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Question

Why do woollen clothes keep us warm in winter?

A
Wool is a good conductor of heat.
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B
Wool traps heat effectively between its layers.
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C
Wool is a bad conductor of heat.
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D
Wool produces its own heat from its layers.
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Solution

The correct options are

(B) Wool traps heat effectively between its layers.

(C) Wool is a bad conductor of heat.

  1. Wool is a type of animal fabric that has several layers.
  2. Wool is a bad conductor of heat, so it does not allow the body heat to escape into the surroundings.
  3. Warm air can be trapped between the layers for a long time. This makes wool a suitable and preferred material for clothing in colder seasons like winter.

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