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Standard VI
Chemistry
Silk
Rayon is prep...
Question
Rayon is prepared by the:
A
Chemical treatment of silk fibres
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B
Chemical treatment of wood pulp
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C
Boiling of cocoons of silkworms
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D
Heating of limestone
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Solution
The correct option is
B
Chemical treatment of wood pulp
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Similar questions
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Rayon is prepared by
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Acetate rayon is prepared from
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The reason behind rayon being considered as a synthetic fibre even though it is prepared from wood pulp is:
Q.
How are nylon fibres prepared and woven into fabrics?why is nylon used to make socks,ropes,tents and parachutes?:
K.Long answer questions: (Five marks questions)
1 . What is rayon? Why is it called artificial silk? Name the different varieties of rayon, Why are clothes made of rayon preferred over clothes made of other synthetic fabarics?
2. How are nylon fibres prepared and woven into fabrics? Why is nylon used to make socks. ropes. tents and parachutes?
Q.
X
is a thread of filament from which
Y
is made. If prepared from plants and animals, it is known as
Z
fibres whereas by humans it is known as
W
fibres. Synthetic fibres are nylon, rayon, polyester, acrylic etc.
What is
Y
?
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