HIC Air Quality Assessment 3

Question 1

A grease trap that is not cleaned regularly can contribute to indoor air quality problems primarily through:

Accepted Answer

Emission of hydrogen sulfide and methane

Answer

Decomposing grease in traps produces hydrogen sulfide and methane gases, which are toxic and can create hazardous indoor air conditions.

Question 2

When assessing ventilation in a commercial kitchen, inspectors primarily look for which Air Changes per Hour (ACH) standard?

Accepted Answer

15–30 ACH

Answer

Commercial kitchens typically require 15–30 air changes per hour to effectively remove heat, smoke, grease, and odors.

Question 3

Which pollutant is produced when gas burners in a commercial kitchen operate with insufficient combustion air?

Accepted Answer

Carbon monoxide

Answer

Incomplete combustion of natural gas due to insufficient oxygen produces carbon monoxide, a colorless, odorless toxic gas.

Question 4

A negative pressure environment in a food facility is MOST likely to cause:

Accepted Answer

Infiltration of unfiltered outdoor air through gaps

Answer

Negative pressure draws unconditioned, unfiltered outdoor air through cracks and gaps, potentially introducing contaminants and pests.

Question 5

In indoor air quality investigations, a Draeger tube (colorimetric detector tube) is used to:

Accepted Answer

Detect and roughly quantify specific gas concentrations

Answer

Draeger tubes contain chemical reagents that change color in proportion to the concentration of a targeted gas when air is drawn through.

(HIC) Health Inspector Certification Practice Test