Fibers - JSS3 Home economics Past Questions and Answers - page 1
State the classes of fiber.
1. The natural fibers; This are gotten from either plant e.g cotton and linen or from animals e.g wool and silk.
2. The man-made fibers; This are gotten from cellulose based fibers e.g viscose rayon and acetate or from non-cellulose based e.g nylon, polyester and acrylics.
Where is wool gotten from?
This is an animal fiber. It is gotten from the hair if fleece sheep. The hair of camel, Angora, Rabbit or angora goat can also be used. It is commonly produced in Britain, Australia etc.
State the manufacturing process for wool.
i. Worsted yarn; this is made from long fibers.
ii. Woolen yarn; this is made from short fibers.
The major steps for the manufacturing of both forms are;
i. Clipping
ii. Sorting
iii. Scouring
iv. Carbonizing
v. Carding
vi. Spinning
vii. Weaving
State the manufacturing process for cotton.
i. Ginning
ii. Baling
iii. Clearing
iv. Carding
v. Combing
vi. Drawing
vii. Spinning
viii. Dyeing
ix. Weaving
What are the two main classes of fibers?
natural and synthetic
animal and plant
long and short
strong and weak
Which of the following is an example of a natural fiber?
polyester
nylon
cotton
acrylic
What is a common property of natural fibers?
highly resistant to wrinkles
biodegradable
prone fibers
static-resistant
Which class of fibers includes wool and silk?
natural fibers
synthetic fibers
protein fibers
cellulosic fibers
What is a characteristic property of wool fibers?
heat resistant
absorbent and moisture-wicking
prone to shrinking
non-allergenic