Which metal category contains iron?

• A. Nonferrous
• B. Ferrous
• C. Alloys
• D. Precious metals

Answer: (B)

Ferrous metals are those that contain iron. Iron itself, plus common iron-based alloys like steel and cast iron, fall into this category. That makes ferrous the correct choice because the defining feature here is iron content. Nonferrous metals do not contain iron (examples include aluminum, copper, and titanium). Alloys are materials made from two or more elements, which can include ferrous materials (like steel), but the key distinction for this question is the presence of iron. Precious metals refer to highly valued metals such as gold, silver, and platinum, which aren’t defined by iron content.