Tag: fibres from animals

Questions Related to fibres from animals

During fiber making _______ can occur.

chemistry animal fibre wool - animal fibre wool fibres from animals

  1. physical hazards

  2. chemical hazards

  3. biological hazards

  4. none of these

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Correct Option: A
Explanation:

The process of Fibre making involves a lot of physical hazards such as physical injuries during the process, heat, noise, dust, etc.


Hence the option A is correct.

The fleece of the sheep along with a thin layer of skin is removed from its body.This process is called___________.

chemistry animal fibre wool - animal fibre wool fibres from animals

  1. shearing

  2. threading

  3. rearing

  4. breeding

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Correct Option: A
Explanation:

The fleece of the sheep along with a thin layer of skin is removed from its body. This process is called shearing. Usually, hair are removed during the hot weather which enables the sheep to survive without their protective protective coat of hair.


Hence, the correct option is $\text{A}$

 Which of the following does not yield wool? 

chemistry animal fibre wool - animal fibre wool fibres from animals

  1. Camel

  2. sheep

  3. goat

  4. woolly dog

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Correct Option: D

Which of the following represents correct statement(s)?

chemistry animal fibre wool - animal fibre wool fibres from animals

  1. Two sets of yarn are woven to make a fabric.

  2. The weaving of fabric is done in looms.

  3. The looms are either hand operated or power operated.

  4. All of the above

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Correct Option: D
Explanation:

All of these represent correct statement 

Hence,
option $D$ is correct answer.

Select the correct statement from the following.

chemistry animal fibre wool - animal fibre wool fibres from animals

  1. polyester is obtained from plant stem

  2. jute is the outer covering of coconut

  3. spinning is a process of making fibers

  4. the yarn is made from fibers

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Correct Option: D
Explanation:

Yarn is made up from fibers.

Hence, 
option $D$ is correct answer.

Which kind of wool is common in Tibet and Ladhak? 

chemistry animal fibre wool - animal fibre wool fibres from animals

  1. Yak

  2. sheep wool

  3. Angora wool

  4. Pashmina wool

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Correct Option: C

What is scouring ?

chemistry natural fibres wool - animal fibre wool fibres from animals

  1. Removal of dust, impurity and grease from hair of sheep

  2. Removal of water from hair of sheep

  3. Removal of other hairs from hair of sheep

  4. None of these

Show answer
Correct Option: A
Explanation:

$A$ 

This is the second step in obtaining fiber. The woolen fibers are thoroughly washed in big tanks to remove grease, dust and dirt by fully mechanized machines before the wool can be used for commercial purposes.. Wool straight off a sheep, known as "greasy wool” or "wool in the grease", contains a high level of valuable lanolin, as well as the sheep's dead skin and sweat residue, and generally also contains pesticides and vegetable matter from the animal's environment. 

Group of animals which gives wool are:

chemistry materials of daily use wool - animal fibre wool fibres from animals

  1. Sheep, goat, camel and yak

  2. Sheep camel, lion and rabbit

  3. Rabbit, silkworm, buffalow and cow

  4. Goat, cat, sheep and camel

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Correct Option: A
Explanation:

There are many animals that bear a thick coat of hair on their body which gives wool to us for example sheep, goat, camel and yak.

Which of the following is/are Indian breed of sheep?

chemistry materials of daily use wool - animal fibre wool fibres from animals

  1. Beetal

  2. Barbari

  3. Jamunapari

  4. all of them

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Correct Option: D
Explanation:

$Beetal, Barbari, Jamunapari$ all are Indian breeds of sheep. Beetal are found mainly in the states of Punjab, Barbari is found in Delhi, Uttar Pradesh, Gurgaon, Karnal, panipat and Rohtak in Haryana state and Jamunapari breeds are found mainly in the state of Uttar Pradesh.

Which of the following are fleece and wool-bearing animals?

chemistry materials of daily use wool - animal fibre wool fibres from animals

  1. Sheep and goat

  2. Camel and Yak

  3. Both A and B

  4. none of them

Show answer
Correct Option: C
Explanation:

Sheep, goat, Camel, Yak, etc. bear hair of two different types coarse hair and fine soft hair. Fine soft hair is found close to the skin in these animals. The fine soft under hair is called fleece. Fibre for wool is obtained from the fleece (hair) of such animals and hence such animals are called wool-bearing animals.