Fibre To Fabric - Class 6 Chemistry - Extra Questions

Name the process used to prepare fabrics from yarns.

The processes used to prepare fabrics are: 
(i) Weaving:-The process of arranging two sets of yarns together to make a fabric is called weaving.
(ii) Knitting: The process of arranging a single yarn to make a fabric is called knitting.


What is weaving?

The process of arranging two sets of yarns together to make a fabric is called weaving.


What is jute?

Jute is a fiber obtained from the stem of a jute plant. Jute fiber's primary use is in fabrics for packaging a wide range of agricultural and industrial commodities that require bags, sacks, packs, and wrappings. 


Name two hand-operated devices used for spinning.

Two hand-operated devices used for spinning are:
(i) Takli
(ii) Charkha
These are used to make yarn from cotton fibres.


What is spinning?

Spinning: A process of making yarn from fibers. In this process a mass of cotton wool fibers are drawn out and twisted. It is an art where the fiber is drawn out, twisted, and then wound onto a bobbin. By this, fibers come together to form a yarn. Spinning can be done by hand and charkha.


Explain the process of making yarn from fiber.

Yarns are made up of thin strands called fibers. The process of making yarn from fibers is called spinning. In this process, a mass of cotton wool is drawn out and twisted. This brings the fibers together to form yarn.
A simple device used for spinning is a hand spindle also called takli.


Give two examples of fibers which are obtained from 
i) Plants and
II) Animals

Cotton and jute fibers are obtained from plants.
Wool and silk fibers are obtained from animal.


What material you use for making wicks for oil lamps?

Cotton is used to make wicks for lamps. A candle wick is usually braided cotton that holds the flame of an oil lamp or candle. 

A candle wick works by capillary action, conveying ("wicking") the fuel to the flame.


What type of soil is used to grow cotton plants?

Black soil is used to grow cotton plants.


What are fruits of cotton plants called?

The fruits of cotton plants are called cotton bolls.


Define ginning of cotton.

The process of separating fibers from the seeds of cotton is called ginning of cotton.


Explain the method of knitting.

The process of making fabric by interlocking loops of single yarn with knitting needles or machines is called knitting. Knitting can be done by manual labour or by machines. A sweater is made by the process of knitting by using a single woollen yarn.


What is knitting?

The process in which a single yarn is used to make a piece of fabric is called knitting.


Name the states where jute plants are mainly grown in India.

The states where jute plants are grown in India are West Bengal, Bihar and Assam.


Where does cotton come from?

Cotton is obtained from the cotton balls of the cotton plant.  After maturing, these cotton balls burst and open up and from these cotton balls, cotton is handpicked. 
Fibers are then separated from the seeds by combing. This process is called ginning of cotton.


Name two items that are made from coconut fiber.

Two items that are made from coconut fiber are
(i) Ropes
(ii) Mats


From which part of the plant cotton and jute are obtained?

we can obtain:
(i) Cotton is obtained from the fruit of the cotton plants. The cottonseed is a fruit which on ripening splits open to release white fibers of cotton.

(ii) Jute is obtained from the stem of the jute plant.


How are fabrics prepared?

Preparation of fabrics involes following steps:
  • Obtaining fiber from plants or animals.
  • Fibers are converted into yarn by spinning
  • The fabric is made up of two set of yarns arranged together. The process of arranging two set of yarns together to make a fabric is called weaving.
  • When a single yarn is used, the fabric is prepared by knitting.


Are all fibers produced by plants?

No, only natural fibres are produced by plants.


What are looms?

The devices on which weaving of fabrics takes place are called looms. The looms are either hand operated or power operated.


List the steps involved in the preparation of fabric.

The following steps are involved in the preparation of fabrics:
(i) Obtaining fibre,
(ii) Preparation of yarn from fibres by spinning,
(iii) When two sets of yarn are involved, yarns are woven on looms to make a fabric. When a single yarn is used, the fabric is prepared by knitting.


What happens when a yarn from a torn sock is pulled?

When we pull yarn from a torn sock then a single yarn gets pulled out continuously as the fabric gets unraveled. Socks are made up of knitted fabrics from a single yarn.


Describe the process of the formation of yarn from cotton wool.

The cotton wool is obtained from cotton plants. The cotton plants are grown in fields. They are usually grown at the places having black soil and warm climate. The fruits of the cotton plants called cotton bolls are about the size of lemons. After maturing, the bolls burst open and seeds covered with cotton fibres can be seen. From the cotton bolls, cotton is picked by hands. Fibres are then separated from the seeds by combing. This process is called ginning of cotton. It is done by hand or by machines. These fibres are then converted into yarn.
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What happened when people began to settle in agricultural communities?

