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What is smog? How is smog formed? What are its harmful effects?

ScienceClass 8ICSEAnswered 28 Mar 2026
Answer

A thick fog- like layer in the atmosphere which is made up of smoke is called smog. The smoke released is released into the atmosphere due to various activities like automobile exhausts, power plants, and factories and burning of firewood and dung cakes etc., the smoke may contain the oxides of nitrogen which combines with other air pollutants and fog to form smog.

Smog causes respiratory problems like cough and asthma and also accidents due to the invisible road due to smog.

Science · Class 8