Tag: chemistry

Questions Related to chemistry

Wool fibre can be obtain from_________.

chemistry animal fibre wool - animal fibre wool fibres from animals

  1. sheep

  2. goat

  3. llama

  4. all of these

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Correct Option: D
Explanation:

Although $sheeps$ are associated with the production of wool, there are certain $goats$ that produce wool fibre. Fibres such as Mohair from Angora goats, cashmere wool from many breeds of goats. $Llamas$ produce very soft and lanolin free wool. 

The term sericulture is used for which of the following purpose? 

chemistry animal fibre wool - animal fibre wool fibres from animals

  1. Production of silk

  2. Production of raw silk

  3. Rearing of silkworm

  4. Refinement of silk fibre

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Correct Option: C
Explanation:

Sericulture, or silk farming, is the rearing of silkworms for the production of raw silk.

Shearing does not hurt the sheep because :

chemistry animal fibre wool - animal fibre wool fibres from animals

  1. the uppermost layer of the skin is dead

  2. the shearing machine do not touch the skin of sheep

  3. sheep cannot feel the pain

  4. None of the above

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Correct Option: A
Explanation:

The uppermost layer of the skin is dead.


Cutting or shaving the wool off of a Sheep is called shearing. Shearing doesn't usually hurt a Sheep. It is just like getting a hair cut.


 However, shearing requires skill so that the sheep is shorn efficiently and quickly without causing cuts or injury to the Sheep or shearer.


Hence the option A is correct.

Which kind of hazards are included in occupational hazards?

chemistry animal fibre wool - animal fibre wool fibres from animals

  1. Biological

  2. Chemical

  3. Physical

  4. All of these

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Correct Option: D
Explanation:

Occupational hazards are hazards experienced in the workplace. 


There are various types of occupational hazards depending on their nature namely, biological hazards, chemical hazards, physical hazards, psychosocial hazards.

Hence the option D is correct.

______ is the lung related disease.

chemistry animal fibre wool - animal fibre wool fibres from animals

  1. Silicosis

  2. Bronchitis

  3. Anemia

  4. None of these

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Correct Option: A
Explanation:

Silicosis is a form of occupational lung diseases a form of caused by inhalation of crystalline silica dust and is marked by inflammation and scarring in the form of nodular lesions in the upper lobes of the lungs.


It is a type of pneumoconiosis.

Hence the option A is correct.

Small fluffy fibres called ___________, are picked out from the hair.

chemistry animal fibre wool - animal fibre wool fibres from animals

  1. wool

  2. yarn

  3. burrs

  4. cotton

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Correct Option: C
Explanation:

Small fluffy fibres called $burrs$, are picked out from the hair.


Hence the option C is correct.

Once the fibres have been obtained, they are made into _____________ by twisting the strands together.

chemistry animal fibre wool - animal fibre wool fibres from animals

  1. cloth

  2. strips

  3. yarn

  4. wool

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Correct Option: C
Explanation:

Yarn, it is a long continuous length of interlocked fibres, suitable for use in the production of textiles,sewing, crocheting, knitting, weaving, embroidery and ropemaking. Thread of  is a type of yarn intended for sewing by hand or machine.

Fiber particles can deposit in the ________ .

chemistry animal fibre wool - animal fibre wool fibres from animals

  1. eyes

  2. ears

  3. lungs

  4. Throts

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Correct Option: C
Explanation:

Fibre particle can deposit in the lungs. 


This occupational disease is also known as silicosis. 

Silicosis is a form of occupational lungs disease caused by inhalation of crystalline silica dust and is marked by inflammation and scarring in the form of nodular lesions in the upper lobes of the lungs. 

It is a type of pneumoconiosis.

Hence the option C is correct.

What is occupational hazards?

chemistry animal fibre wool - animal fibre wool fibres from animals

  1. Hazards experienced at workplace

  2. Hazards experienced at home

  3. Hazards experienced at public place

  4. None of these

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Correct Option: A

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.