Which one of the following is wrong?
1. | A comb run through one’s dry hair attracts small bits of paper. |
2. | Ordinary rubber is an insulator. But special rubber tyres of aircraft are made slightly conducting. |
3. | Vehicles carrying inflammable materials usually have metallic ropes touching the ground during motion. |
4. | A bird perches on a bare high power line and gets a fatal shock. A man standing on the ground touches the same line and nothing happens to the man. |
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