Question

What are the health effects associated with exposure to Nitrogen Dioxide (NO2)?

1. Irritation of the airways.
2. Improvement in lung function.
3. Aggravation of existing respiratory diseases.
4. Reduction in asthma symptoms.

• A. ii, iv
• B. i only
• C. iii only
• D. i, iii

Answer 1

Answer:

D. i, iii

• Nitrogen dioxide (NO2) is a reddish-brown gas that is soluble in water, and a strong oxidant.

• Ambient sources of NO2 results from high temperature combustion of fuels in processes such as those used for heating, transportation, industry and power generation.

• Household sources of nitrogen oxides (NOx) include equipment that burn fuels such as furnaces, fireplaces and gas stoves and ovens.

• Exposure to nitrogen dioxide can irritate airways and aggravate respiratory diseases.