Question

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

Answer 1

Iron (Fe) : "Rust". It is brown in colour. The compound is $Fe_2O_3.xH_2O$

Copper (Cu) : It is blue-green/greenish blue in colour. The compound is $CuCO_3.CuOH_2$

Silver (Ag) : "Tarnishing". It is dark grey in colour. The compound is $Ag_2S$