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Firefighter 1&2 and Hazmat Operations Practice Test.questions with complete solutions.100%, Exams of Safety and Fire Engineering

Nova Southeastern University (NSU)Safety and Fire Engineering

The maximum length of hose that can be used in the discharge side of an in-line eductor is: 1) 300 feet. 2) 250 feet. 3) 200 feet. 4) 150 feet. - ✔✔✔150 feet. Which action is appropriate with respect to foam safety? 1) Use a solid bore nozzle for Class B fires. 2) Direct foam streams into the spill or f

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Firefighter 1&2 and Hazmat Operations
Practice Test.questions with complete
solutions.100% guaranteed pass latest
update 2025
The maximum length of hose that can be used in the discharge side of an in-line eductor is:
1) 300 feet.
2) 250 feet.
3) 200 feet.
4) 150 feet. - ✔✔✔150 feet.
Which action is appropriate with respect to foam safety?
1) Use a solid bore nozzle for Class B fires.
2) Direct foam streams into the spill or fire.
3) Always retreat facing the fire.
4) Foam should not be pushed onto a spill. - ✔✔✔Always retreat facing the fire.
Which foam application technique is used when the others are not feasible?
1) The sweep, roll-on or bank-in technique
2) The rain-down technique
3) The sub-surface injection technique
4) The bankdown, bankback or bankshot technique - ✔✔✔The rain-down technique
What topic is covered by National Fire Protection Association Standard 1500?
1) Salvage operations
2) Safety programs
3) Electrical safety requirements
4) Budgeting requirements - ✔✔✔Safety programs
Which is a hydrocarbon?
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Download Firefighter 1&2 and Hazmat Operations Practice Test.questions with complete solutions.100% and more Exams Safety and Fire Engineering in PDF only on Docsity!

Firefighter 1&2 and Hazmat Operations

Practice Test.questions with complete

solutions.100% guaranteed pass latest

update 2025

The maximum length of hose that can be used in the discharge side of an in-line eductor is:

  1. 300 feet.
  2. 250 feet.
  3. 200 feet.
  4. 150 feet. - ✔✔✔150 feet. Which action is appropriate with respect to foam safety?
  5. Use a solid bore nozzle for Class B fires.
  6. Direct foam streams into the spill or fire.
  7. Always retreat facing the fire.
  8. Foam should not be pushed onto a spill. - ✔✔✔Always retreat facing the fire. Which foam application technique is used when the others are not feasible?
  9. The sweep, roll-on or bank-in technique
  10. The rain-down technique
  11. The sub-surface injection technique
  12. The bankdown, bankback or bankshot technique - ✔✔✔The rain-down technique What topic is covered by National Fire Protection Association Standard 1500?
  13. Salvage operations
  14. Safety programs
  15. Electrical safety requirements
  16. Budgeting requirements - ✔✔✔Safety programs Which is a hydrocarbon?
  1. Ketone
  2. Kerosene
  3. Alcohol
  4. Acetone - ✔✔✔Kerosene Once the valve on a container of flammable gases has been shut off, the hose crew should:
  5. shut off the nozzles and exit the area.
  6. continue to apply water as they exit the area.
  7. continue to apply water and wash down the area.
  8. shut off the water and monitor the area. - ✔✔✔continue to apply water as they exit the area. When making foam, in order for the nozzle and eductor to work properly:
  9. both should come from the same manufacturer.
  10. the nozzle must have a lower flow rating than the eductor.
  11. the nozzle must have a higher flow rating than the eductor.
  12. both should have the same flow rating. - ✔✔✔both should have the same flow rating. The type of foam is made from animal by-products and used on Class B hydrocarbon fires is:
  13. aqueous film-forming foam.
  14. protein foams.
  15. synthetic protein foam.
  16. purple K foam. - ✔✔✔protein foams. Which statement is correct regarding foam?
  17. Protein foam is the universal foam.
  18. AFFF is a protein based foam and is excellent for vapor suppression.
  19. Firefighters must use the proper foam for the situation encountered.
  20. Class A and Class B foams can be mixed for wildland fires. - ✔✔✔Firefighters must use the proper foam for the situation encountered. A feature in using the non-integrated PASS devices is:
  1. inorganic
  2. hydrocarbons
  3. polar solvents
  4. polymers - ✔✔✔hydrocarbons A hazard to a firefighter standing in a pool of a flammable liquid or contaminated runoff is the:
  5. personal protective equipment can absorb the product and endanger the firefighter.
  6. product can break down the rubber in the firefighter's boots.
  7. runoff is pressure sensitive and can ignite.
  8. toxicity of foam. - ✔✔✔personal protective equipment can absorb the product and endanger the firefighter. A high priority during a flammable-liquids fire involving a rolled over tanker is:
  9. establishing a water supply.
  10. having enough firefighters on scene to set up foam lines.
  11. identifying the product that is on fire to determine the correct foam to use.
  12. calling for mutual aid to ensure adequate on scene staffing. - ✔✔✔identifying the product that is on fire to determine the correct foam to use. Foams in use currently are of the mechanical type and must be __________ and __________ before they can be used.
  13. proportioned, blended
  14. stirred, aerated
  15. mixed, proportioned
  16. proportioned, aerated - ✔✔✔proportioned, aerated On what class of fire are compressed air foam systems most effective?
  17. Class A
  18. Class B
  19. Class C
  20. Class D - ✔✔✔Class A

