4. 3. In addition to cellulose, the fibers may also contain hemicellulose and lignin, with different percentages of these components altering the mechanical properties of the fibers. CBSE Worksheets for Class 6 Science Fibre to Fabric Assignment 4; D. Answer the following questions in short: 1. Answer: A quilt is made up of wool or fibres obtained from animal fur. NCERT solutions for Science Class 6 CBSE chapter 3 (Fibre to Fabric) include all questions with solution and detail explanation. Such fibres have air spaces in them, which trap air and do not allow the body heat to escape. Question 2: State whether the following statements are true or false: a) Yarn is made from fibres. False because it is obtained naturally from plants.....Mark as brainliest And follow also..... 1. Linen fiber is a cellulose fiber derived from the flax plant trunk. II) Write True or False : 1. Polyester is a natural fiber. False, Wool, is made from Sheep or goats etc. They consist of a small unit or a polymer which is made from many repeating units known as monomers. Play this game to review Environmental Chemistry. Synthetic fibres: nylon, polyester . Answers (2) Brendan 1 November, 21:02. Synthetic fibres can be mass-produced to almost any set of required properties. (d) Weaving of yam makes a piece of fabric. 5. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Most bast fibres are quite strong and are widely used in the manufacture of ropes and twines, bagging materials, and heavy-duty industrial fabrics. Answer 25. c) Jute is the outer covering of coconut. Flax and jute have fibres on its fruits. iii) True because synthetic clothes melt on exposure to heat iv) False- Plastics are non-biodegradable. • Notes accompanying the disc offer facts about synthetic fibres, hydrocarbons, and plastics together with true or false quizzes. Log in. Übersetzung für 'false' im kostenlosen Englisch-Deutsch Wörterbuch und viele weitere Deutsch-Übersetzungen. State whether the following statements are true or false: a) Yarn is made from fibres. True; False, synthetic fibres melt on heating; True ; False, most of the plastics are non biodegradable. Synthetic Fibres: nylon, polyester . 2. Spinning is a process of making fibre. (d) The process of removing seeds from cotton is called ginning. d) The process of removing seed from cotton is called ginning. Page No 26: Question 2: How does a quit protect us from cold? (g) Polyester is a natural fibre. State whether the following statements are true or false: a) Yarn is made fr om fibr es. Correct statements (a) Silk is an animal fibre. Soln: i) True ii) False- Synthetic fibres melt on heating. Ans: Natural fibres: cotton, silk, jute. f) Silk fibre is obtained from the stem of a plant. Wool is an example of a synthetic fiber. Synthetic fibres: nylon, polyester. 2. Synthetic fibres are also called _____ or _____ fibres. The fibre obtained from hemp and flax plants is used to make paper. The second stage began with the use of animal fibres especially wool and silk. In this project she has to make a list of items from her home that are made up of different fibres and she has to classify them into plant, animal or synthetic fibres on the basis of the fabric from which these item are made up of. * {{quote-magazine, title=A better waterworks, date=2013-06-01, volume=407, issue=8838 , page=5 (Technology Quarterly), magazine=(The Economist) citation, passage=An artificial kidney these days still means a refrigerator-sized dialysis machine.Such devices mimic the way real kidneys cleanse blood and eject impurities and surplus water as urine. Name two items that are made from coconut fibre. Lay flat to dry. Nylon, the first synthetic fiber in the "fully synthetic" sense of that term, was developed by Wallace Carothers, an American researcher at the chemical firm DuPont in the 1930s. Spinning- It is a process of making fibres… True False.
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