Question

In which of the following cities photochemical smog is minimum?

• A. New Delhi
• B. Mumbai
• C. J & K
• D. Kolkata

Hint:

Photochemical smog is more prevalent in warm and sunny conditions due to higher photochemical activity

Answer 1

The Correct Option is C

To determine in which city photochemical smog is minimum, let's first understand what photochemical smog is and the conditions under which it forms.

Photochemical smog is a type of air pollution that is produced when sunlight reacts with nitrogen oxides and volatile organic compounds (VOCs) in the atmosphere. It is particularly prevalent in urban areas with high traffic levels and industrial activity, as these are significant sources of nitrogen oxides and VOCs.

Here are the cities presented in the options, along with the conditions that affect the formation of photochemical smog:

1. New Delhi: This city is known for having high levels of pollution, particularly from vehicles and industries, making it highly susceptible to photochemical smog formation.
2. Mumbai: As a metropolitan city with substantial industrial areas and heavy traffic, Mumbai also exhibits conditions conducive to the formation of photochemical smog.
3. Kolkata: Similar to the other metropolitan cities, Kolkata also experiences significant vehicular and industrial emissions, contributing to photochemical smog.
4. Jammu & Kashmir (J & K): This region is characterized by less industrial activity and lower vehicular traffic relative to the other cities listed. The mountainous terrain and relatively lower pollution levels contribute to minimal formation of photochemical smog.

Given the above explanations, photochemical smog is expected to be minimal in Jammu & Kashmir due to its lesser pollution levels and reduced sources of smog-forming emissions.

Thus, the correct answer is J & K.