Question

Which of the following is a lung irritant?

• A. \( CO \)
• B. \( NO_2 \)
• C. \( CO_2 \)
• D. \( CH_4 \)

Hint:

Nitrogen dioxide (\( NO_2 \)) is a major air pollutant affecting lung function.

Answer 1

The Correct Option is B

Step 1: Identification of Lung Irritants \( NO_2 \): Causes respiratory issues and lung inflammation. \( CO \), \( CO_2 \), and \( CH_4 \) are not primary lung irritants.