Question

what will you observe when carbon disulphide is added to this compound iron sulphide

Answer 1

Addition of carbon disulphide to a mixture containing iron fillings and sulphur powder, leads to formation of a clear yellow solution when sulphur powder dissolves in carbon disulphide, on gentle shaking. Iron fillings being insoluble settle in the bottom. These can be separated by filtration. When the solution is allowed to evaporate, powder of solid sulphur is obtained.
Here iron filling is nothing but iron compound and sulphur is sulphur powder.