RBSE Class 6 Science Important Questions Chapter 3 Fibre to Fabric

Rajasthan Board  RBSE Class 6 Science Important Questions Chapter 3 Fibre to Fabric Important Questions and Answers.

RBSE Class 6 Science Chapter 3 Important Questions Fibre to Fabric

Multiple Choice Questions

Question 1. 
Which of the following is obtained from artificial sources?
(a) Wool 
(b) Nylon
(c) Silk 
(d) Cotton
Answer:
(b) Nylon

 

Question 2. 
Which of the following is obtained from animals?
(a) Jute and cotton
(b) Nylon and polyester
(c) Plastic and polymer
(d) Silk and wool
Answer:
(d) Silk and wool

Question 3. 
Which of the following animals give wool?
(a) Sheep and yak
(b) Cow and dog
(c) Elephant and tiger
(d) Snake and duck
Answer:
(a) Sheep and yak

Question 4. 
Which is the right time to cut jute plants?
(a) At flowering stage
(b) At maturity stage
(c) Before flowering stage
(d) Any time after flowering
Answer:
(a) At flowering stage

Question 5. 
Which Indian leader encouraged the use of charkha for spinning?
(a) Mahatma Gandhi
(b) Subhash Chandra Bose
(c) Chandra Shekhar Azad
(d) Bhagat Singh
Answer:
(a) Mahatma Gandhi

Fill in the Blanks

Question 1.    
.................. is done on looms.
Answer:
Weaving

Question 2.    
.................. is obtained from husk of coconut tree.
Answer:
Coir

Question 3. 
Silk and wool are .................. fibres.
Answer:
natural

Question 4. 
The silk fibre is drawn from ..................
Answer:
silkworm

Question 5. 
Cotton plants are grown in places having .................. soil.
Answer:
black

Question 6. 
Jute plant is cultivated during .................. season.
Answer: 
rainy.

State whether True or False

Question 1. 
Cotton is a natural fibre obtained from animals.
Answer:
False

Question 2. 
Yam is a loose thread.
Answer: 
True

Question 3. 
Cotton plants are grown at warm places.
Answer: 
True

Question 4. 
Polyester is a synthetic fibre.
Answer: 
True

Question 5. 
Coir is a fibre obtained from coconut.
Answer: 
True

Match the followings

Column I	Column II
1. Knitting	(a) husk of coconut
2. Silk	(b) at flowering stage
3. Spinning	(c) are used for weaving
4. Coir	(d) is obtained from silkworm
5. Looms	(e) a single yam is used to make a piece of fabric
6. Ginning	(f) fruit of a cotton plant
7. Acrylic	(g) is a thin strand
8. Cotton bolls	(h) separating cotton fibre from seeds
9. Jute is harvested	(i) synthetic fibre
10. Fibre	(j) making yam from fibre

Answer:

Column I	Column II
1. Knitting	(e) a single yam is used to make a piece of fabric
2. Silk	(d) is obtained from silkworm
3. Spinning	(j) making yam from fibre
4. Coir	(a) husk of coconut
5. Looms	(c) are used for weaving
6. Ginning	(h) separating cotton fibre from seeds
7. Acrylic	(i) synthetic fibre
8. Cotton bolls	(f) fruit of a cotton plant
9. Jute is harvested	(b) at flowering stage
10. Fibre	(g) is a thin strand

Very Short Answer Type Questions 

Question 1. 
What do you use for making wicks?
Answer: 
We use cotton to make wicks.

Question 2. 
Why do we need to wear clothes? 
Answer: 
Clothes protect us from heat, cold and rain so we need to wear clothes.

Question 3. 
What are fabrics made of?
Answer: 
Fabrics are made of yarn that are arranged together to form a continuous piece of fabric. 

Question 4. 
Define yarn. What are the yarns made up of?
Answer: 
Yarn is a grouping of fibres twisted together to form fabric. It is made of fibres.

Question 5. 
What is the difference between wool and cotton fibre?
Answer: 
Wool is obtained from animals whereas cotton is obtained from plants.

Question 6. 
Define natural fibres.
Answer: 
Natural fibres are the fibres obtained from plants and animals.

Question 7. 
Name some synthetic fibres.
Answer: 
Rayon, polyester, nylon, acrylic, etc. 

Question 8. 
Where does cotton wool come from?
Answer:
Cotton wool comes from the fruits of cotton plant known as cotton bolls.

