Very confusing question...... In standard 8 science text,it is written that nylon is the first fully synthetic fibre.it is also written that "it was prepared from coal,water and air.all of these are natural........ Then how come nylon is first 'FULLY SYNTHETIC FIBRE.'???
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The coal , water and air is not defined as 'THE NATURAL RAW MATERIAL' so,it's the first fully synthetic fibre the coal , air, and water is just natural material but it's not the raw material
It is fully synthetic fibre because air water coal is not obtained from plants and animals and natural fibres are obtained from plants and animals
Synthetic fibres are also called artificial fibre because it is made by human being natural fibres are not made by humans do it is called natural fibres