Firefighter 1&2 and Hazmat Operations Practice Test
#4
__________ nozzle is used with a foam solution to produce a low-expansion,short-lasting foam.
1) An adjustable fog
2) A mechanical blower
3) A solid-bore
4) A water-aspirating foam - ANS-An adjustable fog
A distress call for help and an indication that you or a firefighter you are with is in grave danger
is a:
1) Emergency traffic.
2) Mayday.
3) Help.
4) Need assistance. - ANS-Mayday.
A feature in using the non-integrated PASS devices is:
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. - ANS-firefighters must activate it manually.
A hazard to a firefighter standing in a pool of a flammable liquid or contaminated runoff is the:
1) personal protective equipment can absorb the product and endanger the firefighter.
2) product can break down the rubber in the firefighter's boots.
3) runoff is pressure sensitive and can ignite.
4) toxicity of foam. - ANS-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:
1) establishing a water supply.
2) having enough firefighters on scene to set up foam lines.
3) identifying the product that is on fire to determine the correct foam to use.
4) calling for mutual aid to ensure adequate on scene staffing. - ANS-identifying the product that
is on fire to determine the correct foam to use.
Air aspirating foam nozzles:
1) are recommended for use with protein and fluoroprotein foams.
2) have greater reach than a standard fog nozzle.
3) are the most effective appliance for high expansion foam.
, 4) cannot be used with Class A foam. - ANS-are recommended for use with protein and
fluoroprotein foams.
Allowing the fire to burn itself out is an appropriate strategy for:
1) wood and natural fiber.
2) pesticides or flammable liquids.
3) fires involving plastics.
4) fires in stacked materials. - ANS-pesticides or flammable liquids.
An advantage of Class A foam is that it:
1) is designed to resist hydrocarbons.
2) is designed to self-seal on a liquid surface.
3) allows water to penetrate dense materials instead of running off the surface.
4) can be used on both Class A and Class B fires, in varying proportions. - ANS-allows water to
penetrate dense materials instead of running off the surface.
Aqueous Film Forming Foam can be utilized on hydrocarbon fires at __________ percent
proportions.
1) two to eight
2) one to six
3) four to ten
4) three to nine - ANS-one to six
Aqueous Film Forming Foam is used in ___________ percent concentrations.
1) 0.1 and 0.5
2) 3 and 6
3) 9, 10, and 12
4) 10, 12, and 15 - ANS-3 and 6
At flammable liquid spills such as propane, fire apparatus should be positioned:
1) downhill and downwind.
2) downhill and upwind.
3) uphill and downwind.
4) uphill and upwind. - ANS-uphill and upwind.
Class A foams are essentially wetting agents that __________ of water.
1) increase the viscosity
2) increase the resistance
3) reduce the surface tension
4) create a higher vaporization point - ANS-reduce the surface tension
Class A foams are used at __________ percent.
1) 0.1 - 1
2) 1 - 1.5
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller AnswersCOM. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
