Which of the following compounds gives a mixture of `SO_(2)` and `SO_(3)` on heating ?
Which of the following compounds gives a mixture of `SO_(2)` and `SO_(3)` on heating ?
A. `ZnSO_(4)`
B. `Fe_(2)(SO_(4))_(3)`
C. `FeSO_(4)`
D. `CaSO_(4)`
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