NCERT Exemplar Problems Class 6 Science – Fibre to Fabric
Paheli wants to present her friend a gift made of plant fibre. Which out of the following will she select?
(a) Jute bag
(b) Woollen shawl
(c) Silk saree
(d) Nylon scarf
(a) Jute bag
Jute bag is made up of plant fibre. Wool is most commonly obtained from sheep (animal fibre). Silk fibre is obtained from silkworm (animal fibre). Nylon is a synthetic fibre.
Which statement out of the following is incorrect?
(a) Use of charkha was popularised by Mahatma Gandhi as a part of the Independence movement
(b) In India, jute is mainly grown in Kerala and Punjab
(c) To make fabric, the fibres are first converted into yarns
(d) Sufi Saint Kabir was a weaver
(b) In India, jute is mainly grown in West Bengal, Bihar and Assam.
Which of the following materials did people use in ancient times for making clothes?
- Leaves of trees
- Metal foils
- Animal skins and furs
(a) (1) and (2)
(b) (1) and (3)
(c) (2) and (3)
(d) (1) and (4)
(d) (1) and (4)
In ancient times, people used the bark and big leaves of trees or animal skins and furs to cover themselves.
Which of the following is not a natural fibre?
(a) Cotton (b) Jute (c) Nylon (d) Flax
Cotton, flax and jute are the natural fibres obtained from plants. Nylon is a synthetic fibre.
Which set of substances is not used for making fibres?
(a) Silk, chemicals
(b) Yak hair, camel hair
(c) Husk, bones
(d) Flax, wool
(c) Husk and bones are not used for making fibres.
Substances in options (a), (b) and (d) are used for making fibres.
Boojho went to a cloth shop. There he found a fabric which was smooth to touch, had vibrant colour and shine. The fabric could be
(a) cotton (b) wool
(c) silk (d) jute
(c) Silk fibre is smooth to touch, has vibrant colour and shine. Cotton is light and reasonable smooth. Wool is fluffy and jute is rough.
Which part of the jute plant is used for getting jute fibre?
(a) Flower (b) Stem
(c) Fruit (d) Leaf
(b) Jute fibre is obtained from the stem of the jute plant.
Yarn is woven to get fabric using
(a) charkha (b) spinning machines
(c) looms (d) knitting needles
(c) The weaving of yarn to make fabrics is done by using ‘looms’.
Loom is a device used for making fabrics by weaving yarn or threads.
Beera is a farmer. His field has black soil and the climate is warm. Which fibre yielding plant should he grow in his field?
(a) Jute (b) Cotton
(c) Coconut (d) Wool
(b) Cotton fibre comes from the cotton plants and cotton crop is usually grown at places having black soil and warm climate. So, Beera should grow cotton plant in his field.
The correct sequence to get cloth is
(a) fibre -> fabric -> yarn (b) fibre —> yarn -> fabric
(c) fabric —> yarn fibre (d) yarn fibre —> fabric
(b) The correct sequence to get cloth is fibre ->yarn -> fabric.
- Fibres are first converted to yarn by the process of spinning.
- Fabric is made from yarn by the process of weaving or knitting.
Boojho wants to make yarn from fibre at home. Which of the following will he use to carry out the task?
(a) Powerloom (b) Handloom
(c) Charkha (d) Knitting needles
(c) Hand operated device which is used for spinning cotton and making yarn is spinning wheel or charkha. So, Boojho will use charkha to make yarn from fibre at home.
Very Short Answer Type Questions
Yarn, fabric and fibres are related to each other. Show the relationship by filling the blanks in the following sentence.
Fabric of cotton saree is made by weaving cotton which in turn is
made by spinning thin cotton
Some terms related to fabrics are jumbled up and given below. Write them in their correct form.
(a) Onttoc (b) Sinnping (c) Vingwea (d) Bisref
The correct form is given below :
(a) Cotton (b) Spinning
(c) Weaving (d) Fibres
State whether the following statements are true or false. If false, correct them
(a) Silk is a plant fibre.
(b) Jute is obtained from the leaves of a plant.
(c) Weaving is a process of arranging two sets of yarns together.
(d) Cotton yarn on burning gives an odour similar to that of a burning paper.
Silk is a animal fibre which is obtained from silkworm.
Jute is obtained from the stem of a jute plant.
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?
The teacher has asked, the following type of question,
Classify the following fibres as natural and synthetic.
Polyester, jute, wool, nylon, silk, cotton.
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 was 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 was a silk fabric?
If a piece of cloth shrinks on burning, then the fabric is silk and the other fabric is cotton because cotton fabric does not shrinks on burning.
One way of making fabric from yarn is weaving, what is the other?
Knitting is the other way of making fabrics from yarn. In knitting, a fabric is made by interlocking loops of single yarn with knitting needles or machines.
Short Answer Type Questions
Boojho with perfect eyesight was finding it difficult to pass a thread through the eye of a needle. What can be the possible reason for this?
If it is difficult to pass a thread through the eye of a needle then it is possible that the end of the thread may be separated into a few thin strands or the thread may be quite thick.
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?
Saree, dhoti, lungi, turban, dupatta, towel, etc are the examples of such clothes.
Match articles given in Column I with the articles of Column II.
The correct matching is as given
(a)-(ii), (b)-(iii), (c)—(I), (d)-(iv)
Fill in the blanks to complete the life story of cotton fibre.
My parents, cotton plants were grown in …………… soil and ……….. climate. The plants bore fruits called ………… I, the cotton fibre was separated from seeds in the cotton bolls by the process of ………….. Other cotton fibres and myself were made into yarn by the process of ………… The yarn was …………. to give beautiful colours and then ………. to get cotton fabric.
black, warm, cotton bolls, ginning, spinning, dyed, woven
Match the terms given in Column I with the statements given in Column II.
The correct matching is as given
(a)—(v), (b)—(i), (c)—(vi), (d)—(ii), (e)—(iii), (f)—(iv)
Fill in the names of useful items made from jute fibres in the following figure. One such example is given.
The name of the useful items made from jute fibres in the given figure.
Long Answer Type Questions
A cotton shirt, before it reaches you, completes a long journey.
Elaborate this journey starting from cotton bolls.
Cotton is the most important in all plant fibres, used to make clothes. Cotton shirt can be prepared by following steps:
The making of cotton shirt is a long process. From cotton bolls, cotton is usually picked up from the plants in the fields usually by hand. Fibres are then separated from the seeds by combing. This process is called ginning
In spinning processes, the fibres from a mass of cotton wool are drawn out and twisted. This brings the fibres together to form a long and twisted thread called ‘yarn’.
In weaving process, cotton fabric is made by arranging two sets of cotton yarns at right angles to one another. Weaving is done on looms. Now, on sewing this cotton fabric by needle on sewing machine we get the cotton shirt.
Describe the two main processes of making fabric from yarn.
The two main processes of making fabric from yarn are weaving and knitting.
Weaving It is a process of making fabric (or cloth) by arranging two sets of yarns passing in one direction with other yarns at right angle to them.
In other words, two sets of yarns are woven to make a fabric. Weaving of fabric is done on looms. The looms are either hand operated or power operated.
Knitting It is a process of making a fabric by interlocking loops of single yarn with knitting needles or machines.
Knitting fabrics are made of a single yarn running throughout the fabric. Socks and many other clothing items are made of knitted fabrics.