Tag: fibres

Quizzes (1) Questions (80)

Questions Related to fibres

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

Which of the following is true?

  1. Cellulose is made up of glucose units.

  2. Weaving and knitting are two process to get plastic.

  3. Plastics get corroded easily.

  4. Plastics are not polymers.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cellulose is made up of glucose units by glycosidic bonds.

Weaving and knitting are used to make silk fiber.
Plastic is non-corrosive and it is a polymer of the various compound.
Example: PVC, bakelite, etc.

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 materials of daily use classification of fibres fibres history of fabric

Acrylic is used for making carpets and blankets.

  1. True

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

Acrylic fibers are synthetic fibers made from a polymer (polyacrylonitrile) with an average molecular weight of $\sim100,000$, about $1900$ monomer units. Strong and warm, acrylic fiber is often used for sweaters and tracksuits and as linings for boots and gloves, as well as in furnishing fabrics and carpets. It is manufactured as a filament, then cut into short staple lengths similar to wool hairs, and spun into yarn.
option A is correct

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

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

  1. True

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

After people began to settle in agricultural communities, they learnt to weave twigs and grass into mats and baskets. Vines, animal fleece or hair were twisted together into long strands. These were woven into fabrics.

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

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

  1. grass, twigs

  2. cotton, jute

  3. twigs, grass

  4. jute, cotton
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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

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

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

  1. Libya

  2. Egypt

  3. Sudan

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

Egypt is known as the oldest agricultural civilization. Due to less rainfall, river Nile was used as a source of water for agriculture. Hence, in ancient Egypt, cotton as well as flax were cultivated near the river Nile and were used for making fabrics.