Question 9. 
Write the suitable conditions to grow cotton plants?
Answer: 
Cotton plants are grown in black soil in warm climate.

Question 10. 
How does a cotton field look like?
Answer: 
Cotton field looks like a field covered with snow.

Question 11. 
What do you mean by the term jute?
Answer: 
Jute is a rough fibre obtained from the stem of jute plant.

Question 12. 
Name some items made from jute.
Answer: 
Ropes, jute sack bags, gunny bags, carpets, etc.

Question 13. 
When is the jute fibre cultivated? 
Answer: 
It is cultivated during, the rainy season.

Question 14. 
Name some states where the jute plant is cultivated or grown?
Answer: 
It is cultivated in West Bengal, Bihar and Assam.

Question 15. 
What is done in knitting?
Answer: 
In knitting, a single yam is used to make a piece of fabric.

Question 16. 
Name some modern fabrics formed through the unstitched piece of fabric.
Answer: 
Saree, dhoti, lungi and turban are some modem fabrics that are wore unstitched.

Question 17. 
Where was cotton cultivated in early times in India?
Answer: 
It is cultivated in the regions near the river Ganga.

Question 18. 
Define weaving.
Answer: 
Weaving is a process of arranging two sets of yarns together to make a single fabric.

Short Answer Type Questions 

Question 1. 
Why natural fibres are better than synthetic fibres?
Answer: 
Natural fibres are better than synthetic fibres because natural fibres absorb sweat and give a kind of cooling effect whereas synthetic fibres do not absorb sweat and are not comfortable to wear in summer season.

Question 2. 
What is a fibre?
Answer: 
Fibre is a thin strand of thread which can be spun to make fabric. It can be obtained naturally from plants and animals and artificially from chemicals.

Question 3. 
Name some fibres obtained from plants and animals.
Answer: 

1. Fibres that are obtained from plants are cotton, linen and jute.
2. Fibres that are obtained from animals are silk, wool, alpaca and mohair.

Question 4. 
Why there is a need of synthetic fibres over natural fibres?
Answer: 
Natural fibres are very costly as compared to synthetic fibres and need lots of care whereas synthetic fibres are cheap. They do not need much care, they are durable and available in variety of colours. 

Question 5. 
Explain the process of obtaining jute fibre from jute plant.
Answer: 

1. The jute fibre is obtained from the stem of jute plant.
2. It is harvested at flowering stage. The harvested stem is soaked in water until they start rotting.
3. The jute fibre is separated from rot stems by hand.
4. Thus, these fibres are converted into yams that are used to make fabric.

Question 6. 
Explain the method/process used to convert fibre into yarn.
Answer: 
The process of converting fibre into yam is called spinning. In this process, fibres are drawn out and twisted together to form yam. Spinning can be done using hand spindle, charkha or with the help of spinning machines.

Question 7. 
What was popularized by Mahatma Gandhi as a part of independence movements?
Answer: 
Spinning with the help of charkha was popularized by Mahatma Gandhi. He urged people to wear clothes made up of homespun yarn and boycott imported clothes made in Britain.

Question 8. 
Give the steps involved in the preparation of fabrics.
Answer: 
The following steps are used to prepare fabrics:

1. Fibres are obtained from plants or animals.
2. The groups of fibres are twisted together to form yarn by the process of spinning.
3. The sets of yarns are arranged together to form fabric by the process of weaving.
4. Weaving of fabric is done on looms. This is how fabrics are made.

Question 9. 
What happened to people when they began to settle in agricultural communities?
Answer: 
When people began to settle in agriculture communities, they learnt to weave twigs and grass into mats and baskets. Vines, animals fleece, hairs were twisted together to form long strands. These strands are woven into fabrics for their daily use. 

Long Answer Type Questions

Question 10.
Name and explain the process involved in making cotton fabric from cotton bolls.
Answer: 

1. The cotton plant has fruits called cotton bolls. These bolls are full of seeds and cotton fibre.
2. When cotton bolls are riped they open to expose cotton. The collection of cotton from cotton bolls is done by hand picking.
3. Cotton fibres are then separated from seeds by combing. This process is known as ginning. After ginning, the cotton is collected as fibre.
4. The cotton fibres are converted into yarn with the process known as spinning.
5. The yarn is now converted into fabric by the process of weaving and knitting.