Which of the following is a disadvantage of synthetic fibre?
melt before burning
repel moisture
clothes are garishly lustrous
All of the above
A
clothes are garishly lustrous
B
All of the above
C
melt before burning
D
repel moisture
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Solution
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The correct option is D All of the above Clothes made of pure synthetic fibres are garishly lustrous. Synthetic fibres melt before burning. So clothes made of such fibres stick to the skin when in contact with a flame, causing burns. Therefore, they should not be worn in the kitchen or while setting off fireworks.
Synthetic fibres are generally hydrophobic, i.e., they repel moisture (e.g., sweat) and do not absorb it. They do not allow enough circulation of air either. So clothes made of synthetic fibres are not comfortable to wear as they do not allow sweat to evaporate easily.
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