Question

What is the name and colour of the residue obtained by the decomposition of ferrous sulphate?

Answer 1

so2 and so3 and also fe3o4. and It is reddish brown in colour.

Answer 2

Here is ur answer :-

FESO4.7H20 -green in color.
On heating , loses water of crystallisation and changes from
green -  white - brown .

I hope it helps u dear ☺️....