Fibre to fabric Worksheet-5

Fibre to fabric Worksheet-5

Multiple-Choice question:

41. When wool is burnt, why do we get the smell of hair burn?

(a)     Because wool is obtained from the fleece of sheep, yak, and is made up of proteins.

(b)     Because wool is obtained from the fleece of sheep, yak, and is made up of cellulose.

(c)     Because wool is obtained from the fleece of sheep, yak, and is made up of chitin.

42. When nylon is burnt, why it smells different from hair burn or paper burn?

(a)     Nylon is a synthetic fibre made from chemicals and not proteins or carbohydrates

(b) Nylon is made up of lipids and not proteins

(c) Nylon is made up of chitin.

43. Name the equipment from the following used by the women in the given figure.

(a) Charkha                                       (b) The spinning wheel

(c) Any of these

44. What are the fruits of cotton plants called?

(a) Cotton balls   (b) Cotton bolls   (c) Cotton rolls

45. The process of growing silkworm on mulberry trees and obtaining silk from them is called:

(a) Horticulture   (b) Sericulture     (c) Vermiculture

46. Jute fibres are obtained from which part?

(a) Stem               (b) Leaves            (c) Root                (d) Flower

47. Shearing means:

(a) Removing wool from sheep

(b) Taking out silk from cocoon

(c) Removing cotton seeds from cotton balls

(d) None of these

48. Wool is warm because:

(a) Its fibres are made up of protein.

(b) It is crinkled and retains air.

(c) Both of these are correct.

(d) None of these

49. The yarn of the fabrics prepared by using natural as well as the synthetic fibres are termed as:

(a) Manufactured fabrics

(b) Blended fabrics

(c) None of these

50. Which one of the following statements is correct?

(a) Cotton is obtained from the balls of the flowers.

(b) Jute fibres are obtained from the stems of the plants.

(c) Both of these are correct

(d) Both of these are incorrect

Answer Key:

41. (A)
42. (A)
43. (C)
44. (B)
45. (B)
46. (A)
47. (A)
48. (B)
49. (B)
50. (C)