Week 3 - Chapter 18: Foam Fire Fighting Liquid Fires and
Gas Fires Questions With Complete Solutions
21. An advantage of __ is that they are widely available on most
fire apparatus. (880) [5.3.1]
A. fog nozzles
B. foam nozzles
C. apparatus-mounted proportioners
D. compressed air foam systems (CAFS)
A. fog nozzles
34. Any valve operation must be performed in coordination
with: (885)[5.3.3]
A. ventilation efforts.
B. salvage and overhaul.
C. facility personnel supervision.
D. a hazardous materials team leader.
C. facility personnel supervision.
1. Which extinguishment method involves foam creating a
barrier between the fuel gases and any possible ignition sources?
,(871)
[5.3.1]
A. Cooling
B. Separating
C. Smothering
D. Penetrating
B. Separating
1. When fire fighting foam extinguishes by _ _, it prevents air
from reaching the fuel and prevents release of flammable
vapors. (871)
A. cooling
B. separating
C. smothering
D. penetrating
C. smothering
11. Which statement describes the valve control on pressurized
vessels?(885)
A. Closing the valve without understanding the system can be
very dangerous.
B. Butterfly valves have a sign marking whether they are open
or closed, but PIVs do not.
C. Closing the valve is never a safe option when trying to
contain a leak in a pressurized vessel.
, D. Pumping systems are required to be marked so that
firefighters can easily judge the safety of closing the valve.
A. Closing the valve without understanding the system can be
very dangerous.
2. Class B foams are especially effective on: (872) [5.3.1]
A. surfactants.
B. hydrocarbon fuels.
C. ordinary combustibles.
D. energized electrical equipment.
B. hydrocarbon fuels.
3. In order to create high-quality foam: (872) [5.3.1]
A. a fog nozzle must be used.
B. a foam nozzle must be used.
C. foam concentrate, water, and air must be mixed in the correct
ratio.
D. foam solution and water must be premixed and allowed to
rest before application.
C. foam concentrate, water, and air must be mixed in the correct
ratio.
4. High-quality foam bubbles are created through the process of:
(872)[5.3.1]
A. aeration.
Gas Fires Questions With Complete Solutions
21. An advantage of __ is that they are widely available on most
fire apparatus. (880) [5.3.1]
A. fog nozzles
B. foam nozzles
C. apparatus-mounted proportioners
D. compressed air foam systems (CAFS)
A. fog nozzles
34. Any valve operation must be performed in coordination
with: (885)[5.3.3]
A. ventilation efforts.
B. salvage and overhaul.
C. facility personnel supervision.
D. a hazardous materials team leader.
C. facility personnel supervision.
1. Which extinguishment method involves foam creating a
barrier between the fuel gases and any possible ignition sources?
,(871)
[5.3.1]
A. Cooling
B. Separating
C. Smothering
D. Penetrating
B. Separating
1. When fire fighting foam extinguishes by _ _, it prevents air
from reaching the fuel and prevents release of flammable
vapors. (871)
A. cooling
B. separating
C. smothering
D. penetrating
C. smothering
11. Which statement describes the valve control on pressurized
vessels?(885)
A. Closing the valve without understanding the system can be
very dangerous.
B. Butterfly valves have a sign marking whether they are open
or closed, but PIVs do not.
C. Closing the valve is never a safe option when trying to
contain a leak in a pressurized vessel.
, D. Pumping systems are required to be marked so that
firefighters can easily judge the safety of closing the valve.
A. Closing the valve without understanding the system can be
very dangerous.
2. Class B foams are especially effective on: (872) [5.3.1]
A. surfactants.
B. hydrocarbon fuels.
C. ordinary combustibles.
D. energized electrical equipment.
B. hydrocarbon fuels.
3. In order to create high-quality foam: (872) [5.3.1]
A. a fog nozzle must be used.
B. a foam nozzle must be used.
C. foam concentrate, water, and air must be mixed in the correct
ratio.
D. foam solution and water must be premixed and allowed to
rest before application.
C. foam concentrate, water, and air must be mixed in the correct
ratio.
4. High-quality foam bubbles are created through the process of:
(872)[5.3.1]
A. aeration.
