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Sukanya extracted some fibres that had p...

Sukanya extracted some fibres that had properties as mentioned below and burned them. Her observations on burning the fibres are also listed.

Complete the table given below with the name of each fibre Sukanya used and the kind of ash that would have been left behind after each had burned.

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Fabric 1: Rayon, Light feathery ash
Fabric 2: Wool, Black crushable bead
Fabric 3: Acrylic, hard bead that cannot be crushed.
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PEARSON IIT JEE FOUNDATION-SYNTHETIC FIBRES AND PLASTICS -CLASSROOM CORNER (Short Answer Type Questions)
  1. How do you think the production of synthetic fibres using raw material...

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  2. The origin of a certain synthetic fibre is linked to World War II. Dis...

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  3. Sukanya extracted some fibres that had properties as mentioned below a...

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  4. What are natural materials? Give any two examples of objects made from...

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  5. Name any three natural fibres. What are the different sources from whi...

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  6. Explain why is rayon considered a semi-synthetic fibre.

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  7. How can you identify a natural and synthetic fibre? Justify your answe...

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  8. Discuss why polyester is considered a cancer causing fibre? Comment.

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  9. What is the most common synthetic fibres?

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  10. Why does synthetic fibres melt but natural fibres do burn? Discuss you...

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  11. Explain how is nylon made. Comment

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  12. Discuss the different characteristics and uses of nylon?

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  13. Discuss why acrylic is considered non-safe to wear? Comment

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  14. Justify how is polyester used in everyday life? Comment

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  15. Explain what is polyethylene terephthalate used for.

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  16. Is acrylic considered a natural fibre? Justify your answer.

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  17. Give some uses of PET. Discuss in brief.

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  18. Manufacturing synthetic fibres is actually a helping conservation of f...

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  19. Why is acrylic blended with wool? Justify your answer.

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  20. Explain why the following are made of ther mosetting plastics. I. ...

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