Question

In which of the following cities photochemical smog is minimum?

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

Answer 1

The Correct Option is C

The correct answer is (C). J & K
The amount of photochemical smog in a city depends on several factors, including the level of air pollution, the weather conditions, and the topography of the region.
Without knowing the current levels of air pollution in each city, it is difficult to determine which city has the minimum photochemical smog.
However, based on historical data and trends, it can be said that cities with lower levels of air pollution and well-implemented pollution control measures are likely to have lower levels of photochemical smog.
In recent years, New Delhi and Kolkata have been known to have high levels of air pollution, which has led to severe cases of photochemical smog during certain seasons. On the other hand, J&K is a mountainous region with lower levels of industrial activity and is less likely to have high levels of photochemical smog. Mumbai, being a coastal city, is also less prone to photochemical smog.
Therefore, if current air pollution levels are not known, we cannot determine with certainty which of the four cities has the minimum photochemical smog. However, in general, cities with lower levels of air pollution and well-implemented pollution control measures are more likely to have lower levels of photochemical smog.

Answer 2

Photochemical smog is formed due to the reaction of pollutants in the presence of sunlight. The major pollutants involved in the formation of photochemical smog are nitrogen oxides (NOx) and volatile organic compounds (VOCs). The reaction of NOx and VOCs in the presence of sunlight leads to the formation of ground-level ozone and other secondary pollutants.
The factors that contribute to the formation of photochemical smog include sunlight, temperature, wind, and topography. The concentration of pollutants and their sources also play an important role.
Based on these factors, it is difficult to determine which city has the minimum photochemical smog. However, in general, cities with lower levels of vehicular traffic and industrial activity tend to have lower levels of pollutants, and hence lower levels of photochemical smog.
Out of the cities listed, J & K (Jammu and Kashmir) may have lower levels of photochemical smog compared to New Delhi, Mumbai, and Kolkata, as it is a less urbanized and industrialized region. However, more detailed information about the concentration of pollutants and their sources in each city would be required to make a definitive statement about which city has the minimum photochemical smog.
Answer. C