Fire Protection Systems Ch. 11

Which extinguishing agent is effective on Class B and C fires, but has limited use on Class A fires?

Carbon dioxide

Which fire extinguisher type has a pressurized cartridge that, when activated, releases the pressurized gas into the extinguishing agent tank, forcing it out of a nozzle or hose?

Cartridge pressure extinguisher

Which of the following classes of fire involves ordinary combustibles such as cloth, grain, paper, rubber, and wood?

Class A

Which classification of fire extinguishers involves energized electrical equipment?

Class C

How often should fire extinguishers have a visual inspection to ensure readiness and serviceability?

Every 30 days

Which of the following extinguishing agents forms a vapor barrier between the Class B fuel and the atmosphere, thus cooling and smothering the fire?

Foam

What is the National Fire Protection Association standard for portable fire extinguishers?

NFPA 10

Which type of fire extinguisher requires manual operation, creating the necessary pressure in the tank to expel the extinguishing agent?

Pump Extinguisher

Which of the following has both the pressurized expelling gas and the extinguishing agent mixed in the same tank, and uses gas to push the extinguishing agent out through a nozzle or hose when operated?

Stored pressure extinguishers

If an extinguisher is rated as 120-B, it means that a non-expert extinguisher operator should have enough product to extinguish a:

120-square-foot pan fire

Which of the following Class A fire extinguisher ratings is based on outdoor tests?

30-A

According to NFPA 10, water-based extinguishers should be hydrostatically tested every _____ years.

5

A Class A fire extinguisher rated as 4-A has the extinguishing capacity equal to _________ of water.

5 gallons

What is the second step of the operation of a fire extinguisher, as labeled on the side of the fire extinguisher in a pictograph format?

Aim the nozzle

Some of the classes of fire extinguishers have numbers in addition to their letter classification. Which of the following classes has a number before its letter?

Class B

Which of the following classes of fire involves cooking media that use combustible vegetable or animal oils and fats?

Class K

Which of the following extinguishing agents is made up of small solid particles propelled by a pressurized gas?

Dry Chemical

Which of the following extinguishing agents is effective on Class D fires and eliminates oxygen by forming a crust on the materials and depleting the available oxygen?

Dry powder

The purpose of a conductivity test is to make sure the Class C extinguishing agent and equipment are nonconductive so that the ______ is safe from shock potentials.

Extinguisher operator

Who is responsible for the inspection, testing, and maintenance of fire extinguishers to ensure that they will be in working order when needed?

The property owner

Which of the following extinguishing agents can absorb more heat per pound than just about any other extinguishing material?

Water

Which extinguishing agent is a mixture of agents that, when applied, reacts with the fat in the cooking medium and develops a soapy foam blanket?

Wet chemical