CBSE Class 6 Science 

Chapter 3: Fibre to Fabric 

Additional Questions

1. What is mean by fibres. Explain the different type of fibres with examples
2. What is mean by ginning of cotton?
3. In which states jute plant is cultivated in India?
4. What is mean by spinning?
5. What are two processes by which fabrics is made from yarns? Explain
6. What are steps involved in the preparation of fabric? Explain.
7. Explain how jute is obtained from jute plant
8. The fabric gets unravelled, if we pull a yarn from a torn socks. Why?

Answers

1. Fibres are thin strands of the thread used to make fabric. Fibres are of two types: Natural fibres and Synthetic fibres. The fibres obtain from plants and animals are called natural fibres. Examples Cotton, Jute, Silk and wool. The fibres are not obtained from plants and animals, but made from chemical substances are called synthetic fibres. Examples for synthetic fibres are polyester, nylon and acrylic.
2. The process of separating fibres from the cotton seed by the method of combing is called ginning of cotton.
3. Jute is mainly grown in West Bengal, Bihar and Assam in India.
4. The process of making yarn from fibres is called spinning.
5. Two main processes by which fabric are made from yarns are called weaving and knitting. Weaving is the process of arranging two sets of yarns together to make fabric. The weaving of yarns is done on looms. Looms are either hand operated or power operated.  Knitting is the process of make the fabric using a single yarn. Knitting is done with hands and also with machines.
6. The steps involved in the preparation of fabric are                                                                             a. Collecting the fibres                                                                                                                     b. Preparing yarns from the fibres by the process of spinning                                                         c. Fabrics is made from the yarn by the processes like weaving and knitting
7. Jute fibres are obtained from stem of jute plant. It is normally harvested when it is in the flowering stage. The stem of the harvested plants are immersed in water for few days. The stem rot and then fibres are separated by hand and then converted into yarns to make fabric.
8. The fabric gets unravelled, if we pull a yarn from a torn socks, because socks are made using single yarn by the process of knitting.