Question

study the corrosion of different metals available at home and note down the compound and colour formed

Answer 1

Copper reacts with moisture, carbon di-oxide and forms a green layer of copper carbonate materials.e.g copper coins and copper wires.
Silver reacts with sulphur from the air to form a coating of black silversulphide.e.g cups made of silver
Rusting of iron occurs due to presence of oxygen and hydrogen moisture and forms a brown colored layer of ferrous oxide.e.g iron nails