The smog which is formed at high temperature is

Options

A. London smog
B. Classical smog
C. Los Angeles smog
D. Sulfurous smog

Answer

To answer the question "The smog which is formed at high temperature is," we need to analyze the different types of smog mentioned in the options and identify which one is associated with high temperatures.

### Step-by-Step Solution:

1. **Identify the Types of Smog**: The question provides four types of smog: London smoke, classical smoke, Los Angeles smoke, and Sulphurous smoke.

2. **Understand the Characteristics of Each Type**:
- **London Smoke, Classical Smoke, and Sulphurous Smoke**: These types of smog are typically formed in cold and humid climates. They are associated with high concentrations of sulfur dioxide and particulate matter, primarily from the combustion of fuels.
- **Los Angeles Smoke**: Also known as photochemical smog, this type of smog is produced when nitrogen oxides and hydrocarbons react in the presence of sunlight. It is characteristic of dry and warm climates.

3. **Determine the Conditions for Each Type**:
- The first three types (London, Classical, and Sulphurous) are linked to cold and humid conditions.
- Los Angeles smoke is linked to high temperatures, specifically in dry and warm climates.

4. **Conclude the Correct Answer**: Since the question specifically asks for the type of smog formed at high temperatures, the correct answer is **Los Angeles smoke**.

### Final Answer:
The smog which is formed at high temperature is **Los Angeles smoke**.

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