Question

14. Why iron appears different from copper and aluminium.

Answer 1

• Metals are lustrous due to which metal has a shiny appearance.
• So, Iron, Copper, and Aluminium have a shiny appearance. But the Iron metal has a high affinity toward oxygen.
• Hence, iron reacts with oxygen in presence of moisture and forms a dull layer at the surface of the metal while steel and aluminium do not form a layer.