Question

colour of gas ebolved on heating ferrous suphte​

Answer 1

colour changes from light green to white. On further heating, anhydrous ferrous sulphate decomposes to form ferric oxide (Fe2O3), sulphur dioxide (SO2) and sulphur trioxide (SO3). So, the gas emitted smells like burning sulphur.

Answer 2

Hey mate here is your answer

on heating ferrous sulphate it's colour changes from light green to white. On further heating, anhydrous ferrous sulphate decomposes to form ferric oxide (Fe2O3), sulphur dioxide (SO2) and sulphur trioxide (SO3). So, the gas emitted smells like burning sulphur. And the gas is having white colour/ fumes.....

hope it helps...............