Question

How does nitrogen affect the human body?

(a) Increases vulnerability to pathogens

(b) Destroys the macrophages

(c) Injures the defence mechanism of the lungs

(d) All of the mentioned

This question was posed to me in a job interview.

The doubt is from Air Pollution in chapter Air Pollution of Environmental Engineering

Answer 1

The correct choice is (d) All of the mentioned

To elaborate: Nitrogen dioxide destroys macrophages and injures lung’s defence mechanism thereby making us more vulnerable to air-borne pathogens.