What is the most effective method for extinguishing a three-dimensional flammable-liquid fire?

  1. A mixture of Class A and Class B foams
  2. Use of a Compressed Air Foam system
  3. Class B foam applied upstream of the dripping liquid
  4. Dry chemical or gaseous extinguishing agents combined with foam - ✔✔✔Dry chemical or gaseous extinguishing agents combined with foam Which is a polar solvent?
  5. Alcohol
  6. Diesel fuel
  7. Kerosene
  8. Jet fuel - ✔✔✔Alcohol Class A foams are essentially wetting agents that __________ of water.
  9. increase the viscosity
  10. increase the resistance
  11. reduce the surface tension
  12. create a higher vaporization point - ✔✔✔reduce the surface tension For application of aqueous film-forming foam, eductors or proportioners operate on __________ principle.
  13. a static pressure
  14. a venturi
  15. an induction
  16. a positive pressure - ✔✔✔a venturi An advantage of Class A foam is that it:
  17. is designed to resist hydrocarbons.
  18. is designed to self-seal on a liquid surface.
  19. allows water to penetrate dense materials instead of running off the surface.
  20. can be used on both Class A and Class B fires, in varying proportions. - ✔✔✔allows water to penetrate dense materials instead of running off the surface.
  1. three to nine - ✔✔✔one to six Foam usually stops a flammable-liquids fire because the foam:
  2. extinguishes the fire.
  3. dilutes the liquid fuel and breaks the fuel down.
  4. separates the fuel from the fire.
  5. reduces the ignition temperature of the vapors. - ✔✔✔separates the fuel from the fire. Production of an adequate amount of bubbles to form an effective foam blanket is:
  6. proportioning
  7. aeration
  8. mixing
  9. blending - ✔✔✔aeration Which foam application technique requires the stream to be broken to prevent splashing?
  10. Sweep
  11. Rain-down technique
  12. Roll-on
  13. Bankshot technique - ✔✔✔Rain-down technique The most effective method of controlling flammable liquid fires is:
  14. the use of foam.
  15. the use of large amounts of water.
  16. the use of unmanned nozzles.
  17. letting the fire burn undisturbed. - ✔✔✔the use of foam. To produce the proper rate of foam on flammable liquids fire __________ is necessary.
  18. a high-volume pump
  19. a proportioner
  20. a fog nozzle
  21. an aspirating tip - ✔✔✔a proportioner

Unburned flammable liquid vapors such as propane are usually __________ than air and __________.

