Question
Which of the following is not considered as air pollutant ?
This question was previously asked in
CUET PG 2026 Agri-Business Management Question Paper (25-Mar-2026) (Shift 2)
The correct answer is
Oxygen
Identifying Air Pollutants: What Isn't an Air Pollutant?
An air pollutant is a substance in the air that can cause harm to humans, other living organisms, or damage the environment. Identifying these pollutants is crucial for environmental monitoring.
Common Air Pollutants:
- Smog: A visible air pollution resulting from industrial emissions and vehicle exhaust, often containing ozone, particulate matter, and other harmful chemicals.
- Sulphur Dioxide (SO2): A gas primarily released from burning fossil fuels (like coal) in power plants and industrial facilities. It contributes to acid rain and respiratory problems.
- Hydrocarbon: Organic compounds containing hydrogen and carbon. While some occur naturally, many are released from burning fuels, solvents, and industrial processes, contributing to smog formation and health issues.
Why Oxygen is Not an Air Pollutant:
Oxygen (O2) is a vital component of the Earth's atmosphere and is essential for respiration and the survival of most living organisms. Unlike the substances listed above, oxygen does not cause harm at normal atmospheric concentrations. Its presence is fundamental to life.
Conclusion:
Based on the definitions, oxygen is a necessary atmospheric gas, not a harmful contaminant. Therefore, it is not considered an air pollutant.
The correct option is Oxygen.
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