02. When ferrous sulphate crystals are heated in a dry boiling tube, which gas or gases
are produced
- a) 02 b) SO2 c) SO3 d) Both b&c.
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Answer:
d.both so2 and so3
Explanation:
On heating, ferrous sulphate crystalslose 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 ferricoxide (Fe2O3), sulphur dioxide (SO2) and sulphur trioxide (SO3).
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