Synthetic fibres and Plastics -10 Multiple Choice Questions

 
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Synthetic fibres and Plastics -10 Multiple Choice Questions

synthetic_fibres

Synthetic fibers and plastics are alternatives to cotton which is a natural fibre obtained from the cotton plant.Synthetic fibres 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.Characteristics of synthetic fibers:

Test Your Knowledge on Synthetic fibres and Plastics

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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
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