Which metal is listed as a combustible metal in such fires?

• A. Magnesium
• B. Titanium
• C. Sodium
• D. Aluminum

Answer: (A)

Combustible metals are those that can ignite and continue to burn in air under fire conditions. Magnesium is a classic example because it ignites readily and burns with a bright, intense flame that can sustain itself as long as heat and oxygen are present. This combination of easy ignition and persistent burning makes magnesium a standard metal listed as combustible in fire safety references and exams. The other metals listed don’t fit this typical designation in the same way: titanium is highly resistant to ignition, aluminum can burn only in very fine or specific conditions, and sodium is highly reactive but is treated as a separate hazard rather than a common combustible metal in standard metal-fire classifications.