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


Where were the cotton and flax plants cultivated in ancient Egypt?

Cotton and flax plants were cultivated near the river Nile in ancient Egypt.


Plant fibres are obtained from ________ and ________.

Plant fibres are obtained from fruits and stems.
Cotton fibre is obtained from the fruit of cotton plant and jute fibre is obtained from the stem of jute plant


Are all fibres produced by plants?

No, all fibres are not produced by plants. 
Example: Silk is obtained from silkworms.


From which parts of the plant cotton and jute are obtained?

(a) Cotton is obtained from the fruit of the cotton plant. Cottonseed is a fruit which on ripening splits open to release white fibres of cotton.

(b) Jute is obtained from the stem of the jute plant.


What were the materials used by people in ancient times in place of clothes?

People in ancient times used the bark and big leaves of trees or animal skin and furs in place of clothes.


Rana wants to buy shirts for summer. Should he buy cotton shirts or shirts made from synthetic material? Advise Rana, giving your reason.

Rana is advised to buy cotton shirts for the summer season because cotton absorbs the sweat and the pores in the cotton allows easy evaporation and keeps our body cool whereas synthetic fibres do not absorb the sweat and they are very uncomfortable to wear in summers.


Explain the process of converting yarn to fabric.

There are many ways for converting yarn to fabric. Weaving and knitting are the two main processes for converting yarn to fabric.
$$\text{Weaving}$$ is the process of arranging two sets of yarns together to make fabrics. It is done on looms that are either hand operated or power operated.
$$\text{Knitting}$$ is a process in which a single yarn is used to make a piece of fabric. Socks and many clothing items are made of knitted fibers. It can be done by hand or also on machines.


________ is spun thread used for sewing, weaving or knitting.

Yarn is spun thread used for sewing, weaving, or knitting. Yarn is a long continuous length of interlocked fibers, suitable for use in the production of textiles, sewing, crocheting, knitting, weaving, embroidery, or rope making. Thread is a type of yarn intended for sewing by hand or machine.



State True or False.

Fabric is the material produced by weaving or knitting yarn fibres.

It is an art where fiber is drawn out, twisted, and then wound into a bobbin. This brings the fibers together to form a yarn. The two main processes are weaving and knitting. 
Therefore, the given statement is true which is, Fabric is the material produced by weaving or knitting yarn fibers.


The cloth made up of weaving is preferred instead of machine made. Why?

Although cloth made from weaving is very costly as well as laborious when compared to machine made cloth, still cloth made from weaving is preferred. It is because machine made cloth are prepared in bulk and hence lack the minute detailing as well as treatment. Hence, they do not last long. However the clothes prepared from weaving have high strength, durability and uniqueness, thus last long


Describe the process of spinning and weaving.

Spinning: The process of making yarn from fibres is called spinning. In this process fibres from a mass of cotton wool are drawn out and twisted. By this fibres come together to form a yarn. Spinning can be done by hand, by takli and charkha. On a large scale, spinning is done with the help of machines.
Weaving: The process of arranging two sets of yarns together to make a fabric is called weaving. The process of weaving can be done on looms. The looms are either - hand operated or power operated.


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-
a) Cotton
b) Spinning
c) Weaving
d) Fibres


Yarn, fabric, and fibres are related to each other. Show the relationship by filling the blanks in the following sentence.
The fabric of cotton saree is made by weaving cotton ..............
Which in turn is made by spinning thin cotton ..............

Yarn, fibre.
The fabric of cotton saree is made by weaving cotton yarn.
Which in turn is made by spinning thin cotton fibre.


State whether the following statements are true or false. If false, correct them.
(a) Silk is a plant fiber.
(b) Jute is obtained from the leaves of a plant.
(c) Weaving is the process of arranging two sets of yarn together.
(d) Cotton yarn on burning gives an odor similar to that of a burning paper.

a) The given statement is false. Silk is an animal fiber, obtained from silkworms.
b) The given statement is false. Jute is a plant product obtained from the stem of a plant.
c) The given statement is true.
b) The given statement is true.


One way of making fabric from yarn is weaving, what is the other?

The other process of making fabric from yarn is knitting. A single yarn is converted into a whole fabric by knitting and weaving.


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?

