Answer the following questions:
1. What is wool? Name four wool bearing animals.
2. Which country is leading producer of wool? Where are sheep bred in India?
13. What determines the fineness of wool? Name two breeds of sheep which haveth
4. What is raw silk? How is it produced?
5. Why are the silk fibres lustrous?
6. Name two substances removed from raw wool before manufacturing yarn.
Answers
Answer:
1.Wool is the textile fiber obtained from sheep and other animals, including cashmere and mohair from goats, qiviut from muskoxen, hide and fur clothing from bison, angora from rabbits, and other types of wool from camelids.
Australia
2.Australia is the highest wool producing country in the world. It is responsible for the production of 25% of the world's wool. According to the Department of Agriculture and Water Resources in Australia, the amount of wool produced in Australia in the year 2015-2016 was worth approximately $3 billion
This breed is mainly distributed all over Jodhpur & parts of Jaipur districts of Rajasthan. These sheep breed flocks are raised in Barmer& Bali districts of Rajasthan. These sheep's migrate to places in Uttar Pradesh, some districts of Madhya Pradesh & some parts of Maharashtra
13.Many factors determine the quality (and value) of wool. These include fiber diameter, crimp, yield, color, purity, and staple length and strength. Fiber diameter, also called fineness, is the actual measurement of the thickness of the wool fiber. It is measured in microns (μm), which is one millionth of a meter. Merino and Wensleydale are the two breeds of sheep which have finest fleece.
4.The process of silk production is known as sericulture. ... Extracting raw silk starts by cultivating the silkworms on mulberry leaves. Once the worms start pupating in their cocoons, these are dissolved in boiling water in order for individual long fibres to be extracted and fed into the spinning reel.
5.Silk is made up of protein fibres produce by silk worms. They have a characteristic triangular arrangement of protein strands which give it a lustrous appearance. Also, the way in which it is woven into the fabric can enhance its luster
6.Using a suitable detergent, the fibres are cleaned from lanolin (an oily substance) and suint (the dried perspiration of sheep). The cleaned wool fibres are then dried and disentangled. Thereafter, they are drawn into a straight continuous thread. This process is called carding
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