State whether the following statements are true or false. If false, correct them.
Cotton yarn on burning gives an odour similar to that of a burning paper.
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 $.........$.
Answer
Fabric of cotton saree is made by weaving cotton yarn which in turn is made by spinning thin cotton fibres.
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?
Answer
Saree, dhoti, lungi, turban, dupatta, towel, etc are the examples of such clothes.
Why are jute plants cut at flowering stage and not on complete maturation?
Answer
Jute plants are cut at the time of flowering stage because a good quality of fibre is obtained at this stage. On complete maturation of plant, fibres of its stem become very hard.
Why are cotton and woollen clothes rough and silk, rayon, nylon, polyester smooth to touch?
Answer
Roughness of cotton and woollen fibre is due to presence of many folds and uneven surfaces in it. Silk, rayon, nylon and polyester are smooth because they have long plain, fine structure.
Fabric means a woven material, a textile or other material resembling woven cloth. Fabric is made up of yarns. Fabrics are made by the two main processes known as weaving and knitting.