NEET BIOLOGY

Detailed explanation-1: -Sulfurous smog (London smog) Therefore, cities located close to the equator or in the subtropical sphere are not affected by it. This type of air pollution emerges as a result of burning coal, the accumulation of particulate matter from industrial activity and a drop in temperature.

Detailed explanation-2: -The sheer size of London, combined with a dense road network and tall buildings, means central London is one of the most polluted places in the UK, according to the London Air Quality Network.

Detailed explanation-3: -Photochemical smog is oxidising in nature. And London smog is reducing in nature. Thus, the statement ‘London smog is oxidising in nature’ is false.

Detailed explanation-4: -Smog is air pollution that reduces visibility. The term “smog” was first used in the early 1900s to describe a mix of smoke and fog. The smoke usually came from burning coal. Smog was common in industrial areas, and remains a familiar sight in some cities today. Today, most of the smog we see is photochemical smog.