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प्रश्न
Explain why some fibres are called synthetic.
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उत्तर
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.
संबंधित प्रश्न
Rana wants to buy shirts for summer. Should he buy cotton shirts or shirts made from synthetic material? Advise Rana, giving your reason.
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 |
‘Manufacturing synthetic fibres is actually helping conservation of forests’. Comment.
List the advantages of synthetic fibres.
The world’s most valuable fiber is ______.
Choose the odd one:
Pick the synthetic fibre out of the following.
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?
The first fully synthetic fibre was ______.
