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प्रश्न
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
पर्याय
True
False
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उत्तर
This statement is False.
Explanation:
Synthetic fibres melt on heating.
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संबंधित प्रश्न
Mark (✓) the correct answer:
Rayon is different from synthetic fibres because
Fill in the blanks with appropriate words.
Synthetic fibres are also called ______ or _______ fibres.
Give examples which indicate that nylon fibres are very strong.
Match the terms of column A correctly with the phrases given in column B.
| A | B | ||
| 1 | Polyester | a | Prepared by using wood pulp |
| 2 | Teflon | b | Used for making parachutes and stockings |
| 3 | Rayon | c | Used to make non-stick cookware |
| 4 | Nylon | d | Fabrics do not wrinkle easily |
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.
Choose the odd one:
The material similar to silk in appearance is ______.
The most suitable material for the preparation of handles of cooking utensils 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?
Write the importance of synthetic polymers in our life.
