Los Angeles smog is

Options

A. London smog
B. industrial smog
C. photochemical smog
D. none of these.

Answer

**Step-by-Step Solution:**

1. **Identify the Type of Smog**: The question asks about the type of smog associated with Los Angeles. We need to consider the characteristics of smog in this region.

2. **Recall Historical Context**: Photochemical smog was first observed in Los Angeles in the year 1950. This historical context helps us link the location with the type of smog.

3. **Understand the Composition**: Photochemical smog is primarily formed from the reaction of nitrogen oxides and volatile organic compounds. These substances are mainly emitted from automobile exhaust.

4. **Role of Sunlight**: The formation of photochemical smog requires sunlight. The ultraviolet rays from the sun facilitate the chemical reactions that lead to the production of ozone and nitrogen dioxide.

5. **Effects of Photochemical Smog**: This type of smog results in a light brown coloration of the atmosphere, reduces visibility, and can damage plant life.

6. **Differentiate from Other Types of Smog**: It’s important to contrast photochemical smog with other types, such as London smog, which is primarily composed of sulfur oxides and is associated with coal burning.

7. **Conclusion**: Based on the information gathered, we conclude that Los Angeles smog is classified as photochemical smog.

**Final Answer**: Los Angeles smog is photochemical smog.

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