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| Q. |
Solder metal is an alloy of – |
| A. | lead and tin |
| B. | lead and antimony |
| C. | copper and zinc |
| D. | copper and tin |
| Answer» A. lead and tin | |
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Explanation: A solder is a fusible metal alloy of tin and lead with a melting point or melting range of 90 to 450°C, used in a process called soldering where it is melted to jain metallic surfaces. It is especially useful in electronics and plumbing. |
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