Boojho couldn't pass the thread through the eye of a needle despite having the perfect eyesight because the fault was in the thread, either it was quite thick or the end of the thread was split into two.


Describe the two main processes of making fabric from yarn.

The two main processes of making fabric from yarn are-
$$\cdot$$ Weaving- Weaving is the process of arranging two sets of yarn together to make a fabric.
$$\cdot$$ Knitting- In this process, a single yarn is turned into a fabric.


In ancient times stitching was not known. People used to simply drape the fabric around different parts of their bodies. Even today several unstitched fabrics are used by both men and women. Can you give four such examples of clothes?

The examples of unstitched fabrics cloths that are used by men and women these days also are Dhoti, Lungi, Saree, Turban.


Match the terms given in Column I with the statements given in Column II.
Column IColumn II
a) Weaving(i) A single yarn used to make a fabric.
b) Knitting(ii) Combing of cotton fibres to remove seeds.
c) Spinning(iii) Yarns are made from these thin strands.
d) Ginning(iv) These are spun from fibres and then used to make fabrics.
e) Fibre(v) Process of arranging two sets of yarns together to make a fabric.
f) Yarn(vi) Process of making yarn from fibres.

The correct match is-
$$\begin{array}{l}Column\;I\;\;\;\;\;\;\;\;\;\;Column\;II\\a)\;Weaving\;\;\;\;\;(v)\;Process\;of\;arranging\;two\;sets\;of\;yarns\;together\;to\;make\;a\;fabric.\;\\b)\;Knitting\;\;\;\;\;\;(i)\;\;A\;single\;yarn\;used\;to\;make\;a\;fabric.\\c)\;Spinning\;\;\;\;\;(vi)\;Process\;of\;making\;yarn\;from\;fibres.\\d)\;Ginning\;\;\;\;\;\;(ii)\;Combing\;of\;cotton\;fibres\;to\;remove\;seeds.\\e)\;Fibre\;\;\;\;\;\;\;\;\;\;(iii)\;Yarns\;are\;made\;from\;these\;thin\;strands.\;\\f)\;Yarn\;\;\;\;\;\;\;\;\;\;(iv)\;These\;are\;spun\;from\;fibres\;and\;then\;used\;to\;make\;fabrics.\end{array}$$


A cotton shirt, before it reaches you, completes a long journey. Elaborate on this journey starting from cotton bolls.

The process of making a cotton shirt is-
$$Picking \rightarrow Ginning \rightarrow Spinning \rightarrow Weaving \rightarrow Sewing$$

i. Picking- Cotton bolls are picked up from the plants in the fields by hand.
ii. Ginning- Separation of fibres from seeds by combining.
iii. Spinning- Fibres are extracted out from the big cotton wool and are twisted. This changes the fibres into strong yarn.
iv. Weaving- A fabric of cotton is made after the arrangement of two sets of cotton yarns. It is done on looms.
v. Sewing or stitching- The cotton fabric is stitched into a shirt.


Various steps involved to obtain wool from fleece are given here.
i) Picking out the burrs
 ii) Dyeing in various colours
iii) Shearing 
iv) Scouring 
v) Sorting
Write the above steps in the correct sequence in which they are carried out.

The correct sequence in which they are carried out:
i) Shearing
ii)Scouring
iii)Sorting
iv) Picking out the burrs
v) Dyeing in various colours 


Explain the phrase - "Unity is Strength" on the basis of the making of fabric from fibre. 

A single fibre is a thin strand. Single fibre is too weak so it can be easily divided or broken. When many fibres together make a single fabric, it is not easy to tear them. The fabric needs some extra energy to tear apart as compared to a single fibre. So, unity is strength.


Fill in the blanks to complete the life story of cotton fibre.
My parents' cotton plants were grown in (i) .......... soil and (ii) ............. -climate. The plants bore fruits called (iii).................. . The cotton fibre was separated from seeds in the cotton bolls by the process of (iv) ........... . Other cotton fibres were made into yarn by the process of (v) ............ .The yarn was (vi)............... to give beautiful colours and then (vii)................... to get cotton fabric.

(i) black
(ii) warm
(iii)cotton bolls
(iv) ginning
(v) spinning
(vi) dyed
(vii) woven


Explain the process of making thread from fiber.

Thread is a type of yarn. The process of making yarn from fibre is called spinning. In this process, cotton fibres are pulled and gently twisted to bring the fibres close to each other, and the yarn is formed.


Write any two significance of cotton fiber.

