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CBSE Notes for Class 7 Science chapter 3. Fibre to Fabric: The steps of obtaining wool , quick revision notes for Class 7 Science chapter 3. Fibre to Fabric The steps of obtaining wool , Chapter-wise CBSE Revision Notes, CBSE Notes PDF Free Download, CBSE One Liner Notes Class 7, Half Yearly Revision Notes, CBSE Revision Notes Class 7 Science
Get CBSE Notes for Class 7 Science Chapter 3. Fibre to Fabric: The steps of obtaining wool prepared by experts as per the latest NCERT syllabus and CBSE exam pattern. These concise and easy-to-understand notes cover important definitions, formulas, diagrams, and key concepts from the chapter to help students in quick revision and effective exam preparation. Whether you are studying for school tests, board exams, or competitive exams, these notes provide a reliable study resource. Designed in simple language with point-wise explanations, they save time and enhance learning efficiency. Download free PDF notes, explore solved examples, and strengthen your understanding of [Topic Name] for scoring high marks. Perfect for Class 7 students who want clear, structured, and exam-oriented notes for CBSE Science.
The steps of obtaining wool :
(i) Shearing: The fleece of the sheep along with a thin layer of skin is removed from its body. This process is called shearing. In this process the hairs are shaved off. The hair provide woolen fibres.
(ii) Scouring : The sheared skin with hair thoroughly washed in tanks to remove grease, dust and dirt. This is called scouring.
(iii) Sorting: The hairy skin is sent to a factory where hair of different textures are separated. This ia called sorting.
(iv) Cleaning of Burrs: The small fluffy fibres, called burrs, are picked out from the hair. The fibres are scoured again and dried. This is the wool ready to be drawn into fibres.
(v) Dyeing : The dyeing in various colours. as the natural fleece of sheep and goats is black, brown or white.
(vi) Rolling into Yarn : The fibres are straightened, combed and rolled into yarn. The longer fibres are made into wool for sweaters and the
shorter fibres are spun and woven into woollen cloth.
Occupational hazard : Sorter's job sometimes workers get infected by a bacterium, anthrax, which causes a fatal blood disease called sorter’s disease. Such risks faced by workers in any industry are called occupational hazards.
Timing to remove hair :
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Ace your exams with CBSE Notes for Class 7 Science chapter 3. Fibre to Fabric: The steps of obtaining wool . These notes provide a clear explanation of important concepts, formulas, diagrams, and solved examples from the NCERT syllabus. Specially designed for Class 7 students, the notes are structured in a simple, point-wise manner to make revision quick and effective. Whether you are preparing for school tests, board exams, or competitive exams, these Science notes will boost your confidence and save valuable study time. You can also download Science class 7 chapter 3. Fibre to Fabric free PDF notes for offline learning. With easy-to-grasp language, exam tips, and well-organized content, these CBSE Science notes on chapter 3. Fibre to Fabric – The steps of obtaining wool are the perfect study companion for scoring high marks and mastering the subject.
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