Question

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

• A. N₂O₅
• B. N₂O
• C. NO₂
• D. NO

Answer 1

The Correct Option is A

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

1. N₂O₅ (Dinitrogen pentoxide)
   • N₂O₅ is primarily used in laboratories and does not occur naturally or commonly in significant quantities in the atmosphere.
   • It is not typically released by human activities into the atmosphere as a pollutant.
2. N₂O (Nitrous oxide)
   • Commonly known as laughing gas, N₂O is released into the atmosphere from agricultural practices, vehicle emissions, and natural processes.
   • It is a significant greenhouse gas contributing to global warming.
3. NO₂ (Nitrogen dioxide)
   • NO₂ is an important air pollutant, released from combustion processes such as those occurring in vehicles and industrial facilities.
   • It contributes to smog and acid rain and poses health risks.
4. NO (Nitric oxide)
   • Formed during combustion processes in engines and power plants, NO is a contributor to air pollution.
   • It readily reacts with oxygen to form NO₂, leading to similar environmental and health concerns.

Based on this analysis, the correct answer is N₂O₅ (Dinitrogen pentoxide) because it is not commonly introduced into the atmosphere as a pollutant from natural or human activities.