Flashcards
Class 7, Chapter 3 - Fibre to Fabric | NCERT
How many types of fibres one can find on sheep's body?
one
three
four
two
Match sheep breed with its quality.
Lohi
good quality wool
Match sheep breed with its quality.
Rampur bushair
brown fleece
Match sheep breed with its quality.
Nali
carpet wool
Match sheep breed with its quality.
Bakharwal
For woollen shawls
Match sheep breed with its quality.
Marwari
Coarse wool
Match sheep breed with its quality.
Patanwadi
For hosiery
True or false?
Only the fine under-hair provides fiber for making wool
True or false?
There are breeds of sheep that provides only fine under-hair.
True or false?
Mohair is obtained from yaks.
Put in order stages of procesing fibre to wool.
DyeingShearingSortingRollingCleaning of burrsScouring
ShearingScouringSortingCleaning of burrsDyeingRolling
What kind of organism can cause a fatal blood disease in wool industry workers?
It is bacterium called anthrax.
Rearing silkworms for obtaining silk is called:
sericulture
Silk is made of:
protein
sugar
fat
What is the name of a silkworm development stage when it is covered with cocoon?
pupa
What is the most common silk moth?
mooga silk moth
tassar silk moth
eri silk moth
mulberry silk moth
Which country leads in world silk production?
Japan
China
USA
India
Put in order silk moth lifecycle.
larvaepupaeggmoth
How long it takes for mulberry moth from hatching to spin a cocoon?
about 35 to 45 days
about 10 to 15 days
about 25 to 30 days
How silk fibres are separated from cocoons?
with temperature
with mechanic process
with chemical compounds
True or false?
Wool keeps warm better than silk.
True or false?
Silkworm feed on Mulberry leaves.
True or false?
Morus alba is a scientific name for mulberry moth.
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