Question

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Answer 1

Answer:

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Answer 2

activity 1.

Natural fibre from plants - jute

natural fibre from animals - silk

synthetic fibre - nylon

1. What is polymer?

ans. polymer is a very big molecule formed by the combination of a large number of small molecules.

2.How the synthetic fibres are obtained?

ans. synthetic fibers are created by extruding fiber-forming materials through spinnerets into air and water, forming a thread. Before synthetic fibers were developed, artificially manufactured fibers were made from polymers obtained from petrochemicals.

3.what do you observe in identifying fibres in burning test?

ans. Fibers can also be identified through the smell of the smoke it gives off in burning, and the ash or melted bead that remains after it has burned. Some of the fabrics are blends, and the blend of fibers may make the burn test a rather unreliable test for fiber content.

4.name some examples of synthetic fibre?

ans. rayon,nylon, acrylic, etc...

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