Q. Which one of the following is a secondary pollutant?
(A) Ozone
(B) Carbon Monoxide
(C) Hydrocarbon
(D) Volatile Organic Carbon (VOC)
Solution: Ozone
Solution: Secondary pollutants are type of pollutant that is formed in the atmosphere. These pollutants are not emitted directly from a source, such as vehicles or power plants. When primary pollutants formed from combustion processes react in the atmosphere, secondary pollutants are formed. For example, ozone. So, the correct answer is ‘O3
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