🔍 Key Concepts

• Monel metal as a corrosion‑resistant alloy used in marine environments • Typical alloying partners of nickel, copper, zinc, and tin in common industrial metals • Difference between bronze, brass, and Monel

💭 Think About

• Which of these answer choices describes an alloy family that is strongly associated with seawater and marine service? • Look at each pair: which combinations are normally used for making bronze or brass, and which pair forms a separate, well‑known alloy type? • Think about which metal in the pair is the primary one in Monel and which is the major secondary component.

✅ Before You Answer

• Identify which option lists a pair that is not typically called bronze or brass. • Recall that bronze is primarily copper plus another element; match that with the choices to rule some out. • Confirm which pair is famous for forming a high‑nickel, highly corrosion‑resistant alloy often specified for seawater piping and fittings.