Retting softens the stalks and makes it possible to separate the fibrous material from the unusable material by hand. Final separation of the fibre is accomplished by a breaking process in which the brittle woody portion of the straw is broken, either by hand or by passing through rollers, followed by the scutching operation, which removes the broken woody pieces (shives) by beating or scraping. e) Weaving of yarn makes a piece of fabric. During this period, the stem of the plant rots and the fibres (present in the stem) remain. What are natural fibres? c) Jute is the outer covering of coconut. g) Polyester is a natural fibre. Explain how fibres are obtained from the jute plants. my username id - noneed_ofname21. (False) d) The process of removing seeds from cotton is called ginning. Explain the process of making yarn from fibre. These plants take nearly 3 months, to grow to an height of 12 to 15 ft, during season and then cut & bundled and kept immersed in water for "Retting" process, where the inner stem and outer, gets separated and the outer plant gets 'individualised', to form a Fibre. The end result is a strick, a half-pound bundle of long, light grey fibers which resemble human hair. The process of taking out threads from the cocoon for use as silk is called reeling the silk. This is known as ginning. Motion ) Question 1. Motion | Lesson Exercises, CBSE Class 7th (VII) English Chapter 2. In olden days, the old textiles were recycled to obtain fibres. It is used for making carpets, ropes, covers and mattress. The fabrics are the flexible materials, which consists of a network of natural or artificial fibres, produced by weaving cotton, nylon, jute, wool, silk, or other threads together. Explain the process of obtaining silk from cocoon. explain the process of obtaining silk fibre from cocoon. About Jute plant. f) Silk fibre is obtained from the stem of a plant. Log in. Answer: The process of making yarn from fibres is called spinning. Nowadays, fibre is obtained from the fibre plant. Ans. Ans. Answer. When the jute plant is in the flowering stage, it is harvested. Lesson 3 : Taro’s Reward ? Physical Features Of India | Geography | CBSE Class 9th Question 1. Jute fibre is pale- yellow in colour and 2to 3 meter long. In India, jute is mainly grown in west Bengal, Bihar and Assam. There are two main processes of making fabric from fibre – weaving and knitting. Method of Cultivating and Processing of Jute: Jute is generally sown in February on lowlands and in March-May on uplands. Some machines combine breaking and scutching operations. Silk yarns come from the cocoon of the silkworm. Process Of Making Fabric From Fibre. Question: Explain how jute is obtained from the jute plant. Jute fibre has silky texture. Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans? Fibre is extracted from the retted jute by hand, with jerks and pulls. This site is using cookies under cookie policy. Question 17. In India, jute is basically grown in the states of Bihar, West Bengal and Assam. Explain the process of obtaining jute and cotton fibre Get the answers you need, now! The silk thread or the yarn is obtained from the silk moth’s cocoon. Forside › Uncategorized › explain the process of obtaining silk class 7. explain the process of obtaining silk class 7. Powered by, CBSE MASTER | NCERT Textbooks Exercises Solutions, NCERT Class VI (6th) Social Science -Geography, NCERT Class VI History - Social Studies (Our Pasts-I), NCERT Class VI Social Science - Social and Political Life-1, CBSE Class VIII (8th) Science | All Chapters Solved Exercises, CBSE Class VI ( 6th) Mathematics Chapter 1 : Knowing our Numbers -Try These (Extra Solved Questions and Examples with in Chapter), CBSE Class IX ( 9th) Science | Chapter 8. Processing techniques and color applications also influence the value of cotton fiber identifications. Steps to Commercial Fiber Processing • Shearing – shaving the hair from the sheeps body. Jute fiber is being dehydrated in sunlight after natural or microbial retting Retting is the process of extracting fibers from the long lasting life stem or bast of the bast fiber plants. b) Spinning is a process of making fibres. Fibre to Fabric Chapter 4. A Gift of Chappals - Solved Exercises, CBSE Class VII (7th) Science | Solved Lesson Exercises, Chapter 8 Motion | Physics | MCQs | Class 9th | - Multiple Choice Questions, CBSE Class VII (7th) English Lesson 1 : Three Questions - Solved Exercises, Chapter 2. This process brings all the fibres together to from a yarn. Textile – Fibre to Fabric Processing P R Wadje, Non-member This paper is an attempt to provide all basic information related to textile Industry – in the field of manufacturing, purchasing, promoting, selling and so on. The climatic conditions required for the cultivation of jute are temperature, rainfall and soil. (True) e) Weaving of yarn makes a piece of fabric. Simple theme. (d) The process of removing seeds from cotton is called ginning. b) Spinning is a process of making fibres. SEGMENTO. True False: g. Polyester is a natural fiber. This process is called picking. 