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तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ७

What are the major steps involved in this wool factory. - Science

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प्रश्न

What are the major steps involved in this wool factory.

थोडक्यात उत्तर
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उत्तर

  1. The processing of wool involves five major steps.
  2. They are as follows Shearing, Grading (or) Sorting, Washing (or) Scouting, Carding and Spinning.
  3. Shearing:- The fleece of the sheep is removed from its body. This is called shearing.
  4. Grading (or) Sort:- The fleece from the same sheep may be different from different
    parts of the body. It is sorted out into separate piles of similar nature. This is known as Grading (or) Sorting.
  5. Washing (or) Scouts: The sheared skin is washed thoroughly with soap (or)
    detergents to remove dirt, dust and grease.
  6. Carding:- The dried wool is carefully removed. These fibres then passed through the rollers which are covered with fine sheet of thin wire teeth. This process arranges the wool into a flat sheet called a web.
  7. Spinning:- The web is drawn into narrow strand and then passed through spinning machines. The spinning machines twist the strands into yarn. The yarn is wound to form balls of wool. This yarn is either weaved into fabric (or) retained for knitting.
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Animal Fibres: Wool
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पाठ 5: Animals in Daily Life - Evaluation [पृष्ठ ९१]

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सामाचीर कलवी Science - Term 3 [English] Class 7 TN Board
पाठ 5 Animals in Daily Life
Evaluation | Q VIII. 3. | पृष्ठ ९१

संबंधित प्रश्‍न

You must be familiar with the given nursery rhymes

Baa baa black sheep, have you any wool.

Answer the following:

Which parts of the black sheep have wool?


What is meant by term Rearing?


What is meant by term Shearing ?


Given below is a sequence of steps in the processing of wool. Which are the missing steps? Add them

Shearing, __________, sorting, ______________________________


______ is a non-biodegradable material.


True or False – If False give the correct answer

Wool is the fibre derived from the silk worm.


True or False – If False give the correct answer

Ahimsa silk is otherwise known as Mulberry silk.


What are the two types of fibres that are obtained from animals?


What is shearing?


What are the characteristics of wool? Give any three.


State whether the following statement is True or False. If false, correct them.

In the process of obtaining wool from fleece, sorting is done after scouring.


How do the hair of certain animals help in keeping their bodies warm?


Figure shows three rings of circles with letters in them. Some of these letters in each ring can form the name of one wool yielding animal. Find the names of these animals.


A wholesale woollen fibre dealer gets the woollen fibre of different textures sorted for various purposes. Match the items in Column I with the woollen fibre in Column II.

Column I Column II
(a) Pashmina shawl (i) Camel wool
(b) Woollen carpet (ii) Angora wool
(c) Baby blanket (iii) Kashmir goat
(d)  Woollen sweater (iv)  Sheep wool

The scouting process during the processing of wool refers to ______.


The process called ______ involves the removal of dried wool.


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