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प्रश्न
Hair trap a lot of _________, which is a poor _________ of heat.
उत्तर
Hair trap a lot of air, which is a poor conductor of heat.
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संबंधित प्रश्न
Short Answer Type Question:
What are natural fibres? Explain with examples.
Classify the following fibre as natural or synthetic:
nylon
Classify the following fibre as natural or synthetic:
polyester
Yarn is made from fibres.
Spinning is a process of making fibres.
Dacron is an example of artificial fibers.
| 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 |
Selective breeding is a process of
Boojho went to a cloth shop. There he found a fabric which was smooth to touch, had vibrant colour and shine. The fabric could be
The following is an answer given by Boojho to a question asked by his teacher - "Cotton, wool, silk and jute are classified as natural fibres whereas nylon and polyester are classified as synthetic fibres”.
Can you tell what question the teacher has asked?