1. The retting process consists of bundling jute stems together and immersing them in slow running water. These are called coconut fibres. (ii) Filament are short fibres. 3. Answer: The thin strands are called as yarns which are made from fibre. Answer: A pile of cocoon is used for obtaining silk fibre. clothes. Ans :The process of making yarn from fibres is called spinning. Retting, process employing the action of bacteria and moisture on plants to dissolve or rot away much of the cellular tissues and gummy substances surrounding bast-fibre bundles, thus facilitating separation of the fibre from the stem. The outer covering of coconut has also some fibres on it. What is the secret that Meena shares with Mridu in the backyard? What is a larva ? However, another species of jute, called Corchorus capsularis (tossa jute) is considered to be superior even though it is harder to cultivate. The two common methods used for producing Fabrics are: Knitting. After harvesting, it is kept submerged in water for a few days. Spinning is done at home using simple devices like hand spindle (Takli) and charkha. Preparation of yarn from fibres by spinning. Answer: The jute plant is normally harvested at flowering stage. Jute fibre is used for making ropes and jute bags. Explain the process of making yarn from fibre. When the jute plant is in the flowering stage, it is harvested. Log in. Q.3. Spinning is done at home using simple devices like hand spindle (Takli) and charkha. Obtaining fibre, (ii) Preparation of yarn from fibres by spinning, (iii) When two sets of yarn are involved, yarns are woven on looms to make a fabric. Physical Features Of India | Geography | Class 9th CBSE, CBSE Class 10th Science | Chapter 6. nnn Fabrics are made from yarns, which in turn are made from fibres. This sticky substance needs to be removed in order to obtain the fibres. It is used in the production of fibre from plant materials such as flax and hemp stalks and coir from coconut husks. f) Silk fibre is obtained from the stem of a plant. (False) c) Jute is an outer covering of coconut. The process by which fibres are obtained from the stem of the plant is known as retting . The fibres are then separated from the stem by hand. Wool fibres come from sheep, camel, goat, and yak. The crop takes 8- 10 months to mature but different varieties take different time to mature. 2.14.1 The Process of Making Fabric from Yarn; Class 6 Science Chapter 3 Important Questions 2020-21 . This process is called retting. Explain how fibres are obtained from the jute plants. The cocoons are kept under the sun or boiled or exposed to steam. It is cultivated in rainy season. Piles of cocoons are kept under the sun, boiled or exposed to steam. The type of fibre determines the extraction process to be used. Jute" is the name of the plant or fiber used to make burlap, hessian or gunny cloth. Nutrition in Plants Chapter 2. Wool is obtained from the fleece of sheep or goat. Explain how jute is obtained from the jute plant. Jute fibre is produced abundantly in Bangladesh and hence, very cheap. Q.2: State whether the following statements are true or false: a) Yarn is made from fibres. The jute plant is normally harvested at flowering stage. (True) b) Spinning is a process of making fibres. Question 1. The bundles are steeped in … Then, the stem of such harvest plant are immersed in water for a few days so that they rot. It is also called Golden fibre. (iv) Silk is prepared from the stem of a plant. Cotton and jute are examples of fibres obtained from plants. Cotton, wool, silk and jute are some natural fibres, while nylon and polyester are some examples of synthetic fibres. Why did the king want to know answer to three questions? Silk fibres are obtained from the silkworm and the process of obtaining silk from the silkworm is called sericulture. How? Ans : The process of making yarn from fibres is called spinning. Jute mainly grows in regions having alluvial soil which is found in the delta regions of the Ganges and Brahmaputra rivers. Jute fibre is very strong. Knowing our Numbers:Page 2 Q. The stems of harvested plants are bundled and immersed in water for 10 to 15 days. Heat Chapter 5. • Scouring -the removal of all impurities from grease wool, using water, detergent, and sometimes a mild alkali. The soft tissues are removed from the fibre plant with the help of bacteria. So we get all these from nature, while we obtain nylon, polyester from chemical processes. When the jute plant is at its flowering stage, it is harvested. Answered Explain the process of obtaining jute and cotton fibre 1 See answer Guru5061 is waiting for your help. Jute is grown in alluvial soil which is found usually in the Delta Region of the Ganges and Brahmaputra rivers. 