Tag: fibres from animals

Quizzes (0) Questions (33)

Questions Related to fibres from animals

Multiple choice chemistry animal fibre wool - animal fibre wool fibres from animals

The correct order in the processing of wool is:

  1. $Shearing - sorting - scouring - fiber spinning - fiber dying - rolling$
  2. $Shearing - scouring - sorting - fiber spinning - fiber dying - rolling$
  3. $Shearing - scouring - sorting - fiber dying - fiber spinning - rolling$
  4. $Shearing - sorting - scouring - fiber spinning - rolling - fiber dying$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The correct order in the processing of wool is = $Shearing - scouring - sorting - fiber spinning - fiber dying -  rolling$

Multiple choice chemistry animal fibre wool - animal fibre wool fibres from animals

The sheared skin with hair is thoroughly washed in tanks to remove grease, dust and dirt. This is called :

  1. cleansing

  2. rearing

  3. shearing

  4. scouring
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Scouring,the term ‘scouring’ applies to the removal of impurities such as oils, wax, gums, soluble impurities and dirt commonly found in textile material to produce a hydrophilic and clean cloth.

Multiple choice chemistry animal fibre wool - animal fibre wool fibres from animals

The process of obtaining wool is:

  1. shearing, sorting, scouring and dyeing

  2. shearing, scouring, sorting and dyeing

  3. scouring, sorting, shearing and dyeing

  4. sorting, scouring, shearing and dyeing
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The various steps for processing fibers into wool are as follows:

  • Shearing: The fleece 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 the hair of different textures is separated or sorted.
  • The small fluffy fibers, called burrs, are picked out from the hair.
  • The fibers can be dyed in various colours, as the natural fleece of sheep and goats is black, brown or white.
  • The fibers are straightened, combed and rolled into yarn.

Multiple choice chemistry animal fibre wool - animal fibre wool fibres from animals

Silk fibre is obtained from :

  1. fleece of sheep

  2. cotton ball

  3. cocoon

  4. shiny jute stalk
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

$C$

Cocoon is a protective case of silk or similar fibrous material spun by the larvae of moths and certain other insects as a cover for the pupa. The cocoon is made of a thread of raw silk from $300$ to about \$900 m (1,000 to 3,000 ft)\$ long. The fibres are very fine and lustrous, about $10 μm (0.0004 in)$ in diameter.

Multiple choice chemistry animal fibre wool - animal fibre wool fibres from animals

Animal fibres are made of :

  1. cellulose

  2. protein

  3. fats

  4. animal cells
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Protein ,animal fibers  are natural fibers that consist largely of particular proteins. Instances are silk, hair/fur (including wool) and feathers. The animal fibres used most commonly both in the manufacturing world as well as by the hand spinners are wool from domestic sheep and silk.

Multiple choice chemistry animal fibre wool - animal fibre wool fibres from animals

Identify the Indian breeds of sheep:

  1. Lohi

  2. Marwari

  3. Nali

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Lohi and Marwari, 
The Lohi sheep is found in southern Punjab in India. It is used for its carpet quality wool and meat production. The body is white and the head is usually tan, black or brow.  Marwadi,the name originates from the home tract of the breed: Marwad. The breed resembles black-head Persian Sheep  but is smaller in size and has good fleece. Found in Jodhpur, Jalore,Nagapur,Peli and Barmer districts, extending up to Ajmer and Udayapur districts of Rajasthan and the Jeoria region of Gujrat The breed is being improved through selection for fleece weight and carpet quality.

Multiple choice chemistry animal fibre wool - animal fibre wool fibres from animals

The process of removing wool from sheep is called__________.

  1. Rearing

  2. Cearing

  3. Shearing

  4. Reeling
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

$C$, sheep shearing is the process by which the woolen fleece of a sheep is cut off. The person who removes the sheep's wool is called a shearer Typically each adult sheep is shorn once each year (a sheep may be said to have been "shorn" or "sheared", depending upon dialect). The annual shearing most often occurs in a shearing shed a facility especially designed to process often hundreds and sometimes more than $3,000$ sheep per day.