HVAC Study Guide (60 multiple
choice) questions with answers
Why is IAQ important?
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a) to provide a comfortable environment for occupants
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b) to provide enough oxygen for occupants
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c) to provide the right temperature for a productive environment for
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occupants
d) to provide sufficient airflow for occupants
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e) to provide a healthy environment for occupants - correct answer ✔e) to
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provide a healthy environment for occupants
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What is not considered a contaminate?
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a) Carbon Dioxide
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b) Ozone
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c) Carbon Monoxide
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d) Oxygen
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e) Radon - correct answer ✔d) Oxygen
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What gas is the best indicator for the quality of air in a building?
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a) Oxygen
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b) Carbon Dioxide
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c) Ozone
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,d) Carbon Monoxide
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e) Radon - correct answer ✔b) Carbon Dioxide
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What is not true statement about carcinogens?
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a) carcinogen exposure can cause irreversible health problems
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b) exposure to carcinogens might be unnoticeable
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c) the only source of carcinogens comes from environmental tobacco smoke
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(ETS)
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d) carcinogens are among the most significant contaminants
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e) the risk of cancer increases with level and time of exposure to
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carcinogens - correct answer ✔c) the only source of carcinogens comes
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
from environmental tobacco smoke (ETS)
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How can concentration of contaminants be calculated?
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a) by adding the source strength to the ventilation rate
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b) by dividing the source strength by the ventilation rate
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c) by subtracting the ventilation rate from the source strength
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d) by multiplying the source strength by 1000 ppm
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e) by dividing the source strength by the production rate - correct answer
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✔b) by dividing the source strength by the ventilation rate
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What is the recommended outdoor air ventilation rate per person for an
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
office space according to ASHRAE Standard 62-1989?
||| ||| ||| ||| ||| |||
a) 20 cfm
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b) 45 cfm
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c) 100 cfm
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, d) 300 cfm
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e) 1000 cfm - correct answer ✔a) 20 cfm
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What is not a primary way to affect air quality control?
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a) ventilation
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b) source control
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c) humidity control
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d) air cleaning
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e) use of outdoor air - correct answer ✔c) humidity control
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Which method is not part of source control?
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a) keep chemicals out of conditioned spaces
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b) eliminate mold spores in ducts
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c) use of exhaust hoods
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d) use of filters
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e) maintain a positive pressure gradient - correct answer ✔d) use of filters
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What is the incorrect statement?
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a) The Indoor Air Quality Procedure usually results in lower operation costs
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compared to the Ventilation Rate Procedure.
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b) The Ventilation Rate Procedure prescribes the rate at which outdoor air
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
must be delivered to all conditioned spaces.
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c) The Ventilation Rate Procedure is less expensive than the Indoor Air
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
Quality Procedure because outdoor is delivered directly to the building and
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
therefore the ventilation efficiency of each room does not have to be taken
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
into account.
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choice) questions with answers
Why is IAQ important?
||| ||| |||
a) to provide a comfortable environment for occupants
||| ||| ||| ||| ||| ||| |||
b) to provide enough oxygen for occupants
||| ||| ||| ||| ||| |||
c) to provide the right temperature for a productive environment for
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
occupants
d) to provide sufficient airflow for occupants
||| ||| ||| ||| ||| |||
e) to provide a healthy environment for occupants - correct answer ✔e) to
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
provide a healthy environment for occupants
||| ||| ||| ||| |||
What is not considered a contaminate?
||| ||| ||| ||| |||
a) Carbon Dioxide
||| |||
b) Ozone
|||
c) Carbon Monoxide
||| |||
d) Oxygen
|||
e) Radon - correct answer ✔d) Oxygen
||| ||| ||| ||| ||| |||
What gas is the best indicator for the quality of air in a building?
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
a) Oxygen
|||
b) Carbon Dioxide
||| |||
c) Ozone
|||
,d) Carbon Monoxide
||| |||
e) Radon - correct answer ✔b) Carbon Dioxide
||| ||| ||| ||| ||| ||| |||
What is not true statement about carcinogens?
||| ||| ||| ||| ||| |||
a) carcinogen exposure can cause irreversible health problems
||| ||| ||| ||| ||| ||| |||
b) exposure to carcinogens might be unnoticeable
||| ||| ||| ||| ||| ||| |||
c) the only source of carcinogens comes from environmental tobacco smoke
||| ||| ||| ||| ||| ||| ||| ||| ||| |||
(ETS)
||| |||
d) carcinogens are among the most significant contaminants
||| ||| ||| ||| ||| ||| ||| |||
e) the risk of cancer increases with level and time of exposure to
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
carcinogens - correct answer ✔c) the only source of carcinogens comes
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
from environmental tobacco smoke (ETS)
||| ||| ||| |||
How can concentration of contaminants be calculated?
||| ||| ||| ||| ||| |||
a) by adding the source strength to the ventilation rate
||| ||| ||| ||| ||| ||| ||| ||| |||
b) by dividing the source strength by the ventilation rate
||| ||| ||| ||| ||| ||| ||| ||| |||
c) by subtracting the ventilation rate from the source strength
||| ||| ||| ||| ||| ||| ||| ||| |||
d) by multiplying the source strength by 1000 ppm
||| ||| ||| ||| ||| ||| ||| |||
e) by dividing the source strength by the production rate - correct answer
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
✔b) by dividing the source strength by the ventilation rate
||| ||| ||| ||| ||| ||| ||| ||| |||
What is the recommended outdoor air ventilation rate per person for an
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
office space according to ASHRAE Standard 62-1989?
||| ||| ||| ||| ||| |||
a) 20 cfm
||| |||
b) 45 cfm
||| |||
c) 100 cfm
||| |||
, d) 300 cfm
||| |||
e) 1000 cfm - correct answer ✔a) 20 cfm
||| ||| ||| ||| ||| ||| ||| |||
What is not a primary way to affect air quality control?
||| ||| ||| ||| ||| ||| ||| ||| ||| |||
a) ventilation
|||
b) source control
||| |||
c) humidity control
||| |||
d) air cleaning
||| |||
e) use of outdoor air - correct answer ✔c) humidity control
||| ||| ||| ||| ||| ||| ||| ||| ||| |||
Which method is not part of source control?
||| ||| ||| ||| ||| ||| |||
a) keep chemicals out of conditioned spaces
||| ||| ||| ||| ||| |||
b) eliminate mold spores in ducts
||| ||| ||| ||| |||
c) use of exhaust hoods
||| ||| ||| |||
d) use of filters
||| ||| |||
e) maintain a positive pressure gradient - correct answer ✔d) use of filters
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
What is the incorrect statement?
||| ||| ||| |||
a) The Indoor Air Quality Procedure usually results in lower operation costs
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
compared to the Ventilation Rate Procedure.
||| ||| ||| ||| ||| |||
b) The Ventilation Rate Procedure prescribes the rate at which outdoor air
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
must be delivered to all conditioned spaces.
||| ||| ||| ||| ||| |||
c) The Ventilation Rate Procedure is less expensive than the Indoor Air
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
Quality Procedure because outdoor is delivered directly to the building and
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
therefore the ventilation efficiency of each room does not have to be taken
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
into account.
||| ||| |||
