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Question
Hair trap a lot of ______, which is a poor ______ of heat.
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Solution
Hair trap a lot of air, which is a poor conductor of heat.
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RELATED QUESTIONS
Short Answer Type Question:
What are synthetic fibres?
Spinning is a process of making fibres.
Terrycot is made by mixing two types of fibres. Write the names of the fibres.
A polymer is a chain of many small units joined together which are called ______.
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 |
The rearing of silkworms for obtaining silk is called ______.
Selective breeding is a process of ______.
Artificial fibres are stronger than natural fibres.
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?
Complete the given analogy.
Coir fibre : ________ :: Cotton fibre : Cotton Plant
