4.
5. Most synthetic fibres can ha
. Answer the following questions orally.
1 Name the substances used to obtain synthetic fibres.
hinh fihre is also known as Orlon?
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1
Answer:
Fibres are also made from chemical substances which are not obtained from natural sources. The fibres which are prepared from chemical substances in industry are called synthetic fibres. For example: Nylon, polyester (terylene) and polyacrylic (orlon).
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4
Answer:
Synthetic fibres are made only from polymers found in natural gas and the by-products of petroleum. Synthetic fibres are man-made fibres, most of them are prepared from raw material petroleum called petrochemicals.
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