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Questions
List the advantages of synthetic fibres.
State two advantages of synthetic fibres.
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Solution
- They do not wrinkle easily and they keep their colour and brightness for a much longer time than natural fibres such as cotton.
- Using synthetic fibres such as nylon, they are stronger than many natural fibres such as silk or wool.
- These fibres are strong and elastic, which gives them the properties to bounce.
Notes
Students should refer to the answer according to the question.
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Rayon is different from synthetic fibres because
‘Manufacturing synthetic fibres is actually helping conservation of forests’. Comment.
Beans and peas are pulses.
Crossword
Across
1. Fibre that is used as synthetic wool.
2. A plastic used for making water bottles.
3. A long chain made of small repeatingmonomers.
4. Another name for this semi-synthetic fibre is artificial silk.
Down
5. A type of fibre that is naturally obtained from a cocoon.
6. A synthetic fibre classified as polyester.
7. A polymer used for making rope.
The artificial fibers are also known as ______.
Complete the Analogy:
______: Films:: Nylon: Fishing nets.
The material similar to silk in appearance is ______.
A synthetic fiber which looks like silk is obtained by chemical treatment of wood pulp. It is, therefore, known as artificial silk. What is its common name?
Unscramble the jumbled word given below, related to synthetic material.
Anory
Indicate whether the following statement is True or False. Also write the false statement in their correct form.
Synthetic fibres do not melt on heating
