Which element, when combined with iron, is essential for making the steel used in construction?

Explanation

Steel is primarily an alloy of iron and carbon, with carbon content typically ranging from about 0.05 to 2 percent by weight. Adding carbon to iron significantly increases its strength and hardness compared to pure iron, making steel suitable for construction, tools, and machinery. Varying the carbon content and adding other elements produces different grades of steel with different properties. Explore more Everyday Science MCQs on mcqstutor to keep practicing.