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| Q. |
Which of the following are bad conductors of electricity? |
| A. | Mica and Quartz |
| B. | Metals and Rubber |
| C. | Metals and Mica |
| D. | Mica and Rubber |
| Answer» A. Mica and Quartz | |
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Explanation: Metals are good conductors of electricity, because they have free electrons. Micaand quartz are examples of insulators (bad conductors of electricity), they don't have free electrons. |
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