write few sentences appreciating the process from wool shearing to woollen fabric
Answers
Answer:
L.H.S. = x2 – y2
= (p sec θ + q tan θ)2 – (p tan θ + q sec θ)2
= p2 sec θ + q2 tan2 θ + 2 pq sec 2 tan 2 -(p2 tan2 θ + q2 sec2 θ + 2pq sec θ tan θ)
= p2 sec θ + 2 tan2 θ + 2pq sec θ tan θ – p2 tan2 θ – q2 sec θ – 2pq sec θ tan θ
= p2(sec2 θ – tan2 θ) – q2(sec?2 θ – tan2 θ) =
= p2 – q2 …[sec2 θ – tan2 θ = 1
= R.H.S.hii
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Answer:
WOOL AND ITS EXTRACTION - DEFINITION
Wool is one of the most important animal fibers which are used as a textile fibre. Woolen fabric holds a greater market than other textile fabrics. Wools are mainly obtained from animals like sheep, angora goats, yak.
Steps to Obtain Wool from Sheep:
1. Shearing
2. Scouring
3. Sorting
4. Fibre called burr is picked out from the hair
5. Dying
6. Spinning
CONVERSION FROM FIBRES TO WOOL - DEFINITION
The process of making fibre into wool follows shearing, scouring, sorting, cleaning of burrs, dyeing, straightening, combing and finally rolling into yarn.
SHEARING, SCOURING, SORTING - EXAMPLE
Shearing: Shearing is when the animals fleece is cut off; this does not hurt them.
Scouring: Before yarn can be spun, the raw wool is scoured to remove dirt, grease and sweat.
IDENTIFY OCCUPATIONAL HAZARDS IN WOOL INDUSTRY - EXAMPLE
Workers in wool industry get infected by a bacterium, anthrax, which causes a fatal blood disease called sorters disease.