Tag: chemistry

Quizzes (490) Questions (9892)

Questions Related to chemistry

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

Linen fibre is obtained from __________.

  1. chia seeds

  2. cotton seeds

  3. flax plants

  4. cotton flowers
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Linen yarn is spun from the long fibers found just behind the bark in the multi-layer stem of the flax plant. In order to retrieve the fibers from the plant, the woody stem and the inner pith, which holds the fibers together in a clump, must be rotted away. 

The cellulose fiber from the stem is spinnable and is used in the production of linen thread, cordage, and twine.

So, option C is correct.
Multiple choice chemistry fibre to fabric: plant fibre classification of fibres fibres history of fabric

Which of the following represent(s) the characteristics of synthetic fibres?

  1. They dry up quickly.

  2. They are durable

  3. They are less expensive and readily available.

  4. They are easy to maintain
Reveal answer Fill a bubble to check yourself
A,B,C,D Correct answer
Explanation

 All of the following represent(s) the characteristics of synthetic fibres.
They dry up quickly.
They are durable
They are less expensive and readily available.
They are easy to maintain

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

To which of the following does the 4R principle apply the most?

  1. Synthetic fibre

  2. Natural fibre

  3. Metals

  4. Plastic
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Plastic is a man-made substance that cannot be broken down by natural microbial action. Hence, the 4R principle is applied to it. 

The 4 R principle is- ${\text{Refuse, Reduce, Reuse and Recycle}}$. This helps in reducing the harmful effect of plastic in the environment. 

Thus the correct answer is option A.
Multiple choice chemistry fibre to fabric: plant fibre classification of fibres fibres history of fabric

Bed sheets, curtain, tents, parachutes can be made from :

  1. Natural fibre

  2. Synthetic fibre

  3. Yarn

  4. Plastics
Reveal answer Fill a bubble to check yourself
A,B,C Correct answer
Explanation
Bed sheets, curtain, tents, parachutes are made from fabric like cotton, silk, nylon, rayon etc. and the fabric is a cloth produced by weaving or knitting textile fibers. 

These fibers can be obtained naturally from plant or animal sources like cotton seeds and silk, wool or can be synthesized like nylon or rayon.

Therefore, natural and synthetic fibers are used to make fabric.

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

Plastics are synthetic polymers and not used in fabric production.

Hence, option A, B and C are correct.
Multiple choice chemistry fibre to fabric: plant fibre classification of fibres fibres history of fabric

$X$ is a thread of filament from which $Y$ is made. If prepared from plants and animals, it is known as $Z$ fibres whereas by humans it is known as $W$ fibres. Synthetic fibres are nylon, rayon, polyester, acrylic etc.

What is $Z$?

  1. Plant fibre

  2. Animal fibre

  3. Natural fibre

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

Fibre is the basic unit of raw material having a suitable length, pliability, and strength for conversion into yarns and fabrics/cloth/material. 

A fibre of extreme length is a filament. Fibres can occur naturally or can be produced artificially. 

Here, X is a fibre, Y is the cloth/fabric. Z is the natural fibre and W is the artificial or human-made fibre.

Plant and animal fibre are natural fibres, and artificial fibre are man-made fibres such as rayon.

Therefore, option C is correct.