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| Q. |
Solids which conduct electricity at higher temperature but not at lower temperature are called |
| A. | super-conductor |
| B. | metallic-conductor |
| C. | semi-conductor |
| D. | insulator |
| Answer» C. semi-conductor | |
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Explanation: Semiconductors are insulators at low temperatures and reasonably good conductors at higher temperatures. As temperature increases, the semiconductor material becomes a better and better conductor. |
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