FREE NEHA Air Quality Questions and Answers

Question 1

What is the primary source of ground-level ozone, a major component of smog?

Accepted Answer

Motor vehicle exhaust

Answer

Industrial emissions

Answer

Agricultural activities

Answer

Natural sources like volcanoes

Question 2

Which of the following is a common indoor air pollutant that can cause respiratory issues?

Accepted Answer

Carbon monoxide

Answer

Ozone

Answer

Sulfur dioxide

Answer

Nitrogen dioxide

Question 3

What does the AQI (Air Quality Index) measure?

Accepted Answer

The concentration of various pollutants in the air

Answer

The amount of carbon dioxide in the air

Answer

The temperature of the atmosphere

Answer

The presence of radioactive materials

Question 4

Which particulate matter (PM) size is most harmful to human health because it can penetrate deep into the lungs?

Accepted Answer

PM2.5

Answer

PM10

Answer

PM1

Answer

PM50

Question 5

Which gas is primarily responsible for acid rain formation?

Accepted Answer

Sulfur dioxide

Answer

Methane

Answer

Carbon dioxide

Answer

Nitrogen oxide