Two significance of cotton fibers are :
1. They are soft.
2. They absorb moisture.


From which parts of the plant cotton and jute are obtained?

Cotton is obtained from the fruit of the cotton plants. The cottonseed is a fruit which on ripening splits open to release white fibers of cotton.
Jute is obtained from the stem of the jute plant.


How fiber get converted into yarn ?

Yarn is made from fibre by the process of spinning. In this process, cotton is pulled and gently twisted simultaneously. This makes fibers close to each other and yarn is formed.


Activity-1
Pull a single thread from any piece of cloth. What these fibers or threads are made up of?

Select a piece of cotton fabric you labeled in Activity-1. Now, try to find a loose thread or yarn at one of the edges and pull it out. If no loose yarns are visible, you can gently pull one out with a pin or a needle. We find that fabric is made up of yarns arranged together. 


The clothes, bed - sheets, curtains, etc, at our homes, are made up of different clothes. Will you identify some clothes from these?

Yes, some of these clothes, like a -quilt, sweater, etc. are made of wool; while some clothes like- curtain, shirt, handkerchiefs are made of cotton; some clothes like kuna, saree, etc. are made of silk and some clothes like trousers, shirts, etc. are made of synthetic fibres.


Find out which crop is grown for obtaining fiber and uses of this at your nearby place? 

Cotton is the crop that is grown at our nearby place for obtaining fiber. Cotton fiber is used in mattress covers, bed -sheets, clothes, etc. Cotton is used in filling pillows and mattresses. 


List names of clothes used in our daily life and write by which type of fiber they are made.

Clothes and fibers used in them:

$$Clothes$$ $$Fiber\ used$$ 
Kerchief Cotton 
Dhoti Cotton 
Shirt Cotton / Synthetic 
Quilt Cotton 
Sweater Wool 
Socks Nylon / Rayon 
Saree Silk / Cotton 
JacketNylon / Dacron 
TrousersDacron 


Fill in the blanks : 
The process of making thread from fibers is called ..........

The process of making thread from fibers is called spinning. spinning is a process in which an extruded liquid polymer filament is continuously drawn and simultaneously solidified to form a continuous synthetic fiber.


Collect knowledge about Bt cotton from an agricultural scientist or visit enviro.nic.in./divisions/ csnv/btcotton/bgnote./pdf.

Bt cotton is a genetically modified crop. It stands for Bacillus thuringiensis a soil bacterium that contains a toxic gene called the Bt gene. The aim is to make the cotton crop resistant to bollworm. The gene is inserted into the cottonseed through genetic engineering. Now, the toxin is not harmful to the plant but the Bt gene becomes part of it.


What do you understand by weaving ? Explain .

Weaving is the process of arranging two sets of yarns together to make fabric. Weaving of fabric is done on looms.


What is the importance of bandhej process ?

It makes clothes look attractive.


Fill in the blank:
The process of making yarn from fiber is called ............. .

The process of making yarn from fiber is called spinning.


Fill in the blanks :
We get cotton from ............. of cotton plant.

We get cotton from fruits of cotton plant.


In Rajasthan, where do you find the best art of printing?

In Sanganer (Jaipur)


Write the names of two simple devices for spinning.

Answer: takli and charkha 
Spinning is the process of making yarn from cotton fibres. This can be done by simple hand-operated devices like takli and charkha. 


Why is salt added while colouring of clothes is done ?

It is done to enhance the colour on cotton clothes.


Which plant is used to make eco-friendly toys?

The moonj plant is used to make eco-friendly toys. It is also used to make baskets, hand fans, mats, brooms, etc.


Clothes made of different fibers are passed turn by turn by your fist. What do you observe?  

Cotton gets wrinkled but nylon, polyester, and rayon does not get wrinkled. 


Explain the process of making yarn from fibre.

The thin strands are called yarns which are made from fibre. Spinning is the process of making yarn. The process where the cotton fibers are drawn out and are twisted. This process brings all the fibres together to form a yarn.


Name two items that are made from coconut fibre.

Two items made form coconut fibre are ropes and mats.


Explain the colouring of cotton clothes.

For the colouring of cotton clothes, many types of dyes are used. The colour which is to be used for colouring is mixed with the desired colour in cold water first. Now, this colour is poured into hot water and salt is added. It is stirred with a stick. Now clothes are dipped in it till the water cools. After this clothes are squeezed well and dries in shade.


