Which of the following is an example of a non-ferrous metal?

Brass is considered a non-ferrous metal because it does not contain significant amounts of iron, which is the defining characteristic of ferrous metals. Non-ferrous metals are generally more resistant to corrosion and oxidation, making them valuable in a variety of applications, including plumbing, electrical components, and decorative pieces.

Brass, an alloy of copper and zinc, exhibits desirable properties such as good machinability and wear resistance, which further enhances its practical uses. The inclusion of copper in brass allows for improved conductivity compared to many ferrous materials, thereby making it suitable for applications where electrical conductivity is essential.

In contrast, steel, iron, and other ferrous metals contain a large proportion of iron. These materials tend to be stronger and more durable in terms of structural applications but are also more susceptible to rust and corrosion when exposed to moisture. Thus, their use in environments where rust can be a concern is limited compared to non-ferrous options like brass.