F. Answer these questions.
1. What are natural fibres? Give two examples o
natural fibres.
of man-made fibres.
3. Give three properties of man-made fibres.
4. Choose the natural fibres from the following:
Wool, nylon, cotton, rayon, jute, linen, polyester
5. What are the sources of natural fibres?
6. Where is cotton grown in India?
2. What are man-made fibres? Give two examples
Answers
1)natural fibres are obtained from nature . ex wool , silk
3)action of heat , tensile strength, electrical conductivity
4)wool , cotton ,jute
5) it can be obtained from animal skin like wool and from plants
6) punjab , Madhya Pradesh etc
7) fibres made by man example - linen
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Answer:
1.Natural fibers are made from plant, animal and mineral sources.Natural fibers can be defined as substances produced by plants and animals that can be spun into filament, thread or rope and in a next step be woven, knitted, matted or bound. The oldest fibres used by mankind are flax, cotton, and silk, but even jute and coir have been cultivated since antiquity
e.g. Cotton, Silk
2. the fibre which are made in factories by using certain chemicals is known as man made fibres. example - nylon ,rayon
3. Manmade fibers are used everywhere for apparel, fabrics, home furnishing, industrial equipments, medical equipments, fire blocking, filtering, auto industry etc.
4. wool, cotton, jute.
5. Natural fibers come from many sources. These sources can include plants, animals, and minerals. We are probably most familiar with plant and animal fibers from a consumer standpoint. Common natural fibers sourced from the plant kingdom include cotton, flax, hemp, bamboo, sisal, and jute
6. In India, cotton is grown in 9 major cotton growing States viz. Punjab, Haryana and Rajasthan in Northern zone, Gujarat, Maharashtra and MP in Central zone and Andhra Pradesh, Karnataka and Tamil Nadu in Southern zone.