... c. the human body does not make cholesterol d. cells use cholesterol to make fiber. The jute bags are used as shopping bags that as well as for storing food grains. Question 5. Fiber is important for the digestive system and for cardiovascular health. (c) The term "natural fiber" means any fiber that exists as such in the natural state. The most common raw material is cattle hide. This brings the fibres together to form yarn. The polymer is a chemical substance consisting of large molecules made from many smaller molecules: some polymers, such as nylon, are artificial. These substances are sustainable because they store fossil resources and although they are not yet biodegradable, it is a great advance for science. Proteins and DNA are natural polymers. A type of fibre obtained naturally from cocoon (4) 6. ... the prevalence of diabetes in the United States is decreasing. List any two properties of rayon. Papermaking, formation of a matted or felted sheet, usually of cellulose fibers, from water suspension on a wire screen. A plastic used for making containers and carry bags (9) 3. Substance used as synthetic wool (7) 2. The outer covering of coconut has also some fibres on it. These are called coconut fibres. When a liquid substance is poured into a vessel, it takes the shape of the vessel, and, as long as the substance stays in the liquid state, it will remain inside the vessel. The coconut fibres are used for making ropes and mats.The common name of coconut fibre is coir. The long cotton fibers are used to make cloth, the short fibers can be used in the paper industry. Cotton, jute, silk, wool, etc., are obtained from natural sources, i.e., animals or plants, Polyester, nylon, rayon, etc., are man-made materials that are used for making clothes. Cotton is a plant that produces fibers, which are used to make clothes and other products, like towels, carpets or sheets.Clothes made out of cotton are especially light and comfortable.. What Cotton is Used For. In addition, paper and paperboard provide materials for hundreds of ⦠Passage - 3 Material used for making clothes that we wear during line rent seasons is obtained from natural as well asman-made sources. Leather is a durable and flexible material created by tanning animal rawhide and skins. 1. Furthermore, when a liquid is poured from one vessel to another, it retains its volume (as long as there is no vaporization or change in temperature) but not its shape. Question 6. Answer: Answer: Yarns are made up of thin strands called fibres. It can be produced at manufacturing scales ranging from artisan to modern industrial scale.. Leather is used to make a variety of articles, including footwear, automobile seats, clothing, bags, book bindings, fashion accessories, and furniture. Sometimes cellulose (the main component of cotton fiber) and pulp of wood are used to make materials such as acetate and rayon (artificial silk). It is used to make furnishings and upholstery. The fibre obtained from wood are used to make paper. Rayon is a man-made fibre which is produced by the chemical processing of wood pulp, i.e., a natural substance. In this process, a mass of cotton wool are drawn out and twisted. The process of making yam from fibres is called spinning. Every part of the cotton plant can be used. (d) The term "manufactured fiber" means any fiber derived by a process of manufacture from any substance which, at any point in the manufacturing process, is not a fiber. Answer: The two uses of rayon are: It is used to make apparels like shirts, blouses, etc. Another name for this compound is artificial silk (5) Down 5. Paper is the basic material used for written communication and the dissemination of information. 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