The lesson covers the complete explanation of class 8 Chapter 3 Synthetic Fibres and Plastics.Topics covered are Introduction to fibres, kinds of fibres. Yak, sheep, camel, goat are the common animals which produce fur on their body which can be obtained and used in the production of wool. 2. (b) Nylon Is a synthetic fibre. a. Cellulose is a polymer that is made up of a large number of small glucose molecules joined one after the other. Jute fibre is obtained from jute plant by the following steps: Retting: Jute fibre is obtained from the stalks of the jute plant. Plastics are non bio ⦠Polymers are micro sized molecules. 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. Synthetic fibres do not absorb_____. Polyester and nylon are the examples of synthetic fibre⦠Which synthetic fibre is called artificial silk? A synthetic fiber is shiny and silky, while natural fibers are always dull and rough. (a) Plastic (b) Wood (c) Cement (d) Nylon. 1 Pick the synthetic fibre out of the following. Multiple Choice Questions Question. Natural fibres â fibre forming material is of the natural origin. Question-answers (Fibre to Fabric) Multiple Choice Questions 1. Students can get how to tackle different questions easily by solving the Extra Questions for Class 8 Science Question bank on a regular basis. Synthetic Fibres & Plastics. 5._____is a kind of fibre that resembles wool. Here we have given NCERT Exemplar Class 8 Science Chapter 3 Synthetic Fibres and Plastics. 4. c. The small molecules that join together to form a polymer are ⦠Which of the following statements is/are false ? NCERT Book for Class 8 Science Chapter 3 Synthetic Fibers and Plastics is available for reading or download on this page. 2. Synthetic Fibres and Plastics Class 8 Science Chapter 3 as per NCERT Book used in CBSE and other Schools. Natural Polymer Fibres. The fibres in this category may be classified into the following sub groups. 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. Synthetic Fibres and Plastics Class 8 Extra Questions and Answers Science Chapter 3 PDF are solved by experts and will guide students in the right direction. Explain the difference between thermoplastic and thermosetting plastics. Explain why the following ⦠5. Which of the following is used for making gunny bags? C. Write 'T' for True or 'F' for False for the following sentences :-1. The natural fibres which are obtained from these animals are utilised for the production of wool. The monomers involved in the synthesis of proteins are: Wood. 2. (a) Acrylic (b) Nylon (c) Polyester (d) Rayon Explain why some fibres are called synthetic. b. Multiple Choice Questions (MCQs) Which of the following is not a man-made material? Explain why plastic containers are favoured for storing food. Man made fibres are considered under two main headings. 3._____plastics do not become soft on heating and cannot be reshaped. A. Which of the following properties should not be examined when comparing two synthetic fibers? None of the answers are correct; there's no real difference between synthetic and natural fibers. (a) Cotton (b) Jute (c) Wool (d) Polyster 3. Give examples which indicate that nylon fibres are very strong. Amino Acids. The portion of the hair containing its scales is: 4._____is called an artificial silk. 2. The fibres are then separated from the stem in long strands and washed in clear, running water. Cellulose is the basic component of: The cuticle. 3. Class 8 Synthetic Fibres Plastics Question answers. Answer the following questions in short: 1. Wool is a natural fibre obtained from the body of many animals. Digital NCERT Books Class 8 Science pdf are always handy to use when you do not ⦠Chapter 3. 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