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Firefighter 1&2 and Hazmat Operations Practice exam .100% GUARANTEED PASS .QUESTIONS WITH, Exams of Safety and Fire Engineering

Nova Southeastern University (NSU)Safety and Fire Engineering

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

Typology: Exams

2024/2025

Available from 03/17/2025

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Firefighter 1&2 and Hazmat Operations
Practice exam .100% GUARANTEED
PASS .QUESTIONS WITH COMPLETE
SOLUTIONS.100% GRADED
A+,LATEST UPDATE 2025
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
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Download Firefighter 1&2 and Hazmat Operations Practice exam .100% GUARANTEED PASS .QUESTIONS WITH and more Exams Safety and Fire Engineering in PDF only on Docsity!

Firefighter 1&2 and Hazmat Operations

Practice exam .100% GUARANTEED

PASS .QUESTIONS WITH COMPLETE

SOLUTIONS.100% GRADED

A+,LATEST UPDATE 2025

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
  1. The bankdown, bankback or bankshot technique - ✔✔✔The rain- down technique What topic is covered by National Fire Protection Association Standard 1500?
  2. Salvage operations
  3. Safety programs
  4. Electrical safety requirements
  5. Budgeting requirements - ✔✔✔Safety programs Which is a hydrocarbon?
  6. Ketone
  7. Kerosene
  8. Alcohol
  9. Acetone - ✔✔✔Kerosene Once the valve on a container of flammable gases has been shut off, the hose crew should:
  10. shut off the nozzles and exit the area.
  11. continue to apply water as they exit the area.
  12. continue to apply water and wash down the area.
  13. shut off the water and monitor the area. - ✔✔✔continue to apply water as they exit the area.
  1. firefighters must activate it manually.
  2. neglecting to attach antennae to homing unit.
  3. the device is too technical for most firefighters.
  4. the device is over-pressurized. - ✔✔✔firefighters must activate it manually. Air aspirating foam nozzles:
  5. are recommended for use with protein and fluoroprotein foams.
  6. have greater reach than a standard fog nozzle.
  7. are the most effective appliance for high expansion foam.
  8. cannot be used with Class A foam. - ✔✔✔are recommended for use with protein and fluoroprotein foams. A distress call for help and an indication that you or a firefighter you are with is in grave danger is a:
  9. Emergency traffic.
  10. Mayday.
  11. Help.
  12. Need assistance. - ✔✔✔Mayday. Some self-contained breathing apparatus cylinders for fire service use are made out of:
  13. aluminum.
  14. stainless steel.
  15. titanium.
  1. plastic composite. - ✔✔✔aluminum. The firefighter making the mayday call should describe the situation, location, and:
  2. time of day.
  3. GPS coordinates.
  4. help needed.
  5. accountability tag number. - ✔✔✔help needed. Petroleum-based fuels are __________ and float on water.
  6. inorganic
  7. hydrocarbons
  8. polar solvents
  9. polymers - ✔✔✔hydrocarbons A hazard to a firefighter standing in a pool of a flammable liquid or contaminated runoff is the:
  10. personal protective equipment can absorb the product and endanger the firefighter.
  11. product can break down the rubber in the firefighter's boots.
  12. runoff is pressure sensitive and can ignite.
  13. toxicity of foam. - ✔✔✔personal protective equipment can absorb the product and endanger the firefighter.
  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?
  1. Alcohol
  2. Diesel fuel
  3. Kerosene
  4. Jet fuel - ✔✔✔Alcohol Class A foams are essentially wetting agents that __________ of water.
  5. increase the viscosity
  6. increase the resistance
  7. reduce the surface tension
  8. create a higher vaporization point - ✔✔✔reduce the surface tension For application of aqueous film-forming foam, eductors or proportioners operate on __________ principle.
  9. a static pressure
  10. a venturi
  1. an induction
  2. a positive pressure - ✔✔✔a venturi An advantage of Class A foam is that it:
  3. is designed to resist hydrocarbons.
  4. is designed to self-seal on a liquid surface.
  5. allows water to penetrate dense materials instead of running off the surface.
  6. 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. Which is a polar solvent?
  7. Ketone
  8. Diesel fuel
  9. Kerosene
  10. Gasoline - ✔✔✔Ketone The pump pressure for an in-line eductor for a foam stream is:
  11. 100 psi.
  12. 150 psi.
  13. 200 psi.
  14. 250 psi. - ✔✔✔200 psi.
  1. separates the fuel from the fire.
  2. 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:
  3. proportioning
  4. aeration
  5. mixing
  6. blending - ✔✔✔aeration Which foam application technique requires the stream to be broken to prevent splashing?
  7. Sweep
  8. Rain-down technique
  9. Roll-on
  10. Bankshot technique - ✔✔✔Rain-down technique The most effective method of controlling flammable liquid fires is:
  11. the use of foam.
  12. the use of large amounts of water.
  13. the use of unmanned nozzles.
  14. letting the fire burn undisturbed. - ✔✔✔the use of foam.

