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Fibre to Fabric (Class VII)

Learn about wool and silk fibers - their sources, properties, production processes, varieties, and regional breeds in India.

18 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following is not a wool bearing animal?

  1. Yak
  2. Goat
  3. Wolf
  4. Llama
  5. Camel
Question 2 Multiple Choice (Single Answer)

Fabrics made from which of the following natural materials have the greatest ability to retain shape?

  1. Cotton
  2. Flax
  3. Coir
  4. Wool
  5. Jute
Question 3 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. Wool is the soft curly fibre obtained from the fleece of domesticated sheep.
b. Angora rabbits are reared in Punjab and Rajasthan for their wool.
c. The number of crimps per centimeter determines the fineness of the wool fibre.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 4 Multiple Choice (Single Answer)

Which of the following is not a property of wool?

  1. Wool can absorb large amount of water.
  2. It has a low tensile strength and elasticity.
  3. It is a heat insulator.
  4. Wool is light weight and can be easily dyed.
  5. Wool is considerably resilient.
Question 5 Multiple Choice (Single Answer)

Which of the following countries is the largest producer of wool?

  1. Australia
  2. New Zealand
  3. China
  4. Argentina
  5. South Africa
Question 6 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. Raw wool contains an oily substance called yolk.
b. The yolk consists of lanolin that is used in the preparation of cosmetics.
c. In the process of shearing, the fleece is cut away from the skin of the sheep.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 7 Multiple Choice (Single Answer)

Which of the following is not an example of worsted fabric?

  1. Gabardine
  2. Crepe
  3. Flannel
  4. Tweed
  5. Serge
Question 8 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. Merino wool, obtained from merino sheep, is the poorest quality of wool.
b. In silk industry, fibre from the cocoon of mulberry silk moth is used.
c. Spider silk is used for the cross-hairs of a telescope and other optical instruments.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 9 Multiple Choice (Single Answer)

In which of the following countries was silk first discovered and then developed?

  1. India
  2. China
  3. Japan
  4. Australia
  5. France
Question 10 Multiple Choice (Single Answer)

Which of the following is a natural protein fibre?

  1. Cotton
  2. Silk
  3. Jute
  4. Coir
  5. Flax
Question 11 Multiple Choice (Single Answer)

The science of raising silkworms, so as to obtain silk cocoons is called

  1. agriculture
  2. sericulture
  3. pisciculture
  4. apiculture
  5. vermiculture
Question 12 Multiple Choice (Single Answer)

Match the following:

 
a. Scouring 1. It is the process of removing fleece from the sheep.
b. Shearing 2. It is the process of separating wool and hair from the fleece.
c. Sorting 3. It is the process of removing yolk and suint from the raw wool with a soap or a detergent.
  1. a – 2, b – 1, c – 3
  2. a – 1, b – 2, c – 3
  3. a – 3, b – 1, c – 2
  4. a – 3, b – 2, c – 1
  5. a – 1, b – 3, c – 2
Question 13 Multiple Choice (Single Answer)

Match the following:

   
Name 
        </strong>|<strong>State where reared  
        </strong>|<strong>Quality</strong>|

|a. Bakharwal|1. Rajasthan|p. Coarse wool used for making blankets|
|b. Nali|2. Jammu and Kashmir|q. Fine quality used for woollen shawls|
|c. Marwari|3. Gujarat|r. Used for making carpets|

  1. a – 2 – q, b – 1 – r, c – 3 – p
  2. a – 2 – q, b – 1 – p, c – 3 – r
  3. a – 2 – r, b – 1 – q, c – 3 – p
  4. b – 1 – q, b – 3 – r, a – 2 – p
  5. c – 2 – q, b – 1 – r, a – 3 – p
Question 14 Multiple Choice (Single Answer)

Which of the following silk threads is made by twisting two or more raw silk threads in only one direction?

  1. Tram
  2. Crepe
  3. Organzine
  4. Thrown singles
  5. None of these
Question 15 Multiple Choice (Single Answer)

Match the following:

 
a. Fleece 1. It is the dried perspiration of sheep found in the raw wool.
b. Shoddy 2. It is the hair on the skin of sheep, etc. from which wool can be obtained.
c. Suint 3. It is the fabric made from the used wool by carding, spinning and weaving.
  1. a – 1, b – 3, c – 2
  2. a – 3, b – 2, c – 1
  3. a – 1, b – 2, c – 3
  4. a – 2, b – 1, c – 3
  5. a – 2, b – 3, c – 1
Question 16 Multiple Choice (Single Answer)

Which of the following varieties of silk is/are produced only in the Brahmputra valley – mainly Assam and adjoining parts of Burma?

a. Eri silk
b. Tassar silk
c. Muga silk

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 17 Multiple Choice (Single Answer)

Match the following:

 
Type of silk thread Turns/cm
a. Organzine 1. 8 to 12 turns/cm
b. Crepe 2. 4 turns/cm
c. Tram 3. 16 to 32 turns/cm
  1. a – 3, b – 2, c – 1
  2. a – 2, b – 3, c – 1
  3. a – 1, b – 3, c – 2
  4. a – 1, b – 2, c – 3
  5. a – 2, b – 1, c – 3
Question 18 Multiple Choice (Single Answer)

Match the following:

 
Sheep breed 
        </strong>|<strong>State where reared</strong>|

|a. Rampur Bushair|1. Gujarat|
|b. Lohi|2. Punjab|
|c. Patanwadi|3. Uttar Pradesh|

  1. a – 3, b – 1, c – 2
  2. a – 3, b – 2, c – 1
  3. a – 1, b – 3, c – 2
  4. a – 2, b – 3, c – 1
  5. a – 1, b – 2, c – 3
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