Smog is
Smog is
A). Nothing but black smoke
B). A combination of smoke and fog
C). A liquid particle resulting from vapour condensation
D). A solid particle, e.g., fllyash
2 answers
A combination of smoke and fog
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 cities today. Today, most of the smog we see is photochemical smog.
Option B. Combination of smoke and fog
Explanantion -Smog is a combination of Smoke and fog. Hence the word smog is also derived from the two words.
smog-
Smog is a kind of air pollution that is produced by the photochemical reaction of sunlight with nitrogen oxides and hydrocarbons which have been released into the atmosphere, specifically by automotive emissions.
Causes of smog
Smog is created out of nitrogen, ozone, oxides of sulfur, smoke and other particles. It can be caused due to agricultural fibres and natural forest fires as well. The reaction of these chemicals can lead to smog. It can lead to health hazards such as cancer, bronchitis, asthma, emphysema and many more.
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