Which metal does not contain iron, has good corrosion resistance but tarnishes and is non-magnetic?

Which metal does not contain iron, has good corrosion resistance but tarnishes and is non-magnetic?

• A. Non-ferrous metal
• B. Ferrous metal
• C. Stainless steel
• D. Alloy

Answer: (A)

Non-ferrous metals are metals that do not contain iron. This means they are not attracted to magnets, unlike ferrous metals that contain iron. They also tend to resist corrosion in many environments, which is why materials like aluminum and copper alloys are popular in shipbuilding, electronics, and architectural use. At the same time, many non-ferrous metals can tarnish through surface oxidation or chemical reactions—copper develops a patina, silver tarnishes, and some aluminum surfaces dull with oxide layers. The combination of no iron, non-magnetic behavior, good resistance to deep corrosion, yet potential surface tarnish fits the description, making non-ferrous metal the best match.

Non-ferrous metals are metals that do not contain iron. This means they are not attracted to magnets, unlike ferrous metals that contain iron. They also tend to resist corrosion in many environments, which is why materials like aluminum and copper alloys are popular in shipbuilding, electronics, and architectural use. At the same time, many non-ferrous metals can tarnish through surface oxidation or chemical reactions—copper develops a patina, silver tarnishes, and some aluminum surfaces dull with oxide layers. The combination of no iron, non-magnetic behavior, good resistance to deep corrosion, yet potential surface tarnish fits the description, making non-ferrous metal the best match.