F. Long Answer Questions :
3. Describe the production of wool.
4. Explain the process to option silk from the cocoon.
5. Explain the life cycle of silkworm.
6. What are the health hazards of the workers of the wool and the silk industries?
1. How do you classify fibres? Explain giving examples.
2. State the uses and occupational hazards of silk industry.
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Answers
Answer:
1. fibre can be classified into two main categories natural and synthetic. Explanation: natural fibres are obtained from Natural Sources such as plants and animals while those which are developed by human beings are called synthetic fibres examples nylon rayon and polyester are synthetic fibres .
2. The rearers in silk industry are engaged in several types of tasks and get exposed to multiple physical, chemical, and biological agents, which make them vulnerable to various health problems that include injuries, musculoskeletal disorders, allergies, eye irritation, and respiratory diseases.
3.Wool is obtained from this fleece. Shearing is the first step in processing fibre into wool. ... Once the dyeing process is complete, the fibres are straightened, combed and rolled into yarn. The longer fibres are made into wool for sweaters, while the shorter fibres are spun and woven into woollen cloth.
4. Cocoons of silk moth are used to obtain the silk fibres. These cocoons are kept under the sun or boiled or exposed to steam. The silk fibres is then separated. This process of obtaining wool from the cocoons is called reeling the silk.
5. The silkworm is the larva stage of the silk moth's life cycle. Moths lay eggs which develop into the silkworm larvae, grub or caterpillar (commonly called silkworms). They eat for 20-30 days, consuming large amounts of mulberry leaves, and molt through four changes of skin or 'instars'.
6. Respiratory diseases like asthma, bronchitis etc., are very common among these workers. It is because they inhale small hair while sorting and scouring.
The workers suffer from various skin infections.
Other health problems include headache, fever, back pain, neck pain etc.
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Answer1----- this is the process of removal of release from the skin of sheep. the fridge is then was to removable dirt ,dried perspition penned the jolk. this is called scouring.After scouring the please of different length find 10 and structure is sorted and graded by hand into several into several pills of similar nature. the fibre after sorting are untongled the Nehru students are passed through spinning machine where the students are twisted and made into yarn. creamy bhul fibre mein v died in different colours as desired
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3-----aap female monthly nearly 500 egg on green mulberry leaves. in a few days the egg hatch into your caterpillar after feeding Lavi aur caterpillar after feeding larvae grew into big caterpillar cold silkworm. the growth of