7th Grade > Chemistry
FIBRE TO FABRIC MCQs
Total Questions : 116
| Page 12 of 12 pages
Answer: Option D. ->
Alpaca, llama and camel
:
D
Wool is an animal fibre obtained from the hair of animals such as llama, sheep, alpaca, yak and camel.
Silk fibre is obtained from caterpillars and cat is not a source of wool.
:
D
Wool is an animal fibre obtained from the hair of animals such as llama, sheep, alpaca, yak and camel.
Silk fibre is obtained from caterpillars and cat is not a source of wool.
Answer: Option C. ->
Bacteria
:
C
:
C
Wool industry is an important means of livelihood for many people in our country. But sorter's job is risky as sometimes they get infected by a bacterium, anthrax, which causes a fatal blood disease called sorter's disease.
Answer: Option B. ->
rearing
:
B
Storing and maintaining the eggs laid by female silk moth is called rearing.
The process of taking out silk threads from the cocoon is called reeling.
Scouring is the process of washing and drying of fleece to remove grease, dust and dirt.
:
B
Storing and maintaining the eggs laid by female silk moth is called rearing.
The process of taking out silk threads from the cocoon is called reeling.
Scouring is the process of washing and drying of fleece to remove grease, dust and dirt.
Answer: Option A. ->
larvae
:
A
:
A
The silkworm is the larva or caterpillar of the domestic silkmoth.
Answer: Option B. ->
Dyeing
:
B
Combing is the process of preparing fibres for spinning. The fibres are dyed in various colours before combing them, as the natural fleece of sheep and goats are black, brown or white in colour.
:
B
Combing is the process of preparing fibres for spinning. The fibres are dyed in various colours before combing them, as the natural fleece of sheep and goats are black, brown or white in colour.
Answer: Option A. ->
Pupa
:
A
:
A
In the pupa stage, the caterpillar weaves a net to hold itself. The caterpillar covers itself completely with silk fibre and turns into a pupa, this covering is known as the cocoon. The moth continues to develop within the cocoon. The silk thread or yarn is obtained from the silk moth’s cocoon.
Latest Videos
Latest Test Papers
Login With Google
Old way of Login
Login With Email