O-LevelChemistryChemistry of the Environment5070/12 · Oct/Nov 2021 · Q261 Mark
Which statement about sulfur dioxide, SO2, is correct?
AIt is dissolved in water to make sulfuric acid for car batteries.
BIt is the final product of the Contact process.
CIt is used as a food preservative.
DIt turns aqueous potassium iodide brown.
✓ Correct answer
C: It is used as a food preservative.
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