IICRC COMPREHENSIVE EXAMINATION
TEST 2026 PRACTICE QUESTIONS AND
ACCURATE ANSWERS GRADED A+
◉ In the restorative drying industry the weight measurement used
to measure water vapor in air is grains per pound of air, abbreviated
as GPP. This is called. Answer: humidity ratio
◉ which of these surface temperatures would prompt the most
rapid evaporations?
60 degrees
70 degrees
80 degrees. Answer: 80
◉ if a material is not drying well what would be the most effective
method of increasing evaporation?. Answer: warm the material
◉ one of the most effective methods of drying wet wood under hard
surfaces is. Answer: heated airflow.
◉ Use of Psychometrics chart to complete the following calculation
, 80 F at 60% RH
53 F at 80% RH. Answer: 91 GPP
48 GPP
* which of the two conditions has the lowest vapor pressure?
53 F at 80% RH = 48 GPP
*what is the surface temperature at which condensation would
become a risk for air which is 80 F at 60%
102 F (dew point)
◉ what is the temperature in degrees F if the humidity ratio is 70
GPP and the relative humidity is 60%. Answer: 72 F
◉ ____ is the temperature at which air becomes saturated with
moisture and can hold no more water vapor. Answer: dew point
◉ when air is cooled its capacity for water vapor is reduced,
eventually If temperature is cooled enough, the relative humidity
will reach ____% or saturation. when this occurs the air has reached
its ___ point temperature.. Answer: 100%
dew point
TEST 2026 PRACTICE QUESTIONS AND
ACCURATE ANSWERS GRADED A+
◉ In the restorative drying industry the weight measurement used
to measure water vapor in air is grains per pound of air, abbreviated
as GPP. This is called. Answer: humidity ratio
◉ which of these surface temperatures would prompt the most
rapid evaporations?
60 degrees
70 degrees
80 degrees. Answer: 80
◉ if a material is not drying well what would be the most effective
method of increasing evaporation?. Answer: warm the material
◉ one of the most effective methods of drying wet wood under hard
surfaces is. Answer: heated airflow.
◉ Use of Psychometrics chart to complete the following calculation
, 80 F at 60% RH
53 F at 80% RH. Answer: 91 GPP
48 GPP
* which of the two conditions has the lowest vapor pressure?
53 F at 80% RH = 48 GPP
*what is the surface temperature at which condensation would
become a risk for air which is 80 F at 60%
102 F (dew point)
◉ what is the temperature in degrees F if the humidity ratio is 70
GPP and the relative humidity is 60%. Answer: 72 F
◉ ____ is the temperature at which air becomes saturated with
moisture and can hold no more water vapor. Answer: dew point
◉ when air is cooled its capacity for water vapor is reduced,
eventually If temperature is cooled enough, the relative humidity
will reach ____% or saturation. when this occurs the air has reached
its ___ point temperature.. Answer: 100%
dew point
