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| Q. |
Corrosion is a destructive attack on metals |
| A. | Which may be chemical or electrochemical in nature |
| B. | Which is basically caused by atmospheric air |
| C. | Which is caused by contact with other metals |
| D. | At high temperature |
| E. | None of the above |
| Answer» A. Which may be chemical or electrochemical in nature | |
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