Write the significance of cotton clothes 

Types of cotton clothes are muslin, rubies, vial, poplin, etc. The significance of cotton clothes are : 
1. They are cool.
2. They are easier to dye.
3. They absorb moisture.


Where is printing of clothes done in Rajasthan ?

Sanganer (Jaipur) in Rajasthan is a major center of printing. Other centers of printing is Rajasthan are Jodhpur , Udaipur , Banner , Bhilwara , Pali , Bagru , Aakola (Chhitorgarh) etc.


Classify plant fibres on the basis of origin.

Fibre Producing Plants:
  • Plant fibres are used for the fulfilment of human requirements.
  • From an economic point of view fibre producing plants are important just next to food crops.
  • Out of the three basic requirements of humans, clothes are the second basic requirement.
  • From ancient times, plant fibres were used by men to cover their bodies. In comparison to plant fibres, animal fibres such as wool, silk and fur have limited use.
Types of Fibres:
Plant fibres are obtained from various parts of the plant body. On the basis of their origin and structure, plant fibres are of three types.
  • Surface Fibres: These are produced as outgrowths from plant parts such as the seed or surface of the fruit.
  • Soft, Stem or Bast Fibres: These originate from phloem fibres of the stem of dicotyledonous plants. These are a special type of narrow, elongated and lignified cells. Example: Jute, Hemp and Patan.
  • Hard or Leaf Fibres: These are derived from leaves of monocotyledonous plants such as - Coir.
Classification of Plant Fibres:
  • Economic botanist A.F. Hill (1952) classified plant fibres, into six groups on the basis of their utility.
  • Textile Fibres: These fibres are used to make clothes, ropes, fibre strings (suite), cloth bags (Sack) etc.
  • Brush Fibres: These fibres are used in making brooms, brushes etc. Example: Leaves of a palm tree (Khajur tree).
  • Plaiting and Rough Weaving Fibres: These fibres are used for making baskets, mats, caps, seats of chairs etc. Example: Bamboo.
  • Filling Fibres: Used to fill mattresses, in making blankets and pillows etc. Example: Cotton, Madar, Semal, Coir (Coconut) etc.
  • Natural Fibres: Used directly for covering the body. Example: Broussonetia papyrifera. Its bark is used to prepare tapa cloth.
  • Papermaking fibres: Used to make paper, cardboard etc. Such as Bamboo, Eucalyptus, Certain grasses, Populus alba.


Describe the process of spinning and weaving?

Spinning: 
The process of making yarn from fibres is called spinning. In this process, fibres from a mass of cotton wool are drawn out and twisted. By this, fibres come together to form yarn. Spinning can be done by hand, by takli and charka. On a large scale, spinning is done with the help of machines. 

Weaving: 
The process of arranging two sets of yarn together to make a fabric is called weaving. The process of weaving can be done on looms. The looms are either - hand operated or power operated.


Natural fibers and synthetic fibers are used in the field of textile manufacturing. Compare their merits and demerits.

Merits:
  • Comfortable to wear
  • Not inflammable
  • Ability to absorb water
  • High aeration 

Demerits:
  • Less available
  • Less durability
  • Wrinkle easily
  • Cannot dry easily on getting wet 


Which kind of soil is needed for growing cotton plant?

For growing cotton plants, sandy-loam or loam soil, that drains water easily is suitable. 


Make a flow chart of cotton ball to fabric.


1777478_1847546_ans_fd35535de61a49dab33ac31fefd42f51.png


Match the articles given in column I with the articles of column II
Column I
Column II

(a) Sweater(i) Cotton
(b) Cotton bolls(ii) Wool
(c) Dhoti(iii) Ginning
(d) Gunny bags(iv) Jute

(a) Sweater $$\rightarrow$$ (ii) Wool 
(Sweaters are generally made from wool as it is warm)

(b) Cotton bolls $$\rightarrow$$ (iii) Ginning 
(Cotton fibres from the seeds of cotton bolls are separated by combing. This process is called ginning)

(c) Dhoti $$\rightarrow$$ (i) Cotton 
(Dhotis are generally made from cotton)

(d) Gunny bags $$\rightarrow$$ (iv) Jute 
(Gunny bags are generally made from jute)


Fill in the names of useful items made from jute fibers in Fig. , One such example is given.
1787192_6cc2a4bae17a4bafa9234e5c1a896d27.png

The useful items made from jute fibers are:
1) Handbag
2) Rope
3) Carpet
4) Gunny bag
5) Cap
6) Fabric 
7) String
8) Mattress


Class 6 Chemistry Extra Questions