| In the winter, we use woollen clothes because |
| 1. wool is a good conductor of heat. |
| 2. there is air trapped in between the wool fibers. This air prevents the flow of heat from our body to the cold surroundings. |
| Which of the statements) given above is/are correct? |
A) Only 1
B) Only 2
C) Both 1 and 2
D) Neither1nor 2
Correct Answer: B
Solution :
[b] Wool is a poor conductor of heat. The air trapped in between the wool fibers prevents the flow of heat from our body to the cold surroundings. When wool fibers are packed together, they form millions of tiny air pockets which trap air, and in turn serves to keep warmth in during winter.
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