These TS 6th Class Science Important Questions 8th Lesson Fibre to Fabric will help the students to improve their time and approach.
TS 6th Class Science Important Questions 8th Lesson Fibre to Fabric
Question 1.
Name two fibres obtained from plants.
Answer:
Cotton, jute, hemp, flax etc.
Question 2.
Name two fabrics obtained from animals.
Answer:
Silk and wool
Question 3.
Name two fabrics obtained from chemical substances.
Answer:
Terylene, nylon
Question 4.
What is the process of spinning of jute fibres as threads and ropes called?
Answer:
Retting.
Question 5.
When silk is burnt, what is the smell given out?
Answer:
Smell of burning feathers.
Question 6.
How is coconut fibre obtained?
Answer:
From outer layer of coconut fruit
Question 7.
How is wool obtained?
Answer:
From the fur of the sheep.
Question 8.
Which type of fabric is used in book binding?
Answer:
Calico. (Calico is a rough and heavy cotton cloth)
Question 9.
What are fibres?
Answer:
The thinner strands of a thread.
Question 10.
What is the source of cotton?
Answer:
Cotton boils.
Question 11.
How is weaving done?
Answer:
On looms
Question 12.
There is a difference in the prices of fabrics. Why?
Answer:
The price of a fabric depends on various factors, like:
- The nature of fabric – Whether synthetic or natural
- Texture
- durability
- smoothness
- Thickness
- colour
- shrinking property
- availability of the fabric
- demand in the market, etc.
Question 13.
What types of clothes we wear in these seasons?
i. Summer?
Answer: Cotton clothes
ii. Winter?
Answer: Woollen clothes
iii. Rainy?
Answer: Synthetic clothes
Question 14.
On which factors does the selection of a fabric by a person, depend?
Answer:
Personal choice, personality of the owner and his/her ability to pay are all the factors in the selection of a right fabric.
Question 15.
How are the gunny bags made up of ? What are their uses?
Answer:
- Gunny bags are made up of coarse (rough) jute fabric.
- They are used to pack commercial crops like paddy, chilli grams, tamarind, etc.
- Fine quality of jute is also used in making jute fabrics.
Question 16.
Do you know how jute yarn is made ? Is this process same as that for cotton or is there any difference?
Answer:
1. The making of jute yarn differs from that of the cotton yarn.
2. Making of jute yarn:
- The jute plant is normally harvested when it is at flowering stage.
- The stems of the harvested plants are cut and immersed in water for some days.
- When the stem is soaked in water it become rotten and easy to peel.
- Then the fibres are separated from the stems to make jute yarn.
Question 17.
How a jute fabric differs from a cotton fabric?
Answer:
Jute fabric is harder, stronger and more rough than the cotton fabric.
Question 18.
Name a few plants, from which fibre is obtained from their stems.
Answer:
- Hemp : Used to make ropes and cloth.
- Flax: Used to prepare ropes and papers of good quality.
Question 19.
Name a few places in our state, famous for handloom industry.
Answer:
In our state, Gadwal, Venkatagiri, Siricilla, Narayanpet, Dharmavaram, Pochampalli, Mangalagiri, Kothakota are famous for handloom industry.
Question 20.
Write the differences between natural fibres and artificial fibres?
Answer:
| Natural fibre | Artificial fibre |
| 1. The fibres that are derived from plants/animals are from plants/animals are called natural fibres | 1. Fibres made of chemicals are called artificial (or) synthetic fibres. Eg: Polyester, terylene, nylon, acrylic etc. |
| Eg: Cotton, jute are obtained from plants, silk and wool are obtained from animals | Eg: Polyester, terylene, nylon, acrylic etc. |
| 2. When we burn natural fibres it gives ash. | 2. When we burn artificial fibres it gives a pungent smell. |
Question 21.
Read the following fibres and classify them as it is given in tabular form
Wool, Nylon, Terylene, Cotton, Silk, Acrylic, Polyester, Gunny bag.
| Natural fibre | Artificial fibre |
Answer:
| Natural fibre | Artificial fibre |
| Wool | Nylon |
| Gunny bag | Terylene |
| Silk | Acrylic |
| Cotton | Polyester |
Question 22.
What questions would you ask your teacher about natural fibres?
Answer:
- Why do we depend on only cotton, sheep and silkworm for natural fibres?
- Can’t we make fibres completely similar to that of natural fibres?
- What are the uses of natural fibres?
- Are natural fibres similar to artificial fibres?
Question 23.
Write the information collected by you about classification of fabrics that are used by your choice. Write names of the things that are made up of each fabric.
| Type of fabric | Things |
i. Which kind of fabric is being used more in your house ?
ii. How do you identify the type of fabric ?
Answer:
| Type of fabric | Things |
| Cotton | Shirts, Sarees, Towels, Blankets |
| Silk | Kurta, Sari, Frocks, Skirts, Lehangas |
| Wool | Sweaters, Mufflers, Monkey caps |
| Polyester | Shirts, Skirts, Dress material |
| Linen | Shirts, Trousers etc. |
i. Cotton and Polyester fabrics are widely used in the house.
ii. Fabrics are identified by the following ways
- By touching
- By observing duration of dryness after washing
- Wight of the cloth
- Sense of heat after wearing the cloth
- Shining given by the cloth.
Question 24.
How did you identify the type of fabric?
Answer:
- Polyester / wrinkled / fabrics are generally smooth, soft and light in weight. They get wrinkled after washing.
- Cotton fabrics are some what thicker than polyester fabrics. But they get wrinkled after washing. Coarse cotton clothes are heavier than smooth cotton fabrics.
- Silk fabrics are slippery and shiny in nature.
- Woollen fabrics are rough to touch and are somewhat heavier than silk fabrics.
Question 25.
You are provided with pieces of cotton, wool, silk and nylon.
Answer:
| S.No. | Character | Natural fabric | Artificial fabric |
| 1. | Water absorbing nature | yes | no |
| 2. | Time taken to dry | long | short |
| 3. | Smell while burning | no | yes (pungent) |
| 4. | Result after burning | ash | melts |
| 5. | Stretching capacity of yarn | less | high |
| 6. | Smoothness | rough | smooth |
Answer the following questions.
i. Give examples for natural fibres and artificial fibres.
Answer:
Natural fibres : cotton (plant origin)
Aritificial fibres: Nylon
ii. Which types of fabrics are smooth in nature?
Answer: Silk is slippery to touch. Nylon is smooth and soft to touch. Cotton and wool are rough to touch.
iii. Which type of fabrics dry in a short time?
Answer: Artificial fabrics
iv. Do you find any relation between smoothness and time to dry?
Answer: The two factors are inversely related. With the increase in smoothness, the time taken for it to dry, decreases.
v. Which fabrics give ash when they are burn?
Answer: The natural fabrics leave ash when burn.
Question 26.
Draw the diagram showing making mat. Write the process.
Answer:
Coconut leaves are collected. They are cut and the middle veins of the leaves are removed. So that two halves of leaves are separated. These strips are put parallel to each other. Remaining strips are inserted horizontally and alternately between the vertical strips. Finally you will get a sheet like structure. This is the way a mat is prepared.
