Chapter 8 - Extinguishers

Front 1

All fire extinguishers are classified according to the classes of fires on which they are _____.

Back 1

Effective

Front 2

Combustion begins when a fuel is heated to its _____.

Back 2

ignition point

Front 3

Which class of fire is depicted in the pictograph system by a flame and an electrical plug and socket?

Back 3

C (electrical)

Front 4

Which class of fire involves combustible metals?

Back 4

Class D

Front 5

Which class of fire is depicted in the pictograph system by a flame and gasoline can?

Back 5

B

Front 6

What is the most commonly used extinguishing agent for Class A fires?

Back 6

Water

Front 7

Which statement best summarizes when a dry chemical extinguisher should be serviced and recharged?

Back 7

After any discharge

Front 8

A Class B foam extinguisher is not rated for which fuel?

Back 8

Cooking oil

Front 9

Which extinguishing method is being used when a foam blanket is placed over the surface of a burning liquid?

Back 9

Cutting off the oxygen supply

Front 10

The hydrostatic test interval for a dry chemical extinguisher with a stainless steel shell is every ____ years.

Back 10

5

Front 11

The weight of carbon dioxide is about one and _______ the weight of air.

Back 11

one half

Front 12

What is an advantage of portable fire extinguishers over hose lines?

Back 12

Faster Deployment

Front 13

What residue does a CO2 fire extinguisher leave when discharged?

Back 13

none

Front 14

When approaching a fire with an extinguisher in hand, you should always have a(n)_____.

Back 14

exit route

Front 15

What is the term for a water-soluble flammable liquid?

Back 15

Polar solvent

Front 16

Which statement about foam fire extinguishers is correct? "Class B foam extinguishers may be used to some effect on Class ___ fires."

Back 16

A

Front 17

Which statement about the numerical rating of a Class K extinguisher is correct?

Back 17

There is no numerical rating for a Class K extinguisher.

Front 18

In general, the maximum reach of a CO2 extinguisher is ____ feet.

Back 18

8

Front 19

A portable fire extinguisher is bested suited for which situation?

Back 19

Fire in a wastebasket

Front 20

The “P” in the acronym PASS, used in reference to fire extinguisher operation, stands for _____.

Back 20

Pull

Front 21

What does it mean when a fire extinguisher has a pictograph with a red slash through it?

Back 21

Use on that class of fire could be hazardous

Front 22

Which feature of some carbon dioxide extinguishers makes them dangerous for use on Class C fires?

Back 22

metal horn

Front 23

What is the best way to extinguish a Class C fire? "Shut off the power and treat is a Class __ and Class ___."

Back 23

Class A and Class B

Front 24

What is the term for the substance that puts out the fire?

Back 24

Dry Charge

Front 25

A Class A fire extinguisher with a numerical rating of 2 contains ___ gallons of water.

Back 25

2.5 gallons