Solution of Chapter 3. Fibre to Fabric (NCERT - Science Exemplar Book)

Paheli wants to present her friends a gift made of plant-fiber.

Which out of the following will she select?

Which statements out of the following is incorrect?

Which of the following materials did people use in ancient times for making clothes?

(i) Leaves of trees

(ii) Newspaper

(iii) Metal foils

(iv) Animal skins and furs

Which of the following is not a natural fiber?

Which set of substances is not used for making fibers?

Boojho went to a cloth shop. There he found a fabric which was smooth to touch, had vibrant colour and shine. The fabric could be

Which part of the jute plant is used for getting jute fiber?

Yarn is woven to get fabric using

Beera is a farmer. His field has black soil and the climate is warm. Which fiber yielding plant should he grow in his field?

The correct sequences to get cloth is :

Boojho wants to make yarn from fiber at home. Which of the following will he use to carry out the task?

Yarn, fabric and fiber 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 ……

Some terms related to fabrics are jumbled up and given below. Write them in their correct form.

(a) Onttoc

(b) Spinning

(c) Vingwea

(d) Bisref

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 the 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.

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?

Once, Paheli visited a tailor shop and brought home some cutting of fabric to study their properties. She took two pieces and found that one of the pieces was shrinking when it burnt with a candle. However the other did not shrink on burning. Can you help her to find out which of the two was a cotton fabric and which a silk fabric?

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

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?

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

Match the articles given in Column I with the articles of

Fill in the blanks to complete the life story of cotton fibre.

My parents, cotton plants were grown in ……………. Soil and …………. Climate. The plants bore fruits called ……….. I, the cotton fibre was separated from seeds in threw cotton bolls by the process of ….. . other cotton fibers and myself were made into yarn by the process of …. . The yarn was …….. to give beautiful colours and then …. To get cotton fabric.

Match the terms given in column I with the statement given in column II.

Fill in the names of useful items made from jute fibres in Fig. 3.1. One such example is given.

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

Describe the two main processes of making fabric from yarn.