Fire Extinguishers Flashcards

1
Q

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

A

Kitchen

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2
Q

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

A

Faster deployment

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3
Q

Which class of fire includes cloth?

A

A

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4
Q

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

A

Water

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5
Q

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

A

Carbon Dioxide

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6
Q

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

A

Yellow Star

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7
Q

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

A

A

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8
Q

A Class C extinguisher is rated for use on ___.

A

energized electrical equipment

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9
Q

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

A

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

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10
Q

What residue does a CO2 fire extinguisher leave when discharged?

A

None

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11
Q

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

A

8

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12
Q

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

A

Each is rated for a different class of fire.

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13
Q

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

A

Wet Chemical

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14
Q

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

A

Compressed Air

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15
Q

Class D agents work primarily by ___.

A

forming a crust over the fuel

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16
Q

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

A

2.5

17
Q

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

A

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

18
Q

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

A

A

19
Q

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

A

Cutting off the oxygen supply

20
Q

What is the primary extinguishing mechanism of dry chemical agents?

A

Interrupting the chemical chain reaction

21
Q

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

A

By forming a crust over the fuel

22
Q

What is one disadvantage of CO2 extinguishers?

A

Short discharge range

23
Q

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

A

C) Cooking Oil

24
Q

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

A

Saponification

25
Q

Which class of fire involves combustible metals?

A

D

26
Q

Which class of fire involve combustible cooking oils and fats?

A

K

27
Q

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

A

Sufficient extinguishing power for 40 square feet of burning fuel

28
Q

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

A

C

29
Q

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

A

B

30
Q

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

A

K

31
Q

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

A

Carbon Dioxide

32
Q

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

A

1.5x

33
Q

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

A

Pull