Long question/ answer
1. what do you understand by occupational hazard?
2. name the disease often develop in people working in silk industries?
3. define pupal stage of silkmoth?
4. give the burning characters of wool and silk fibre?
Answers
Answer:
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8 Keyboard Shortcuts For Quick Workbook Navigation
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Answer:
1. An occupational hazard is a hazard experienced in the workplace. ... Occupational hazard as a term signifies both long-term and short-term risks associated with the workplace environment and is a field of study within occupational safety and health and public health.
2. People working in silk industry usually suffer from respiratory and skin diseases. Respiratory diseases are a result of the various gases produced during the process and allergic components present in the moth and raw silk.
3. The pupal stage is the third stage in a silk moths life cycle. It is the stage, where the larva prepares it self to puapte and spins itself around a silk thread, after that a cocoon is formed with that silk thread and the larva is inside of the cocoon to protect itself from the ptedators of outside.
4. Wool is slow to ignite, burns with a characteristic small, flickering flame, sizzles and curls. ... The ash of silk appears in the form of round, crisp, shiny black beads, like the ash of wool can be crushed easily with fingers. The ash has an animal odor less pronounced than that of wool.