Tag: classification of fibres

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Questions Related to classification of fibres

Multiple choice chemistry materials of daily use classification of fibres fibres history of fabric

Which of the following represents incorrect statement(s)?

  1. Flax is a plant that gives natural fibres.

  2. In ancient Egypt, cotton as well as flax were cultivated near the river Nile and were used for making fabrics.

  3. In ancient times, stitching was known.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In ancient times, stitching was not known. People simply draped the fabrics around different parts of their body.

Multiple choice chemistry materials of daily use classification of fibres fibres history of fabric

Which of the following represents incorrect statement(s)?

  1. In ancient times, people used the bark and big leaves of trees or animal skins and furs to cover themselves.

  2. After people began to settle in agricultural communities, they learnt to weave twigs and grass into mats and baskets.

  3. Vines, animal fleece or hair were twisted together into log strands. These were woven into fabrics.

  4. The early Indians wore fabrics made out of silk that grew in the forest regions.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

option $D$ is correct  answer.

Multiple choice chemistry fibre to fabric: plant fibre classification of fibres fibres history of fabric

State whether true or false ;

Cotton and wool are obtained from cotton plant and sheep respectively.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cotton plants are grown for fibre and their seeds can be used for preparing cooking oil. 


Wool is a kind of animal fibre taken from hair of sheep and goats. 

The quality of wool fibres is assessed based on several characteristics including fibre length, fineness, colour, cleanliness, damage and surface scales. 

Therefore, option A is correct.

Multiple choice chemistry fibre to fabric: plant fibre classification of fibres fibres history of fabric
Fibre is a thread or filament from which cloth is made.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Fibre is a long and thin strand or thread from which cloth is made. 

Cloth is prepared by weaving/knitting of this thread together. Fibre can be natural or man-made. 

Natural fibres include cotton, hair, fur, silk, wool and man fibre include nylon, polyester, olefin etc.
Multiple choice chemistry fibre to fabric: plant fibre classification of fibres fibres history of fabric

Natural fibres are obtained from plants and animals whereas synthetic fibres are obtained by chemical processing of petrochemicals.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Natural fibres are hairlike raw material directly obtainable from an animal, vegetable, or mineral source and convertible into non woven fabrics such as felt or paper or, after spinning into yarns, into woven cloth. A natural fiber may be further defined as an agglomeration of cells in which the diameter is negligible in comparison with the length examples: cellulose types such as cotton, wood, grains, and straw.
Synthetic fibers are fibers are human-made by chemical synthesis, as opposed to natural fibers. In general, synthetic fibers are created by extruding fiber-forming materials through spinnerets into air and water, forming a thread. These fibers are called synthetic or artificial fibers. Some fibers (such as the diverse family of rayons) are manufactured from plant-derived cellulose and are thus semi-synthetic, whereas others are totally synthetic, being made from crudes and intermediates including petroleum, coal, limestone, air, and water.
therefore option A is correct

Multiple choice chemistry fibre to fabric: plant fibre classification of fibres fibres history of fabric

State whether true or false :

Synthetic fibres are also called as artificial or human made fibres.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Synthetic fibers are prepared by using chemicals. These are made of small units that join together to form long chains. 


Some of the examples of synthetic fibers are nylon, rayon, acrylic, polyester.
They are also called artificial or man-made or human-made fiber.

Hence, option $A$ is correct.