To produce the proper rate of foam on flammable liquids fire __________ is necessary.

  1. a high-volume pump
  2. a proportioner
  3. a fog nozzle
  4. an aspirating tip - ✔✔✔a proportioner Unburned flammable liquid vapors such as propane are usually __________ than air and __________.
  5. heavier, will form pools in low areas
  6. lighter, will dissipate into the air
  7. less combustible, will not ignite
  8. 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?
  9. Balanced pressure proportioner
  10. In-line eductor
  11. Around-the-pump proportioner
  12. 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.

Regarding the application of firefighting foam, the major difference between hydrocarbon and polar solvent fuels is:

  1. hydrocarbons are miscible.
  2. polar solvents float on water.
  3. polar solvents are water soluble.
  4. hydrocarbons are water soluble. - ✔✔✔polar solvents are water soluble. Which method of foam application is the most effective way to attack large petroleum tank fires?
  5. Snowstorm
  6. Bank-down
  7. Roll-on
  8. Rain-Down - ✔✔✔Rain-Down Which is an advantage of Class A foams?
  9. They have the longest drain time.
  10. They increase surface tension.
  11. They can penetrate dense material.
  12. They can be used on Class A and B fires. - ✔✔✔They can penetrate dense material.

The method of foam application occurring when a firefighter deflects the foam stream off a wall and the foam blanket flows down the wall and back over the fire is the:

  1. sweep method.
  2. flow back method.
  3. bankdown method.
  4. rain down method. - ✔✔✔bankdown method. What could happen if you mix different types of foam concentrate together while fighting a Class B fire?
  5. The dominant foam will suppress the lesser foam that is mixed.
  6. The mixed foams could congeal and plug the foam system.
  7. Nothing will happen as long as the foams are the same brand.
  8. 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:
  9. downhill and downwind.
  10. downhill and upwind.
  11. uphill and downwind.
  12. uphill and upwind. - ✔✔✔uphill and upwind. Aqueous Film Forming Foam is used in ___________ percent concentrations.

blanket on top of the liquid.Statement 3: Unignited spills require the same foam application rates as ignited spills.

  1. Statement 1 is true; statements 2 and 3 are false.
  2. Statements 1 and 2 are true; statement 3 is false.
  3. Statements 1 and 2 are false; statement 3 is true.
  4. 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:
  5. cooling the vapor space of tanks.
  6. most useful for exposure protection.
  7. displacing fuel from pipes.
  8. 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:
  9. control all ignition sources.
  10. place attack lines near the apparatus for protection.
  11. contact the hazardous materials team on call.
  12. 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.

  1. within 10 percent greater than
  2. only at
  3. plus or minus 5 percent of
  4. within plus or minus 2 percent of - ✔✔✔only at Which is a method for proportioning foam?
  5. Infusion
  6. Batch-mixing.
  7. Ingestion
  8. Incomplete injection. - ✔✔✔Batch-mixing. Class A foams are used at __________ percent.
  9. 0.1 - 1
  10. 1 - 1.
  11. 1.5 - 2
  12. 2 - 3 - ✔✔✔0.1 - 1 Solid bore or solid tip nozzles can be effectively used for foam application with:
  13. Aqueous Film Forming Foam.
  14. Protein Foam.