Question

Nitrogen oxides produced from the emission of automobiles and power plants, are the source of fine particles, which lead to

• A. Phochemical smog
• B. Dry acid deposition
• C. Industrial smog
• D. Wet acid deposition
• E. Both B and D

Answer 1

The correct option is E Both B and D

Acid rain is a mixture of wet and dry deposition (deposited material) from the atmosphere containing higher than normal amounts of nitric and sulfuric acids. Sulfur dioxide ($S{O}_2$) and nitrogen oxides (NOx) are the principal pollutants, that cause acid precipitation. $S{O}_2$ and NOx emissions released to the air react with water vapor and other chemicals to form acids that fall back to earth. The majority of NOx comes from cars, buses, trucks, and other forms of transportation and from power plants. Therefore, the correct answer is option E.