8.3 Urban air pollution Quiz
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5 questions, one answer each
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1. Which gas is produced mainly by burning coal containing sulfur?
- A. Carbon monoxide
- B. Sulfur dioxide
- C. Nitrogen oxides
- D. Ozone
2. Acid rain contains mainly:
- A. Sulfuric and nitric acids
- B. Hydrochloric acid only
- C. Carbonic acid only
- D. Phosphoric acid
3. Which is a natural source of particulate matter?
- A. Diesel exhaust
- B. Wildfires
- C. Coal power stations
- D. Crop burning for land clearance by farmers
4. Which strategy reduces SO2 at the source?
- A. Liming lakes
- B. Flue-gas desulfurisation
- C. Planting trees on a roadside
- D. Air quality alerts
5. Why does acid rain damage limestone buildings?
- A. Acid reacts with calcium carbonate
- B. Rain washes away paint
- C. Limestone absorbs NOx as fuel
- D. Acids make the stone expand in heat