Q1 )
Classify the following fibres as natural or synthetic:
nylon, wool, cotton, silk, polyester, jute
NCERT Solutions for Class 6 Science Chapter 3 Fibre To Fabric
Answer :
(1) Natural fibers: - Natural fibers are obtained from plants or animals.
Hence, the required answer is wool, cotton, silk, and jute.
(2) Synthetic Fibers: - Synthetic fibers are man-made fibers, most of them are prepared from raw material petroleum called petrochemicals.
Therefore, the required answer is nylon and polyester.
Q2 )
State whether the following statements are true or false:
a) Yarn is made from fibres.
b) Spinning is a process of making fibres.
c) Jute is the outer covering of coconut.
d) The process of removing seed from cotton is called ginning.
e) The weaving of yarn makes a piece of fabric.
f) The silk fibre is obtained from the stem of a plant.
g) Polyester is a natural fibre.
NCERT Solutions for Class 6 Science Chapter 3 Fibre To Fabric
Answer :
a) Yarn is made from fibres. \(\rightarrow \) TRUE
b) Spinning is a process of making fibres.\(\rightarrow \) FALSE
Reason: Spinning is the process of making yarn.
c) Jute is the outer covering of Coconut.\(\rightarrow \) FALSE
Reason : Jute is the outer parts of stem of jute plant.
d) The process of removing seed from cotton is called ginning. \(\rightarrow \) TRUE
e) The weaving of yarn makes a piece of fabric. \(\rightarrow \) TRUE
f) The silk fibre is obtained from the stem of a plant. \(\rightarrow \) FALSE
Reason: The silk fibre is obtained from the silkworm.
g) Polyester is a natural fibre.\(\rightarrow \) FALSE
Reason: Polyester is a synthetic fibre because it is made by human.
Q3 )
Fill in the blanks:
a) Plant fibres are obtained from_________ and ________.
b) Animals fibres are __________ and ___________.
NCERT Solutions for Class 6 Science Chapter 3 Fibre To Fabric
Answer :
a) Plant fibers are obtained from \( cotton \) and \( jute \) .
b) Animals fibers are \( silk \) and \( wool \) .
NCERT Solutions for Class 6 Science Chapter 3 Fibre To Fabric
Answer :
(a) Cotton is obtained from the fruit of the cotton plants. Cottonseed is a fruit which on ripening splits open to release white fibers of cotton.
(b) Jute is obtained from the stem of the jute plant.
NCERT Solutions for Class 6 Science Chapter 3 Fibre To Fabric
Answer :
(1) Yarn can be made from fiber by the process called Spinning.
(2) Spinning was traditionally done in India on a hand spindle (taklu) or on a spinning wheel (charkha).
(3) But now machines are used.
(4) Fibers from a mass of cotton wool are drawn out and twisted. This brings the fibers together to form yarn.