Question

Which gas is evolved on heating crystals of ferrous sulphate? *
Nitrogen dioxide
carbon dioxide
hydrogen
sulphur dioxide

Answer 1

Answer:

D . On heating, ferrous sulphate crystals lose water and anhydrous ferrous sulphate (FeSO4) is formed. So their 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).

Explanation:

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Answer 2

Answer:

sulphur dioxide is usually used