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Explain why some fibres are called synth...

Explain why some fibres are called synthetic.

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There are some fibres that are prepared by man by using chemicals. These are called synthetic fibres. These are made of small units that join together to form long chains. Examples of synthetic fibres are rayon, nylon, polyester, acrylic, etc.
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Answer true or false. Synthetic fibres are made by using petrochemical as raw materials.

NCERT-SYNTHETIC FIBERS AND PLASTIC-QUESTIONS
  1. Explain why some fibres are called synthetic.

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  2. Mark ( ) the correct answer. Rayon is different from synthetic fibre...

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  3. Fill in the blanks with appropriate words. Synthetic fibres are also...

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  4. Fill in the blanks with appropriate words. Synthetic fibres are synt...

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  5. Fill in the blanks with appropriate words. Like synthetic fibres, pl...

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  6. Give examples which indicate that nylon fibres are very strong.

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  7. Explain why plastic containers are favoured for storing food.

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  8. Explain the difference between thermoplastic and thermosetting plastic...

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  9. Explain why the following are made of thermosetting plastics Saucepa...

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  10. Explain why the following are made of thermosetting plastics Electri...

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  11. Categorize the materials of the following products into 'can be recycl...

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  12. Rana wants to buy shirts for summer. Should he buy cotton shirts or sh...

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  13. Give examples to show that plastics are non-corrosive in nature

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  14. Should the handle and bristles of a tooth brush be made of the same ma...

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  15. Avoid plastics as far as possible'. Comment on this advice.

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  16. Match the terms of column A correctly with the phrases given in column...

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  17. Manufacturing synthetic fibres is actually helping conservation of for...

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  18. Describe an activity to show that thermoplastic is a poor conductor of...

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