Single correct option
Which one of the following alloys does not contain copper?
- A. Brass
- B. Bronze
- C. Gun metal
- D. Solder
Show answer and solution
Answer: (D) Solder
Solder is an alloy of lead and tin with a low melting point, used to join electrical components. Brass is copper and zinc, bronze is copper and tin, and gun metal is copper, tin and zinc. The trap is that all the others are familiar copper alloys, so solder is the odd one out.
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