Question

The following is an answer given by Bhojhoo to a question asked by his teacher – ‘Cotton, wool, silk and jute are classified as synthetic fibres”.
Can you tell what question the teacher has asked?

Answer 1

Hint: In this question we are talking about fibres. We should understand first what are fibres, fibres are commonly defined as thread-like structures that have long, thin and flexible strands. These fibres are spun into yarn which is used for making different types of fabrics. There are two main sources of fibres: plants and animals.

Complete answer:
Fibres are of different types but they are mainly divided into two parts, Natural fibres and Synthetic fibres or Man-made fibres.
Natural fibres
The fibres that are obtained from natural resources like plants and animals are called natural fibres. These fibres are hair-like material which can be directly obtained from plants and animals. Natural fibres are further divided in three categories, Plant fibres, Animal Fibres, Mineral fibres
Plant fibres: The fibres obtained from natural plants and trees are called plant fibres. Cotton and jute are common examples of plant fibres.
Animal fibres: the fibres obtained from animals are called animal fibres. These are generally the skin coverings of animals. Wool and silk are the common examples of animal fibres.
Mineral fibres: The inorganic material is processed to make fibres, the fibre is resistant to fire and acid and are used in industries. An example of mineral fibre is asbestos.
Synthetic fibres
Synthetic fibres or man-made fibres are made by polymerization of monomers, then the polymer is passed through tiny holes to make fibres. common examples of Synthetic fibres are polyester and nylon.

Note:
Natural fibres have many advantages over synthetic fibres as they are biodegradable, light weighted, show good electrical resistance and skin friendly as they do not cause itching or irritation when touched.