Chapter 3: Fibre to Fabric

Q12Written answer

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 …………..

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Ans: Fabric of cotton saree is made by weaving cotton into yarn which in turn is made by spinning thin cotton fibers.

Spinning: It is the process which involves the conversion of fiber into yarn.

Weaving: It is the process which involves the arrangement of two sets of yarn into fabric.

or

Knitting: It is the process which involves the manipulation of yarn to create a textile for using many types of garment.

Q13Written answer

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

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Ans: Cotton

It is the natural, soft fiber that grows with the seeds of the cotton plant. After the cotton fiber is gathered from the plant, it can be spun into cotton thread. The cotton thread can then be made into cloth.

Ans: Spinning

It is the process which involves the conversion of fiber into yarn

Ans: Weaving

It is the process which involves the arrangement of two sets of yarn into fabric.

Ans: Fibers

Fiber is long and thin, like hair.

Q14Written answer

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 yarn together.

(d) Cotton yarn on burning gives an odour similar to that of a burning paper.

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Worked solution

Ans: This statement is false.

Silk is the animal fiber that is obtained from silkworm Bombyx mori. It is soft, shiny & vibrant in colour.

Ans: This statement is false.

Jute is the plant fiber that is obtained from the stem of jute plant Corchorus capsularis.

Ans: This statement is true.

This is because both are plant products.

Q15Written answer

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?

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Worked solution

Ans: The question that was asked by the teacher was-:

To classify the following fibers into natural & synthetic ones-: Cotton, wool, silk jute, nylon, and polyester.

Q16Written answer

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 a cotton fabric was and which silk fabric?

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Worked solution

Ans: The silk fiber is made up of proteins, so that silk fiber shrunk while cotton fiber did not.

Q17Written answer

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

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Worked solution

Ans: The other method to prepare the fabric from yarn is Knitting (the process which involves the manipulation of yarn to create a textile for using many types of garment).

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