lf these are cotton yarns, they burn but do not shrink or melt. The burning yarn gives an odour similar to burning paper.
The silk yarn shrinks away from the flame and burns but does not melt. It has an odour of charred meat. The wool yarn also shrinks and burns but does not melt. It has a strong odour of burning hair.
The synthetic yarn shrinks and burns. It also melts and gives out an odour similar to burning plastics.

The fabrics are made from fibres in the following two steps:
(i) Fibres are first converted into yarn by the process of spinning.
(ii) Fabric is made from yarn by the process of weaving or knitting.

Nylon, wool, cotton, silk, polyester, jute
Natural fibres  Wool, cotton, silk, jute.
Synthetic fibres  Nylon, polyester.

Jute is a rough fibre so, it is not used for making the fabrics (dresses).

Flax arid jute fibres are obtained from the stems of the plants.

No, cotton and jute are obtained from plants.

Cotton is the most important of all plant fibres, used to make clothes.Cotton shirt can be prepared by following steps:
Cotton bolls \(\underset { \xrightarrow{}}{ Ginning } \) Cotton fibre \(\underset { \xrightarrow{}}{ Spinning } \) Cotton yarn \(\underset { \xrightarrow{}}{ Weaving} \) Cotton fabric \(\underset { \xrightarrow{}}{ sewing} \) Cotton shirt
The making of cotton shirt is a long process. From cotton bolls, cotton is usually picked by hand. Fibres are then separated from the seeds by combing. This process is called ginning.
In spinning process, the fibres from a mass of cotton wool are drawn out and twisted. This brings the fibres together to form a yarn.
Weaving is binding of two sets of yarns at right angles to make a fabric. Weaving is done on looms. Now, on sewing this cotton fabric by needle, we get the cotton shirt.