Write various steps for processing fibres into wool

cbse
cbse-class-7-science
fibre-to-fabric

#1

Write various steps for processing fibres into wool.

Answer:
The various steps for processing fibres into wool are as follows:

  • Shearing: The tleece of the sheep along with a thin layer of skin is removed from its body.
  • Scouring: The sheared skin with hair is thoroughly washed in tanks to remove grease, dust and dirt.
  • Sorting: The hairy skin is sent to a factory where hair of different textures are separated or sorted.
  • The small fluffy fibres, called burrs, are picked out from the hair.
  • The fibres can be dyed in various colours, as the natural fleece of sheep and goats is black, brown or white.
  • The fibres are straightened, combed and rolled into yarn.