3)the stem is immeresed in water for a few days. Weaving: Weaving involves making fabric by arranging two sets of yarn. A process called retting is used to remove the non-fibrous material from the stem and skin of the jute stalk. Weaving: Weaving involves making fabric by arranging two sets of yarn. Jute. A pile of cocoons is used for obtaining silk fibres. The process by which silk fiber is obtained is called REELING THE SILK. Then the displaceme... Part (1)               Question 1. Wool. Lesson 6 : Who I am? LOJAS AS MELHORES LOJAS PRA VOCÊ E SUA FAMÍLIA. Chapter 3 - Fibre to Fabric. Process of Fibre Crops. True False: f. Silk fiber is obtained from the stem of a plant. The life cycle of a silkworm begins from the: Stage 1-After mating, female silk moth lays around 200 – 300 eggs at a time. Retting is a process employing the action of micro-organisms and moisture on plants to dissolve or rot away much of the cellular tissues and pectins surrounding bast-fibre bundles, and so facilitating separation of the fibre from the stem. The investigation on the enhancement of mechanical properties of concrete with jute yarn as reinforcement, if enhanced, will not only explore a way to improve the properties of concrete, it will also explore the use of jute and restrict the utilization of polymer which is environmentally detrimental. The natural colour of wool is generally creamy white though some breeds of sheep produce wool having brown and black colours. FIBRE TO FABRIC 13 Q.2. It is also obtained from the hair of rabbits, yak and camels. When a single yam is used, the fabric is prepared by knitting. (True) f) Silk fibre is obtained from the stem of a plant. The coconut fibres are used for making ropes and mats.The common name of coconut fibre is coir. A worker covers a distance of 40 km from his house to his place of work, and 10 km towards his house back. Ques 6: Explain the process of making yarn from fibre. 2)the plant is usually harvested at the flowring stage. Sem categoria • Drying- The amount of water held by the wool is reduce to below 15%.Moisture in wool is removed by hot, dry air blown through the wool prior to being exhausted from the dryer. These fibres can then be separated from the non-fibrous matter by hand. CROP PRODUCTIION AND MANAGEMENT | CBSE Class VIII (8th) Science | Solved Exercises Chapter 2. The fabric is stitched to make clothes. g) Polyester is a natural fibre. (v) Jute fibres are obtaine from (a) stem of jute plant (b) seeds of jute plant (c) fruit covering of jute plant (d) roots of jute plant Answer: (a) Jute fibres are obtained from the stem of jute plant. Jute is a strong plant fibre. Lesson 1 : Who Did Patrick’s Homework ? The fibre is extracted from the stem of the jute plant by the process of retting. Class 6 Chemistry Fibre to Fabric: Jute: Jute. The final process is hackling, in which the fiber is drawn through a series of metal combs to remove the last of the boon and shorter fibers. Thus, the jute plants are cut from the fields when they are in the flowering stage. 2.13 Explain the process of making yarn from fibre. At flowering stage only, jute plants are cut and a good quality fibre is obtained at this stage. Jute fibre is obtained from the stem of the jute plant. Add your answer and earn points. Jute is sometimes also called as the golden fibre. Jute fibres are naturally glued together by a sticky or gummy substance. Can you give four examples of such clothes. Give an example from the sources of animals fibres? Explain how jute is obtained from the jute plant. These fibres are converted into yarns to make fabrics (Fig). The jute fiber comes from the stem and ribbon (outer skin) of the jute plant. True False: e. Weaving of yarn makes a piece of fabric. d) The process of removing seed from cotton is called ginning. It is produced from flowering plants in the genus Corchorus, which is in the mallow family Malvaceae.The primary source of the fiber is Corchorus olitorius, but it is considered inferior to Corchorus capsularis. " While discussing fibre extraction methods, it is essential to mention the decortication process – the extraction of green fibre … Silk fibres are obtained from the silkworm and the process of obtaining silk from the silkworm is called sericulture. For example, cotton fabric can be stitched into a cotton frock or a cotton kurta. Machine unwinds the silk thread from cocoons. Jute fibre is obtained from the stem of the jute plant. sisal is obtained from leaves). Once a sheep develops a thick coat of hair, it is shaved off to obtain wool. 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