Moderate

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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