Solder is an alloy of______________?
Correct answer: B. tin and lead
- A. copper and aluminium
- B. tin and lead
- C. nickel, copper and zinc
- D. silver, copper and lead
Explanation
Traditional solder is a low-melting alloy of tin and lead, allowing components and wires to be joined without melting the base metals. Lead-free solders use other additions, but tin-lead is the conventional answer.
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