Synthetic fibers and Plastics -10 Multiple Choice Questions

Published on March 6, 2012

synthetic_fibresSynthetic fibers and plastics are alternatives to cotton which is a natural fibers obtained from the cotton plant. These kind of fibers are  man-made fibers that come from chemical resources. Synthetic fibers are continuous filament fibers so that means that the fibers come in long lengths and so it doesn’t have to be spun out into yarn.Synthetic fibers are manufactured using plant materials and minerals: viscose comes from pine trees or petrochemicals, while acrylic, nylon and polyester come from oil and coal.

Synthetic fibers are manufactured by a number of processes using  petrochemicals. A polymer is made up of many repeating units called monomers.In contrast , the natural cotton ,  is a form of polymer called cellulose, which is made of a large number of glucose units.Fiber classification in reinforced plastics falls into two classes:

(i) short fibers, also known as discontinuous fibers, with a general aspect ratio (defined as the ratio of fiber length to diameter) between 20 to 60, and (ii) long fibers, also known as continuous fibers, the general aspect ratio is between 200 to 500

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Test Your Knowledge on Synthetic fibers and Plastics

Science_Std. VIII_ Synthetic fibres and Plastics

Congratulations - you have completed Science_Std. VIII_ Synthetic fibres and Plastics. You scored %%SCORE%% out of %%TOTAL%%. Your performance has been rated as %%RATING%%
Your answers are highlighted below.
Question 1
Fibre obtained by chemical treatment of wood pulp is called ___________.        
A
Natural silk
B
Rayon
C
Nylon
D
Polyester
Question 2
Nylon is obtained by __________        
A
Treating wood pulp
B
Solidifying water
C
Mixing coal, air and water
D
Mixing chemicals
Question 3
_____________ is stronger than steel wire.        
A
Cotton fibre
B
Silk thread
C
Plastic thread
D
Nylon fibre
Question 4
________ is polyester used for making bottles, utensils, films.        
A
Leather
B
Nylon
C
PET
D
Plastic
Question 5
Polyester is repeating units of _______.        
A
Ether
B
Beads
C
Carbon
D
Ester
Question 6
_______ is a synthetic fibre used for making woollen clothes.        
A
Acrylic
B
Polyester
C
Fibre
D
Cotton
Question 7
You must not wear synthetic fibres while working with fire because _______.        
A
They make you feel cold and so you may get a frost-bite
B
They are lustrous and so they shine under the flame
C
They melt on heating and stick to your body when they catch fire
D
None of the above
Question 8
Synthetic fibres are made using ______ as raw materials.        
A
Woollen products
B
Polymers
C
Cotton
D
Petrochemicals
Question 9
_________ is used commonly for making parachute ropes.        
A
Polyethene
B
Polyester
C
Nylon
D
Silk
Question 10
___________ is a popular polyester.        
A
Plastic
B
Polyethene
C
Rayon
D
Terylene
Once you are finished, click the button below. Any items you have not completed will be marked incorrect. Get Results
There are 10 questions to complete.

 

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