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Question
Match items in List A with the items of list B.
| List A | List B |
| (a) nylon | (i) non-stick coating |
| (b) PET | (ii) electric switches |
| (c) rayon | (iii) parachutes |
| (d) thermosetting plastics | (iv) polyester |
| (e) teflon | (v) artificial silk |
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Solution
| List A | List B |
| (a) nylon | (iii) parachutes |
| (b) PET | (iv) polyester |
| (c) rayon | (v) artificial silk |
| (d) thermosetting plastics | (ii) electric switches |
| (e) teflon | (i) non-stick coating |
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Short Answer Type Question:
Explain how jute is obtained from the jute plant.
Classify the following fibre as natural or synthetic:
wool
Classify the following fibre as natural or synthetic:
polyester
Polyester is a natural fibre.
Complete the Analogy:
Hemp: ______:: Wool: ______.
Complete the crossword given below with the help of clues.
Across
- Substance used as synthetic wool. (7)
- A plastic used for making containers and carry bags. (9)
- Substance made up of large number of smaller molecules. (7)
- Another name for this compound is artificial silk. (5)
Down
5. A type of fibre obtained naturally from cocoon. (4)
6. A synthetic fibre classified as polyester. (8)
7. A polymer used for making ropes. (5)
The rearing of silkworms for obtaining silk is called ______.
Hair trap a lot of ______, which is a poor ______ of heat.
Write various steps for processing fibres into wool.
Boojho wants to make yarn from fibre at home. Which of the following will he use to carry out the task?
