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प्रश्न
Hair trap a lot of ______, which is a poor ______ of heat.
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उत्तर
Hair trap a lot of air, which is a poor conductor of heat.
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संबंधित प्रश्न
Very Short Answer Type Questions:
Name two synthetic fibres.
Short Answer Type Question:
What are synthetic fibres?
Classify the following fibre as natural or synthetic:
cotton
Spinning is a process of making fibres.
When you place a natural fibre in a flame it ______.
A polymer is a chain of many small units joined together which are called ______.
The rearing of silkworms for obtaining silk is called ______.
Boojho wants to make yarn from fibre at home. Which of the following will he use to carry out the task?
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?
Describe the two main processes of making fabric from yarn.
