Which statement about stainless steel is true?

• A. Stainless steel is a soft metal.
• B. Stainless steel is heavier than water.
• C. Stainless steel is a poor conductor of electricity.
• D. Stainless steel is much stronger than iron.

Answer: (C)

Electrical conductivity is the property being tested here. Stainless steel, though a metal, contains chromium and other alloying elements that disrupt how freely electrons can move. This increases resistivity, so it doesn’t conduct electricity as well as common wiring metals like copper or aluminum. In practical terms, stainless steel can carry current, but it’s considered a poor conductor relative to those metals, which is why it’s chosen for strength and corrosion resistance rather than for electrical wiring. The other statements don’t consistently hold across all stainless grades: it isn’t a soft metal, the density is high so it sinks in water, and strength compared to iron varies by grade, so those aren’t as reliable as the conductivity point.