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Synthetic Fibres And Plastics

Question
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Give any two differences between the natural and synthetic fibres.

Solution

Natural fibres

Synthetic Fibres

1.Natural fibres absorb a lot of water. So, the clothes made of natural fibres do not dry quickly after washing.

1. Synthetic fibres absorb very little water. So, the clothes made of synthetic fibres dry out quickly after washing.

2. Natural fibres have low strength, so the clothes made of natural fibres do not last for a long time.

3. Example; slik.

2. Synthetic fibres are very strong. So, the clothes made of synthetic fibres last for a long time.

3. Example; nylon.

Some More Questions From Synthetic Fibres and Plastics Chapter

Categorise the materials of the following products into ‘can be recycled’
and ‘cannot be recycled’:
Telephone instruments, plastic toys, cooker handles, carry bags, ball point
pens, plastic bowls, plastic covering on electrical wires, plastic chairs,
electrical switches.

Rana wants to buy shirts for summer. Should he buy cotton shirts or
shirts made from synthetic material? Advise Rana, giving your reason.

Give examples to show that plastics are noncorrosive in nature.

Should the handle and bristles of a tooth brush be made of the same material? Explain your answer.

‘Avoid plastics as far as possible’. Comment on this advice.

Match the following  of column I correctly with the phrases given in column II:

‘Manufacturing synthetic fibres is actually helping conservation of forests’.
Comment.

Describe an activity to show that thermoplastic is a poor conductor of electricity.

What are natural fibres?

Give two examples of natural fibres.

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