ASCS Indoor Air Quality and Contaminants

Question 1

Which airborne contaminant is commonly found in HVAC systems and can cause respiratory issues?

Accepted Answer

Mold spores

Answer

Carbon dioxide

Answer

Ozone

Answer

Nitrogen gas

Question 2

What is the primary source of indoor air pollution in HVAC systems?

Accepted Answer

Dust and debris accumulation

Answer

Vehicle emissions

Answer

Outdoor ozone levels

Answer

Natural gas leaks

Question 3

Which gas is a common indoor air pollutant and is colorless, odorless, and dangerous at high levels?

Accepted Answer

Carbon monoxide

Answer

Oxygen

Answer

Nitrogen dioxide

Answer

Sulfur dioxide

Question 4

What is the role of an air filter in improving indoor air quality?

Accepted Answer

Trap airborne contaminants

Answer

Increase airflow

Answer

Reduce air humidity

Answer

Control temperature

Question 5

Which method is most effective in preventing microbial growth in HVAC systems?

Accepted Answer

Controlling moisture levels

Answer

Increasing airflow

Answer

Using air fresheners

Answer

Sealing air ducts

Question 6

Which type of HVAC cleaning helps remove bacteria and mold from air ducts?

Accepted Answer

Antimicrobial treatment

Answer

Vacuum cleaning

Answer

Duct sealing

Answer

Increasing ventilation