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Question

Woolen clothes have _____ that help in insulation. 


A
thin fibres
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B
packets of trapped air
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C
packets of water
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D
heating coils
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Solution

The correct option is C packets of trapped air
Woolen clothes are more prefered in winter as they are poor conductors of heat. They also have packets of trapped air which further helps in insulation as air is also a poor conductor of heat. 

Physics

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