Fibre to Fabric

Q34. How is wool obtained?

Ans. Wool is the fibre obtained from the fleece of sheep, goat, rabbit, yak and camels. Hair of these animals is sheared to get wool fibres.

Q35. Why jute fibres are not used for making cloth?

Ans. Jute fibres are not used for making cloth because they are coarse and rough. Thus are not suitable for our body.

Q36. Why synthetic fibres are more durable than natural fibres?

Ans. Synthetic fibres are more durable than natural fibres because they are made up of chemicals.

Q37. One day Dia saw sweeper burning two heaps of garbage: one of waste paper and another of old discarded linen clothes. She observed that both heaps produced similar odor on burning and turned into greyish ash. Why?

Ans. This happened because both paper and linen are natural plant fibers. They are made up of cellulose.

Q38. Can we use synthetic fibre for making kitchen towel?

Ans. No, we cannot use synthetic fibre for making kitchen towel because synthetic fibres melt on heating.

Q39. How did people cover their bodies before clothes were invented?

Ans. People use to cover their bodies before clothes were invented by using fur, leather, leaves and grasses.

Q40. Why cotton clothes are normally preferred in India?

Ans. The climate of India is hot and humid. Cotton clothes absorb sweat easily. Hence, people in India prefer to wear cotton clothes.

Q41. Why synthetic clothes are normally not preferred in hot and humid climate?

Ans. Synthetic fibers such as nylon and polyester do not absorb sweat. Hence, synthetic clothes are normally not preferred in hot and humid climate.

Q42. Why don’t we prefer to wear nylon clothes on hot summer day?

Ans. We sweat a lot in summer. Nylon cloths absorb less water and are not good for our skin. That is why we do not prefer nylon cloth on hot summer day.

Q43. How yarn is made from fibre? Explain.

Ans. The process of making yarn from fibre is called spinning. The fibres are first drawn out from cotton bolls and then twisted into yarn. Takli and charkha are used in spinning.

Q44. Why we wear different type of cloths in different seasons?

Ans. We wear different types of cloths in different seasons in order to adjust with the changing atmospheric conditions due to change in seasons. For example we wear cotton clothes in summer as they absorb sweat and woolen in winter season as they do not allows heat to escape to the cold surrounding.