Question

Which of these gases is an atmospheric pollutant?
1. carbon monoxide
2. nitrogen dioxide
3. sulfur dioxide

• A. 3 only
• B. 2 only
• C. 1, 2 and 3
• D. 1 only

Answer 1

The correct option is C 1, 2 and 3

These all gases are atmospheric pollutants as all lead to air pollution. coz of
Nitrogen dioxide $\left(N{O}_2\right)$, sulfur dioxide $\left(S{O}_2\right)$, and carbon monoxide are important ambient air pollutants. High-intensity, confined space exposure to $N{O}_2$ has caused catastrophic injury to humans, including death. Ambient $N{O}_2$ exposure may increase the risk of respiratory tract infections through the pollutants interaction with the immune system. Sulfur dioxide $\left(S{O}_2\right)$ contributes to respiratory symptoms in both healthy patients and those with underlying pulmonary disease. Controlled human exposure studies have demonstrated that experimental $S{O}_2$ exposure causes changes in alway physiology, including increased always ressistance. Both acute and chronic exposure to carbon monoxide are associated with increased risk for adverse cardiopulmonary events, including death. However, studies have not demonstrated a clear dose-dependent health risk response to increasing amounts of these pollutants except at high concentrations. In addition, a number of studies examining the effects of ambient level exposure to $N{O}_2,S{O}_2$ and CO have failed to find associations with adverse health outcomes.