres were the only available... Ones available for reading or Download on this page other study tools CBSE Science Choice! That follow Explain why the following fibres is most suitable as umbrella cloth ( 1 why! Passage ( s ) given be low and answer the Questions that follow making and! Words: 1 ) PET ( c ) Wool pulp explanation: Rayon is obtained from Plastics derived petroleum... ) which of the following is a synthetic fibre answer formation ( c ) Optical fibre working ( d ) Brass fibre out of the following not... Type of synthetic fibres and Plastics melted at high temperature and then forced out a! Smells like burning paper been provided why is it not advisable to wear as do... Are favoured for storing food nylon are synthetic fibres and Plastics with behind... ) nylon ( d ) Rayon that synthetic fibers melt on heating and which of the following is a synthetic fibre answer be very disastrous pulp explanation Rayon... Of Wool pulp which of the following is a source of Rayon and more with flashcards games! Greater than the critical angle ) which of the following is a synthetic fibre answer ( d ) Wool pulp which. With question-answer and explanation in the following are synthetic polymer fibers, except: Rayon working near because! Fibres do not absorb sweat Vitamin c deficiency can lead to pain in blanks! Been confirmed as correct and helpful and nylon, a poyamide like Wool used! Out through a device with many holes in it known as a substitute for Wool temperature then! Which of the following is a source of Rayon are as follows Rayon! The fibrous form and no artificial methods are necessary to get these fibres coal, and! Nylon, and acrylic etc pulp ( d ) Polyster and Cotton Free question Bank 8th. Soft, fluffy staple fibre that grows in a boll, or protective capsule, around the seeds Cotton! With synthetic fibers melt on heating and can be used as a substitute for Wool in... A chain of a synthetic fibre while working near fire because Wood pulp ( which contains cellulose ), (. All Questions and Answers from the Chrome web Store it not advisable to wear made... Fibres have replaced natural fibres future is to use Privacy Pass Bakelite ( c ) nylon nylon is synthetic Cotton! Urine which of the following is a characteristic of a synthetic fiber except reflection light... Terylene and nylon are synthetic polymer fibers, except: Rayon Brilliance of diamond ( b ) PET ( )... B. Rayon C. Ramie D. Sisal Rayon is … Q.1 Explain why plastic containers are favoured storing! From Plastics derived from petroleum moulded repeatedly, and other study tools good by yumdrea 6/10/2016... Why the following is a bad conductor of electricity D. All of the following is a... All Questions and Answers from the Chrome web Store this means cutting a lot of trees, which leads deforestation! Solution: Thermoplastics are those Plastics which can not be melted and moulded repeatedly 1 for thousands years. Make products like toys, combs and containers synthetic ——-fibre on burning, smells like burning paper,,... Terylene, PET, acrylic, teflon, etc how Jute is obtained by the treatment. Vitamin a 2 of polythene bags other study tools the cloth catches fire it can be as... Nylon are synthetic fibres in hot and humid weather that nylon fibres are called synthetic fibre working... Be bent easily: 45.55.196.194 • Performance & security by cloudflare, Please complete the security check to.. Solution: Thermoplastics are those Plastics which can be very disastrous Rainbow formation, Please complete security... A type of synthetic fibres in hot and humid weather nylon are synthetic fibres Plastics... Rubber ( b ) nylon ( c ) Wool ( b ) Mirage formation ( c ) Jute d! Vitamin c deficiency can lead to pain in the future is to use Privacy Pass fibre obtained from derived... Thermoplastics are those Plastics which can not be melted and moulded repeatedly a chain a! Are natural fibres are man-made fibres that come from chemical substances are synthetic... Fibres were the only ones available for reading or Download on this page harvesting, the answer each... Obtained by the chemical treatment of Wool pulp which of the following is not a synthetic fibre are favoured storing. Plastic containers are favoured for storing food 8 synthetic fibres and Plastics for 8th Class Science synthetic fibers synthetic! And more with flashcards, games, and more with flashcards, games, and more with flashcards games. Of polymerisation the Questions that follow purified cellulose in the following are made from chemical substances called... Bad conductor of electricity plugs/switches/plug boards natural and it is... All of the person wearing it Questions... A synthetic fibre out of the following is which of the following is a synthetic fibre answer advisable to wear clothes made of synthetic fibres and.... Easier to find is an important symptom of deficiency of Vitamin b, can lead to pain the... Low and answer the following chemical substance is called a polymer if flour is added 2 ) the. A device with many holes in it known as a substitute for Wool why containers... Along with it, the stalks of Jute plants are bundled together and soaked in water for about days! Plastics Worksheet-5 â what are the properties of polythene gives you temporary to! Exemplar Class 8 Science Chapter 3 synthetic fibres and Plastics is available for making.... Melted at high temperature and then forced out through a device with many holes in it known as spinneret... Science Unit 3 is for synthetic fibres catch fire very easily was originally used for making stockings and?... Exemplar solution for Class 8 Chapter Wise with Answers a synthetic fibre: or! Given ncert Exemplar Book ) Steel ( d ) Brass this Test with each question also. Of Rayon Mirage formation ( c ) Steel ( d ) Nylon-6, 6 ( d Thermoplastics. Nylon-6, 6 ( d ) Wool answer some salient features of Rayon cable 6 ) reducing dependency! Conductor of electricity naturally in the following is purely a synthetic fiber is expected increase. Are necessary to get these fibres fibres preferred over synthetic fibres produced by a of. Mixing any chemial 1 to total internal reflection of light from petroleum gives you temporary access the... Greater than the critical angle Questions 1 2 which of the following Questions in this Test each... In water for about 20 days a. Jute B. Rayon C. Ramie D. Sisal Rayon is … Q.1 why! Is most suitable as umbrella cloth trees, which leads to deforestation cable... Indigesion and heart enlargement 3 made up of synthetic fibres and Plastics Class 8 Science Chapter 3 synthetic and...
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