Ch3. Fibre to fabrics
1. Name the following:
a) The fibre used for making gunny bags. –Jute fibre
b) The process of removal of wool from the sheep’s skin. -Shearing c) A spinning wheel made from wood. –Charkha
2. State whether the following statements are true or false. Correct the false statements.
a) The larva of silkworm feeds on strawberry leaves. False
The larva of silk worm feeds on mulberry leaves
b) The fibre is converted to yarn to make it thick, strong and long. True
c) A special clipper is used to remove hair from animals. True
d) Handlooms are large looms used in industries which are operated by electricity. False
Powerlooms are large looms used in industries which are operated by electricity.
3. Fill in the blanks:
a) Silk is a smooth, shiny, natural fabric obtained from animals.
b) Natural fibres are chemically improved to form synthetic fibres.
c) The invention of the needle helped in sewing pieces of fabrics together.
4. In the following questions, two statements are given- one labelled Assertion (A) and the other labelled Reason (R). Read the statements carefully and choose the correct alternative (A), (B), (C) and (D) as given below.
(A) Both A and R are true and R is correct explanation of the assertion. (B) Both A and R are true but R is not the correct explanation of the assertion.
(C) A is true but R is false.
(D) A is false but R is true.
Assertion: Cotton clothes keep us cool in warm weather.
Reason: Cotton fabric is naturally light and provides ventilation.
a)
ans: (A) Both A and R are true and R is correct explanation of the assertion.
b) Assertion: In India, jute is mainly grown in the states of Assam.
Reason: Jute plant grows well in the regions with low temperatures and less rainfall.
ans:
(C) A is true but R is false.
5. Define the following:
a) Picking of cotton
Ans: The process of collecting cotton from the bolls by hand is known as picking.
b) Retting
Ans: The stems of jute rot emitting a bad odour and the fibres are separated by hand by a process known as retting.
6. Differentiate between:
a) Natural fibres and Synthetic fibres
Ans: Natural fibres Synthetic fibres
7. Give reasons for the following:
a) Synthetic fibres are used to make a variety of fabrics.
Ans: ∙ Synthetic fibres have properties like heat resistance, resistance to most chemicals, low moisture absorbency and flame resistance which make them more useful.
∙ Hence they are used to make a variety of fabrics.
b) Silk is a popular luxury fibre.
Ans: ∙ Silk fabric is smooth and shiny.
∙ It became a popular luxury fibre because of its lustre and texture.
8. Creative type of question.
Texool Textile limited is a cottage industry. It provides job opportunities to villagers. This company believes in recycling its waste. The company provided Sulbha with waste cotton, wool and jute to create new products. Name some items that Sulbha can create from the waste.
Ans:
Cotton Reusable bags, Reusable cotton towels and napkins, Cutlery bags.
Jute Jute bags, Jute rope decorations, Waste baskets.
Wool Wool insulated lunch bag, Kitchen scrubbing pad, Decorations.
(Answers may vary, accept all relevant answers)
I. 9. Complete the given process of wool: (REFER TO TEXTBOOK)
10. Read the following paragraph and answer the following questions: Textile is a fabric that is knitted or woven and made from yarn. Thus, the textile industry is the industry responsible for taking a raw material, like cotton or wool, and spinning it into yarn that is later used to create a fabric. Developing, producing, manufacturing, and distributing textiles are the different processes included in this industry.
a) What do you mean by textile?
Ans: Textile is a fabric that's knitted or woven and made from yarn.
b) Which raw materials mentioned above are spun into yarn? Ans: Raw materials like cotton or wool spun into yarn.
11.Given below are four words. Each word has a name of a fabric hidden in it. Find the hidden fabrics. One example has been done for you.
12.
HOTS
a) Why we can’t weave cotton fibre directly into a fabric?
Ans: ∙ The cotton fibre is short, thin and fragile.
∙ As the fibre is thin and fragile, it cannot be woven directly into a fabric.
b) Why are cocoons boiled in water to obtain silk?
Ans: ∙ Silk thread is obtained from the saliva of silk worms. ∙ The larva of a silk worm feeds on mulberry leaves and secretes fine threads of silk.
∙ This silk is wrapped around the worm in a cocoon.
∙ Hence the cocoons are collected and boiled in water.
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6. Differentiate between:
a) Natural fibres and Synthetic fibres
Ans: Natural fibres Synthetic fibres
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