Tag: fibres

Quizzes (1) Questions (80)

Questions Related to fibres

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

Animal fibers generally comprise of:

  1. collagen.

  2. keratin.
  3. both $A$ and $B$.

  4. triglycerides.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Animal fibers are natural fibers that consist largely of particular proteins. These proteins include collagen, keratin and fibroin.

examples include silk, sinew, wool, catgut, angora, mohair and alpaca.
The animal fibers used most commonly both in the manufacturing world as well as by the hand spinners are wool from domestic sheep and silk.

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

Bed sheets, curtains, tents, parachutes etc are made from :

  1. Natural fibres

  2. Synthetic fibres

  3. Yarn

  4. Plastics
Reveal answer Fill a bubble to check yourself
A,B Correct answer
Explanation

Fibres which are man-made are called synthetic fibres and which occurs naturally are called natural fibres. Rayon (synthetic fibre), when mixed with cotton (natural fibre), is used to making curtains, bedsheets etc. of clothes, ropes, seat-belts, curtains, sleeping bags, parachutes, tents etc.

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

Which of the following represents correct statement(s)?

  1. The fibers of some fabrics such as cotton, jute, silk and wool are obtained from plant and animals. These are called synthetic fibers.

  2. Cotton and jute are examples of fibers obtained from animals.

  3. Wool and silk fibers are obtained from plants.

  4. None of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The correct statements will be-


(A) The fibers of some fabrics such as cotton, jute, silk and wool are obtained from plant and animals. These are called natural fibers.

(B) Cotton and jute are examples of fibers obtained from plants.

(C) Wool and silk fibers are obtained from animals.

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

The botanical name of moonj plant is:

  1. Hibiscus moonja

  2. Saccharum moonja

  3. Gossypium

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

The botanical name of this plant is Sachatum moonja.


Moonj is obtained from the moonj grass. It is a grass found in arid areas and along river banks in India. It belongs to the family Gramineae.

Hence, option B is correct.

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

Use of charkha was popularized by Mahatma Gandhi as part of the Independence movement.

  1. True

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

Use of charkha was popularized by Mahatma Gandhi as part of the Independence movement. He encouraged people to wear clothes made of homespun yarn and disapprove of imported cloth made in Britain. Charkha is a handmade device used to spun yarn.

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

Which of the following is monomer of natural rubber?

  1. Isoprene

  2. Chloroprene

  3. Caprolactum

  4. Styrene
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Natural rubber is an addition polymer that is obtained as a milky white fluid known as the latex from a tropical rubber tree. Natural rubber is from the monomer isoprene (2-methyl-1,3-butadiene). Since isoprene has two double bonds, it still retains one of them after the polymerization reaction. Natural rubber has the cis configuration for the methyl groups. So, the correct option is A i.e. Isoprene.