Chapter 3: Fibre to Fabric (Solutions)
Posted on : 04-09-2018 Posted by : Admin

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EXERCISES

1. Classify the following fibres as natural or synthetic.

Answer: Fibres which are obtained from natural sources like plants and animals are called as natural fibres. Cotton and Jute are obtained from plant sources whereas wool and silk are obtained from animal sources.

Fibres which are made by humans through chemical processes are called as artificial fibres. Nylon, polyester

2. State whether the following statements are True or False.

1. Yarn is made from fibres. (√)
2. Spinning is a process of making fibres. (×)
3. Jute is the outer covering of coconut. (×)
4. The process of removing seed from cotton is called ginning. (√)
5. Weaving of yarn makes a piece of fabric. (√)
6. Silk fibre is obtained from the stem of a plant. (×)
7. Polyester is a natural fibre. (×)

3. Fill in the blanks:

1. Plant fibres are obtained from Jute and Cotton.
2. Animals fibres are Silk and wool.

4. From which part of the plant cotton and jute are obtained?

Answer: Jute is obtained from stem of jute plant and cotton is obtained from fruit of the cotton plant called as cotton bolls.

5. Name two items that are made from coconut fibre

Answer: Ropes, mats, bags etc. are all made from coconut fibre 

6. Explain the process of making yarn from fibre.

Answer: The process of making yarn from fibre is called as spinning. After obtaining the fibres from their sources, it is twisted to form yarn. Generally two devices are used to make yarn from fibre namely takli and charkha. Spinning of yarn on a large scale is done with the help of spinning machines. After spinning, yarns are used for making fabrics. 

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