Fibre to Fabric Question Answers: NCERT Class 6 Science

Natural fibres: Wool, Cotton, Silk, Jute.

  Wool: We obtain wool from sheep and other animals. A fibre that is obtained from the animals are called natural fibres.                                                              Cotton: We obtain cotton from the cotton plants. Cotton is a soft fibre that grows in a ball. As we obtain it from the plants; is a natural fibre.                        Silk: We obtain silk from the silkworm. The best silk is obtained from the cocoon. So we can say that it is a natural fibre.                                                    Jute: Jute is obtained from the stem of the jute plant. That is why it is also a natural fibre.

Synthetic fibres: Nylon, Polyester

Nylon: It is man- made fibre. It is a thermoplastic silky material generally used for making rope and thread.                                                                    Polyester: It is the derived form of coal, petroleum and water that’s why it is called synthetic fibre.   

(a) True

This statement is true because as we know that the process of making yarn from the fibre is called spinning.

(b) False

Because, spinning is the process of making yarn from fibre.

(c) False

This statement is false because the outer covering of coconut is called coir.

(d) True

This statement is true because the re-cleaning or removing of seeds from the cotton balls is known as ginning.

(e) True

This statement is true because weaving is the process of arranging the two sets of yarn together to make a fabric.

(f) False

It is false because silk fibre is obtained from the cocoon.

(g) False

Polyester is derived from the coal and petroleum. It is a synthetic fibre.

(a) Cotton, Jute

Because cotton is obtained from the cotton plants and Jute is obtained from the stem of the jute plant.

(b) Wool, Silk

Because wool is obtained from the outer covering of sheep and many other animals. And, silk is obtained from the silkworm.

Cotton is obtained from the fruit of the cotton plant. Cotton plant as grows up, cotton balls starts to appear as the covering. As they grow up, cotton balls are collected from the plants. The process of removing of seeds from the cotton balls is known as ginning.

Jute is obtained from the stem of the jute plant. At the flowering stage, the stems of the harvested plant immersed in the water till they rot. Then finally the fibre from the stem is collected by hand.

Ropes, mats, bags, brushes are the items that are made from coconut fibre (eventually from the coconut). The husk or outer covering of coconut is known as coconut fibre which is also known as natural fibre.

The process of making yarn from fibre:

The process of making yarn from fibre is known as spinning. In this process, from a mass of cotton wool, fibres are drawn out and twisted. Then the fibres are arranged in two sets to make yarn. This whole process is called spinning. This process can be done by hands or as well as by machines.