AQS AQS Indoor Air Quality

Question 1

Which indoor air pollutant is classified as the second leading cause of lung cancer in the United States?

Accepted Answer

Radon

Answer

Radon, a naturally occurring radioactive gas that seeps from soil and rock, is the second leading cause of lung cancer in the US after cigarette smoking.

Question 2

The EPA's action level for radon in indoor air is:

Accepted Answer

4 pCi/L

Answer

The EPA recommends mitigating radon when indoor concentrations reach or exceed 4 picocuries per liter (pCi/L) of air.

Question 3

What is the primary health concern associated with indoor carbon monoxide (CO) exposure?

Accepted Answer

Carboxyhemoglobin formation preventing oxygen transport

Answer

CO binds to hemoglobin with ~250x greater affinity than oxygen, forming carboxyhemoglobin and reducing blood's oxygen-carrying capacity, causing hypoxia and potentially death.

Question 4

ASHRAE Standard 62.1 primarily governs:

Accepted Answer

Ventilation rates for acceptable indoor air quality in commercial buildings

Answer

ASHRAE 62.1 specifies minimum ventilation rates and indoor air quality requirements for commercial, institutional, and high-rise residential buildings.

Question 5

Sick Building Syndrome (SBS) differs from Building-Related Illness (BRI) in that:

Accepted Answer

SBS symptoms cannot be attributed to a specific identifiable cause, while BRI has a diagnosable cause

Answer

SBS describes nonspecific symptoms (headache, irritation) that improve upon leaving the building without an identifiable cause, whereas BRI involves clinically diagnosed illness linked to a specific indoor exposure.

(AQS) Air Quality Specialist Certification Practice Test

(AQS) Air Quality Specialist Certification Practice Test

AQS AQS Indoor Air Quality