Environmentalhard · Past Paper
What is the main chemical process behind 'Acid Rain' eroding limestone statues?
AOxidation of calcium
BReduction of carbonates
CReaction of H2SO4 with CaCO3 to form CaSO4, CO2, and H2O
DPhotosynthesis of minerals
✓ Correct Answer: C — Reaction of H2SO4 with CaCO3 to form CaSO4, CO2, and H2O
Sulfuric acid in rain reacts with calcium carbonate (limestone/marble) to form gypsum, which is easily washed away.
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