Photochemical smog is formed in

Options

A. Summer during morning time
B. summer during day time
C. Winter during morning time
D. winter during day time

Answer

### Step-by-Step Solution:

1. **Understanding Photochemical Smog**:
- Photochemical smog is a type of air pollution that occurs when sunlight reacts with pollutants in the atmosphere, particularly hydrocarbons and nitrogen oxides.

2. **Identifying Conditions for Formation**:
- The formation of photochemical smog requires specific conditions:
- Presence of sunlight
- Presence of pollutants (such as hydrocarbons and nitrogen oxides)
- Typically occurs in warm, dry climates.

3. **Analyzing Seasonal Variations**:
- Photochemical smog is more prevalent in the summer because:
- Higher temperatures increase the rate of chemical reactions.
- Longer daylight hours provide more sunlight for the reactions to occur.

4. **Determining Time of Day**:
- The time of day also plays a crucial role:
- During the daytime, sunlight is at its peak, which enhances the photochemical reactions leading to smog formation.
- Morning times may not have sufficient sunlight compared to midday.

5. **Conclusion**:
- Therefore, photochemical smog is formed maximally during the summer and daytime due to the combination of high temperatures and abundant sunlight.

### Final Answer:
Photochemical smog is formed maximally during the summer and daytime.

---