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| Q. |
Magnetic keepers are pieces of – |
| A. | Nickel |
| B. | Cobalt |
| C. | Steel |
| D. | Soft iron |
| Answer» D. Soft iron | |
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Explanation: Magnetic keepers arc pieces of soft iron that are placed across the poles of a bar magnet or a horseshoe magnet. They help prevent the loss of magnetism. |
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