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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.
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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 synthesised from raw materials called ______
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 |
Synthetic fibre is also called _______ fibre.
Beans and peas are pulses.
True or False
It is good to wear clothes made of synthetic fibres while cooking.
Choose the odd one:
The most suitable material for the preparation of handles of cooking utensils is ______.
Which of the following groups contain all synthetic substances?
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
