Extra Questions on Fibre

Question 1.
Classify the following fibres into natural and man-made: cotton, nylon, jute, wool, silk, rayon, polyester.
Answer:

• Natural fibres – Cotton, jute, wool, silk.
• Man-made fibres – Nylon, rayon, polyester.

Question 2.
From where wool is obtained?
Answer:
Wool is obtained from the fleece of sheep or goat.

Question 3.
What is known as golden fibre?
Answer:
Jute is the cheapest natural fibre and is known as the golden fibre.

Question 4.
When we burn wool, why do we get the smell of hair bum?
Answer:
Wool is obtained from the fleece (hair) of sheep, goat, yak, etc. This is the reason why burning of wool gives smell like burning of hair.