A. Carbon monoxide
B. Methane
C. Hydro-oxide
D. Sulphur dioxide
🧠 Explanation:
Sulphur dioxide, a pollutant, corrodes iron and steel structures by forming acidic compounds when mixed with water. This damages buildings, bridges, and industrial equipment, making it a key concern in environmental and industrial science. Understanding this process helps engineers develop protective coatings and pollution control measures. It’s a vital topic for students and professionals studying material durability and environmental impact, emphasizing the need for sustainable practices to reduce air pollution and preserve infrastructure, especially in industrial regions where sulphur dioxide emissions are high.
