The possibility of photochemical smog formation will be minimum at

The formation of photochemical smog depends on several factors, including sunlight, temperature, and the presence of pollutants such as nitrogen oxides and volatile organic compounds.

1) Mumbai in May may also have some possibility of photochemical smog formation because the temperature and sunlight are relatively high in May.

2) Kolkata in October may have some possibility of photochemical smog formation because the temperature and sunlight are still relatively high in October.

3) New-Delhi in August (Summer) is more likely to have photochemical smog formation because the temperature and sunlight are at their peak in the summer months, and there is a high level of air pollution in the city due to various anthropogenic activities.

4) Srinagar, Jammu and Kashmir in January is less likely to have photochemical smog formation because the winter season typically has less sunlight and lower temperatures, which are not conducive to the formation of photochemical smog.