Tag: fibre to fabric: plant fibre

Quizzes (7) Questions (99)

Questions Related to fibre to fabric: plant fibre

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

The fruits of cotton plants are called:

  1. calotropis

  2. cotton bolls

  3. xanthiun

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cotton bolls.

The fruit, called bolls, then begin to develop. These green, immature bolls are a segmented pod containing approximately 32 immature seeds from which the cotton fibres  will grow. The boll is considered a fruit because it contains seeds.

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

In which of the following, polymer chains are held with hydrogen bonds?

  1. Thermoplastics

  2. Fibres

  3. Thermosetting polymers

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

$Fibres$ are the thread forming solids which possess high strength and high modulus. This characteristic is attributed to the strong intermolecular forces like hydrogen bonding.

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

Weaving is the process of 

  1. Separating seeds from cotton bolls

  2. Spinning of yarn

  3. Arranging two sets of yarn together to make a fabric

  4. Immersing stems of jute plant in water
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Weaving is a method of textile production in which two distinct sets of yarns or threads are interlaced at right angles to form a fabric or cloth. Cloth is made by crossing two sets of threads over and under each other. The two sets of threads are called warp and weft.

Therefore, the correct answer is option C.

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.