Class 7 3. Fibre to Fabric Natural Fibres and Synthetic Fibres: NCERT Book Solutions
Class 7 chapter 3. Fibre to Fabric Important key points for quick revision for board exams, ssc and upsc exams preparaion.
NCERT Solutions
All chapters of ncert books Science 3. Fibre to Fabric Natural Fibres and Synthetic Fibres is solved by exercise and chapterwise for class 7 with questions answers also with chapter review sections which helps the students who preparing for UPSC and other competitive exams and entrance exams.
Class 7 chapter 3. Fibre to Fabric Important key points for quick revision for board exams, ssc and upsc exams preparaion. - 3. Fibre to Fabric - Natural Fibres and Synthetic Fibres: NCERT Book Solutions for class 7th. All solutions and extra or additional solved questions for 3. Fibre to Fabric : Natural Fibres and Synthetic Fibres Science class 7th:English Medium NCERT Book Solutions. Class 7 chapter 3. Fibre to Fabric Important key points for quick revision for board exams, ssc and upsc exams preparaion.
3. Fibre to Fabric : Natural Fibres and Synthetic Fibres Science class 7th:English Medium NCERT Book Solutions
Class 7 chapter 3. Fibre to Fabric Important key points for quick revision for board exams, ssc and upsc exams preparaion. - 3. Fibre to Fabric - Natural Fibres and Synthetic Fibres: NCERT Book Solutions for class 7th. All solutions and extra or additional solved questions for 3. Fibre to Fabric : Natural Fibres and Synthetic Fibres Science class 7th:English Medium NCERT Book Solutions.
Class 7 3. Fibre to Fabric Natural Fibres and Synthetic Fibres: NCERT Book Solutions
NCERT Books Subjects for class 7th Hindi Medium
3. Fibre to Fabric
Class 7 chapter 3. Fibre to Fabric Important key points for quick revision for board exams, ssc and upsc exams preparaion.
Natural Fibres and Synthetic Fibres
1. Natural fibres : The fibres which are obtained from plants and animals are called natural fibres.
Examples of natural fibres:
(i) Fibres obtained from plants : Cottons, Jute etc.
(ii) Fibres obtained from animals : Wool and silk.
2. Synthetic Fibres : Nylon, polyesters, Acrilyc etc.
Obtaining Wool: Wool is obtained from the fleece (hair) of sheep or yak.
Obtaining Silk : Silk fibres come from cocoons of the silk moth.
Animals by which obtain wool : Wool comes from sheep, goat, yak and some other animals.
The hairy skin of the sheep has two types of fibres that form its fleece:
(i) the coarse beard hair, and
(ii) the fine soft under-hair close to the skin.
Selective breeding:
The process of selecting parents for obtaining special characters in their offspring, such a soft under hair in the sheep, is ‘termed selective’.
- sheep wool and Yak wool is common in Tibet and Ladakh.
- Angora wool is obtained from angora goats, Found in hilly regions such as Jammu and Kashmir.
- The fur (hair) on the body of camels is also used as wool. Llama and Alpaca, found in South America, also yield wool.
Pashmina shawls : Wool is also obtained from goat hair. The under fur of Kashmiri goat is soft. It is woven into fine shawls called Pashmina shawls.
Name of Animals which yield wool :
(i) Angora goat
(ii) Goat
(iii) Sheep
(iv) Camel
(v) yak
(vi) Llama
(vii) Alpaca
Class 7 chapter 3. Fibre to Fabric Important key points for quick revision for board exams, ssc and upsc exams preparaion.
See other sub-topics of this chapter:
1. Natural Fibres and Synthetic Fibres
2. The steps of obtaining wool
Class 7 chapter 3. Fibre to Fabric Important key points for quick revision for board exams, ssc and upsc exams preparaion. - 3. Fibre to Fabric - Natural Fibres and Synthetic Fibres: NCERT Book Solutions for class 7th. All solutions and extra or additional solved questions for 3. Fibre to Fabric : Natural Fibres and Synthetic Fibres Science class 7th:English Medium NCERT Book Solutions. Class 7 chapter 3. Fibre to Fabric Important key points for quick revision for board exams, ssc and upsc exams preparaion.
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Science Chapter List
1. Nutrition in Plants
2. Nutrition in Animals
3. Fibre to Fabric
4. Heat
5. Acids, Bases and Salts
6. Physical and Chemical Changes
7. Weather, Climate and Adaptations of Animals to Climate
8. Winds, Storms and Cyclones
9. Soil
10. Respiration in Organisms
11. Transportation in Animals and Plants
12. Reproduction in Plants
13. Motion and Time
14. Electric Current and its Effects
15. Light
16. Water : A Precious Resource
17. Forests: Our Lifeline
18. Wastewater Story
