Fire Extinguishers

Question 1

If a private residence has a single fire extinguisher, where should it be located?

Answer 1

Kitchen

Question 2

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

Answer 2

Faster deployment

Question 3

Which class of fire includes cloth?

Answer 3

A

Question 4

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

Answer 4

Water

Question 5

Which extinguishing agent is suitable for use on a Class C fire?

Answer 5

Carbon Dioxide

Question 6

The traditional symbol for a Class D fire extinguisher is a(n)

Answer 6

Yellow Star

Question 7

Which class of fire extinguisher includes a number in its classification?

Answer 7

A

Question 8

A Class C extinguisher is rated for use on ___.

Answer 8

energized electrical equipment

Question 9

Which statement about the numerical rating of a Class K extinguisher is correct?
A) There is no numerical rating for a Class K extinguisher
B) The numerical rating indicates the relative extinguishing power of the agent
C) The numerical rating indicates the relative duration of the agent
D) A numerical rating is required for commercial hood systems

Answer 9

A) There is no numerical rating for a Class K extinguisher

Question 10

What residue does a CO2 fire extinguisher leave when discharged?

Answer 10

None

Question 11

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

Answer 11

8

Question 12

What is the difference between dry powder and dry chemical extinguishing agents?

Answer 12

Each is rated for a different class of fire.

Question 13

Which agent is approved for use in a Class K system?

Answer 13

Wet Chemical

Question 14

What is used to pressurize a stored-pressure water extinguisher?

Answer 14

Compressed Air

Question 15

Class D agents work primarily by ___.

Answer 15

forming a crust over the fuel

Question 16

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

Answer 16

2.5

Question 17

What is the best way to extinguish a Class C fire?

Answer 17

Shut off the power and treat it as a Class A or B fire

Question 18

Which class of fire is depicted in the pictograph system by a burning trash can next to a wood fire?

Answer 18

A

Question 19

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

Answer 19

Cutting off the oxygen supply

Question 20

What is the primary extinguishing mechanism of dry chemical agents?

Answer 20

Interrupting the chemical chain reaction

Question 21

How do multipurpose dry chemical agents prevent rekindling of a Class A fuel?

Answer 21

By forming a crust over the fuel

Question 22

What is one disadvantage of CO2 extinguishers?

Answer 22

Short discharge range

Question 23

A Class B foam extinguisher is NOT rated for which fuel?
A) Gasoline
B) Diesel Fuel
C) Cooking Oil
D) Paint Thinner

Answer 23

C) Cooking Oil

Question 24

A Class K agent’s effect on the fuel is known as ___.

Answer 24

Saponification

Question 25

Which class of fire involves combustible metals?

Answer 25

D

Question 26

Which class of fire involve combustible cooking oils and fats?

Answer 26

K

Question 27

What does a rating of 40 on a Class B extinguisher mean?

Answer 27

Sufficient extinguishing power for 40 square feet of burning fuel

Question 28

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

Answer 28

C

Question 29

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

Answer 29

B

Question 30

Which class of fire is depicted in the pictograph system by a fire in a frying pan?

Answer 30

K

Question 31

Which fire extinguishing agent is best for use on sensitive electrical equipment?

Answer 31

Carbon Dioxide

Question 32

The weight of carbon dioxide is about ___ the weight of air.

Answer 32

1.5x

Question 33

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

Answer 33

Pull