Students can get how to tackle different questions easily by solving the Extra Questions for Class 8 Science Question bank on a regular basis. 2. Jute fibre is obtained from jute plant by the following steps: Retting: Jute fibre is obtained from the stalks of the jute plant. Natural fibres – fibre forming material is of the natural origin. Man made fibres are considered under two main headings. Which of the following properties should not be examined when comparing two synthetic fibers? Cellulose is the basic component of: The cuticle. Polymers are micro sized molecules. None of the answers are correct; there's no real difference between synthetic and natural fibers. 5. NCERT Exemplar Class 8 Science Chapter 3 Synthetic Fibres and Plastics. (a) Acrylic (b) Nylon (c) Polyester (d) Rayon (a) Cotton (b) Nylon (c)Jute (d)Wool Answer. Synthetic Fibres and Plastics Class 8 Science Chapter 3 as per NCERT Book used in CBSE and other Schools. Polyester and nylon are the examples of synthetic fibre… 2. 2. In which […] A synthetic fiber is shiny and silky, while natural fibers are always dull and rough. Give examples which indicate that nylon fibres are very strong. Wool is a natural fibre obtained from the body of many animals. Which of the following statements is/are false ? a. Cellulose is a polymer that is made up of a large number of small glucose molecules joined one after the other. 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. 3._____plastics do not become soft on heating and cannot be reshaped. 5._____is a kind of fibre that resembles wool. Play this game to review Science. Here we have given NCERT Exemplar Class 8 Science Chapter 3 Synthetic Fibres and Plastics. (a) Cotton (b) Jute (c) Wool (d) Polyster 3. Amino Acids. Natural Polymer Fibres. The fibres in this category may be classified into the following sub groups. Explain why some fibres are called synthetic. 4._____is called an artificial silk. After harvesting, the stalks of jute plants are bundled together and soaked in water for about 20 days. Synthetic Fibres & Plastics. C. Write 'T' for True or 'F' for False for the following sentences :-1. NCERT Book for Class 8 Science Chapter 3 Synthetic Fibers and Plastics is available for reading or download on this page. The portion of the hair containing its scales is: Multiple Choice Questions Question. 1 Pick the synthetic fibre out of the following. Explain why plastic containers are favoured for storing food. Synthetic fibres – fibre forming material is made from simpler substances. 4. Wood contains a very less amount of cellulose polymer. Chapter 3. (b) Nylon Is a synthetic fibre. c. The small molecules that join together to form a polymer are … Explain why the following … A. Different types of synthetic fibres like, Rayon fibres, Nylon fibres, Polyester fibres and Acrylic fibres … Explain the difference between thermoplastic and thermosetting plastics. The lesson covers the complete explanation of class 8 Chapter 3 Synthetic Fibres and Plastics.Topics covered are Introduction to fibres, kinds of fibres. 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. (a) Plastic (b) Wood (c) Cement (d) Nylon. 2. 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. Class 8 Synthetic Fibres Plastics Question answers. Plastics are non bio … b. The monomers involved in the synthesis of proteins are: Wood. 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. 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