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HCS (Haryana)Prelims2023General Studies
Question
Match List I with List II. List I (Process) A. Moulting B. Reeling C. Shearing D. Scouring List II (Description) 1. Process of extracting silk from cocoons 2. Process of removing of wool from the body of an animal 3. Process of washing the raw, sheared wool to get rid of grease, dirt and dust 4. Process of shedding out layer
Options
- A A-3. B-2. C-4. D-1
- B A-4. B-1. C-2. D-3
- C A-3. B-4. C-1. D-2
- D A-4. B-3. C-2. D-1
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Correct Answer
B A-4. B-1. C-2. D-3
Model Answer
- Moulting: It is the process by which an animal sheds a part of its body during specific stages of its life cycle. An arthropod moulting its exoskeleton is known as ecdysis. Arthropods must moult in order to get larger because their exoskeleton is rigid, making moulting required. For arthropods, moulting is a crucial but delicate moment.
- Reeling: The process of drawing silk fibre from the cocoon is called 'reeling'. The cocoons are cooked in hot water and the silk fibre is unwound from the cocoons. The silk consists of two proteins, the inner core of fibroin and an outer cover of gum sericin.
- Shearing: Shearing is the process of cutting or removing wool from an animal's body. The person who removes the wool is called a shearer. Shearing is generally done twice a year in Kashmir during the spring and autumn months. Sheep are washed at least two days before shearing to remove dirt, suint, and grease.
- Scouring: Scouring is the process of washing raw wool to remove grease, dirt, and dust. It involves all the steps associated with the process, including blending, opening, washing, drying, and packaging. It also includes the steps involved in cleaning up the effluent produced. The scouring process involves feeding greasy wool into a machine that continuously transports it through a series of 6-8 bowls containing wash liquor.