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