When mild steel is cut, it forms a light gray colored oxide which primarily consists of ____.
A) Fe2O3
B) Fe3O4
C) Fe2O6
D) Fe4O8

Question

​When mild steel is cut, it forms a light gray colored oxide which primarily consists of ____.
A) ​Fe2O3
B) ​Fe3O4
C) ​Fe2O6
D) ​Fe4O8

Quizplus · Accepted Answer

The light gray colored oxide formed when mild steel is cut primarily consists of Fe3O4, also known as magnetite. This is because the cutting process involves exposing the metal to oxygen from the air, which then reacts with the iron in the steel to produce the oxide. Fe2O3 (hematite) is another oxide that can form on iron, but it typically has a reddish hue and is not as common in cutting processes. Fe2O6 and Fe4O8 are not commonly found oxides in steel.

​When Mild Steel Is Cut, It Forms a Light Gray

When Mild Steel Is Cut, It Forms a Light Gray