Leaving Certificate Technology – Materials Practice Test

Which statement correctly describes non-ferrous metals?

They contain iron They are highly magnetic They do not contain iron and have higher conductivity They are brittle

Correct Answer:

They do not contain iron and have higher conductivity

Explanation:

Non-ferrous metals are those that do not contain iron. Because they lack iron, they’re typically not magnetic and resist corrosion better than many iron alloys. A standout property is their electrical conductivity—metals like copper and aluminum conduct electricity very well, which is a common reason they’re used in wiring and electrical components. So describing non-ferrous metals as not containing iron and having high conductivity fits well with how they’re commonly used and how they differ from iron-containing metals.

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