Question

Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity ?

• A. $ NO$
• B. $N_2O_5 $
• C. $N_2O $
• D. $NO_2 $

Answer 1

The Correct Option is B

The question asks which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity. Let's analyze each option to find the correct answer:

1. NO (Nitric Oxide): It is primarily a product of combustion processes from motor vehicles and power plants. It also forms naturally in the environment during lightning strikes. Therefore, NO is a common atmospheric pollutant.
2. N_2O_5 (Dinitrogen Pentoxide): This compound is not typically released directly into the atmosphere. It exists under specific conditions and is not a direct result of common emissions from human or natural activities. Hence, it is not classified as a common atmospheric pollutant.
3. N_2O (Nitrous Oxide): It is produced naturally in the environment through the nitrogen cycle and is also emitted from agricultural and industrial activities. Thus, N_2O is a common pollutant.
4. NO_2 (Nitrogen Dioxide): It is a significant air pollutant originating from vehicle emissions, industrial activity, and natural processes like wildfires. Therefore, NO_2 is a common atmospheric pollutant.

Based on the above analysis, the oxide of nitrogen that is not a common atmospheric pollutant introduced by both natural and human activity is N_2O_5.