Please help me with this question's solution

Dear Student
All the statements are correct.
Figure shows the correct way of heating the boiling tube containing crystals of ferrous sulphate.
On heating ferrous sulphate crystals (green colour) decompose into ferric oxide (brown colour) with the evolution of gases sulphur dioxide and sulphur trioxide.
Option D is correct.
Regards

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The correct option is d all of the above are correct
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