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Published on: 14/09/2019
Fibre to Fabric
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Questions + Answers key
Take MCQ Science Test

1.
Why do we not prefer wearing clothes made of the jute fibre?
2.
The following is an answer given by Boojho to a question asked by his teacher-"Cotton, wool, silk and jute are classified as natural fibres whereas nylon and polyester are classified as synthetic fibres."
Can you tell what question the teacher has asked?
3.
What are synthetic fibres? Give examples.
4.
What is weaving? Name the device that is used for weaving.
5.
Besides the textiles, what is the other major use of cotton?
6.
In ancient times stitching was not known. People used to simply drape the fabrics around different parts of their body. Even today a number of unstitched fabrics are used by both men and women. Can you give four such examples of clothes?
7.
Write two characteristic properties of cotton.
8.
What is retting?
9.
Boojho knows that burning of cotton yarn gives an odour similar to that from burning paper. He is wondering if he can assume that paper is also made from plants. How is its burning different from other yarns?
10.
Have you seen any fabrics that are made of the fibres on the outer covering of coconut? What are these fibres normally used for?
11.
Write the name of the season in which jute crop is cultivated.
12.
Out of cotton, nylon, flax and wool which is not a natural fibre?
13.
Once, Paheli visited a tailor shop and brought home some cuttings of fabric to study their properties. She took two pieces and found that one of the pieces were shrinking when it was burnt with a candle. However, the other did not shrink on burning. Can you help her to find out which of the two was a cotton fabric and which a silk fabric?
14.
In which states of India cotton is grown?
15.
Are the cotton and jute obtained from animals?
1.
We do not prefer wearing clothes made of the jute fibre because jute fibre is very coarse and rough which hurts the skin.
2.
The teacher has asked to classify the fibres as natural and synthetic fibres.
3.
Man-made fibres are called synthetic fibres, e.g., Nylon, rayon, polyester etc.
4.
The process of arranging two sets of yarns together to make a fabric is called weaving. The device used for weaving are looms.
5.
Cotton is also used in hospitals as absorbent and for preparing bandages.
6.
Saree, lungi, dupatta and towel.
7.
(i) Cotton is a soft fabric. It lets air pass through it.
(ii) The sweat absorbed by cotton fabric evaporates and so it cools the body.
8.
Jute stems are immersed in water for rotting, as jute fibres can be extracted from the rotten stems easily. This process is known as retting.
9.
Cotton yarns burn without shrinking or melting. They give an odour similar to that from burning paper.
Silk yarns burn with shrinking but do not melt.
They have the odour of charred meat.
Wool yarns burns with shrinking but do not melt.
They have strong odour of burning hair.
Synthetic yarns burn with shrinking and also melt.
They give out an odour similar to burning plastics.
10.
These fibres are normally used for a variety of clothing items by using process of spinning, weaving and knitting.
11.
Jute crop is cultivated in the rainy season.
12.
Nylon is not a natural fibre, it is a synthetic fibre.
13.
Cotton fabric does not shrink or melt but silk fabric shrinks on burning.
14.
In Maharashtra, Karnataka, Madhya Pradesh, Gujarat, Tamilnadu, etc. cotton is grown.
15.
No, cotton and jute are obtained from plants.
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