  1. heavier, will form pools in low areas
  2. lighter, will dissipate into the air
  3. less combustible, will not ignite
  4. more combustible, will easily ignite - ✔✔✔heavier, will form pools in low areas Which is the most common type of foam proportioner used in the fire service?
  5. Balanced pressure proportioner
  6. In-line eductor
  7. Around-the-pump proportioner
  8. Automatic eductor - ✔✔✔In-line eductor When using a Compressed Air Foam system to protect the exterior of structures in the urban- interface, an effective method is to use Class ________ foam and apply it as a ____________ foam.
  9. B; wet
  10. B; dry
  11. A; wet
  12. A; dry - ✔✔✔A; dry Which is a method by which foam acts as a suppression agent?
  13. Smothering
  14. Floating
  15. Increasing the chemical chain reaction
  16. Dissolving - ✔✔✔Smothering In practicing proper air management techniques, the firefighter should make a conscious decision to stay or leave when air is down to __________ liters.
  17. 200
  18. 300
  19. 400
  1. bankdown method.
  2. rain down method. - ✔✔✔bankdown method. What could happen if you mix different types of foam concentrate together while fighting a Class B fire?
  3. The dominant foam will suppress the lesser foam that is mixed.
  4. The mixed foams could congeal and plug the foam system.
  5. Nothing will happen as long as the foams are the same brand.
  6. Operators would need to flow water at a higher rate to overcome possible friction. - ✔✔✔The mixed foams could congeal and plug the foam system. At flammable liquid spills such as propane, fire apparatus should be positioned:
  7. downhill and downwind.
  8. downhill and upwind.
  9. uphill and downwind.
  10. uphill and upwind. - ✔✔✔uphill and upwind. Aqueous Film Forming Foam is used in ___________ percent concentrations.
  11. 0.1 and 0.
  12. 3 and 6
  13. 9, 10, and 12
  14. 10, 12, and 15 - ✔✔✔3 and 6 When filling a self-contained breathing apparatus cylinder, the cylinder must be:
  15. placed in a fragmentation containment or other shielded device.
  16. placed in water.
  17. filled in the open to allow for checking of signs of weakness in the cylinder.
  18. wrapped in a blanket or towel. - ✔✔✔placed in a fragmentation containment or other shielded device. The process of mixing foam into the water tank of a pumper to produce the foam solution is:
  19. direct proportioning.
  1. batch mixing.
  2. premixing.
  3. prime mixing. - ✔✔✔batch mixing. Directions: Read the following statements regarding class B foam application and select the correct answer from choices A through D.Statement 1: An important variable in effective rate of application is the type of foam concentrate used.Statement 2: The rate of foam application must be high enough to cover the surface and maintain a blanket on top of the liquid.Statement 3: Unignited spills require the same foam application rates as ignited spills.
  4. Statement 1 is true; statements 2 and 3 are false.
  5. Statements 1 and 2 are true; statement 3 is false.
  6. Statements 1 and 2 are false; statement 3 is true.
  7. All three statements are true. - ✔✔✔Statements 1 and 2 are true; statement 3 is false. Regarding the use of water on class B fires, the term mechanical tool refers to:
  8. cooling the vapor space of tanks.
  9. most useful for exposure protection.
  10. displacing fuel from pipes.
  11. moving flammable products to another area. - ✔✔✔moving flammable products to another area. One of the most important problems that must be addressed during a flammable liquids incident is to:
  12. control all ignition sources.
  13. place attack lines near the apparatus for protection.
  14. contact the hazardous materials team on call.
  15. establish the staging area near the command post. - ✔✔✔control all ignition sources. To ensure maximum effectiveness, use foam concentrates __________ the specific percentage for which they are intended to be proportioned.
  16. within 10 percent greater than
  17. only at
  18. plus or minus 5 percent of
  19. within plus or minus 2 percent of - ✔✔✔only at