Chapter 7

Below what temperature does carbon dioxide not perform well? 10 degrees Fahrenheit (-12 degrees Celsius) 0 degrees Fahrenheit (-18 degrees Celsius) 20 degrees Fahrenheit (-7 degrees Celsius) 30 degrees Fahrenheit (-1 degrees Celsius)

0 degrees Fahrenheit (-18 degrees Celsius)

About how many strokes of the pump handle does it take to build up the initial pressure on a backpack water extinguisher with a compression pump built into the side of the tank? 14 12 10 16

10

Within what distance from the fire must you be for the multipurpose dry-chemical fire extinguisher to be effective on a Class A fire? 5 to 25 feet (2 to 8 meters) 30 to 60 feet (9 to 15 meters) 15 to 40 feet (5 to 12 meters) 10 to 30 feet (3 to 9 meters)

10 to 30 feet (3 to 9 meters)

What is the most commonly used stored-pressure water extinguisher? 2.5 gallon (9 liter) model with 3-A rating 2.5 gallon (9 liter) model with 1-A rating 2.5 gallon (9 liter) model with 2-A rating 2.5 gallon (9 liter) model with 4-A rating

2.5 gallon (9 liter) model with 2-A rating

Above what weight will a portable fire extinguisher have a carrying handle? 12 pounds 10 pounds 4 pounds 3 pounds

3 pounds

What is the maximum amount of time that a larger hand-held dry-chemical extinguisher may discharge? 20 seconds 8 seconds 17 seconds 30 seconds

30 seconds

Within what distance from the fire must you be to be effective when attacking a Class A fire with a stored-pressure water fire extinguisher? 45 to 50 feet (13 to 14 meters) 40 to 45 feet (12 to 13 meters) 30 to 35 feet (10 to 11 meters) 35 to 40 feet (11 to 12 meters)

35 to 40 feet (11 to 12 meters)

Within what amount of time should electronic equipment be professionally cleaned when exposed to multipurpose dry-chemical extinguishing agents? 12 hours 48 hours 72 hours 24 hours

48 hours

What is the maximum height above the floor that the top of an extinguisher weighing up to 40 pounds (18 kilograms) should be located? 6 feet (1.8 meters) 5 feet (1.5 meters) 4 feet (1 meter) 3 feet (0.9 meter)

5 feet (1.5 meters)

Approximately how much do the backpack water extinguishers weigh when full? 60 pounds 30 pounds 50 pounds 40 pounds

50 pounds

What reach does the dry-powder fire extinguisher have then the nozzle is fully opened? 10 to 12 feet (3 to 3.5 meters) 8 to 10 feet (2.5 to 3 meters) 12 to 14 feet (3.5 to 4 meters) 6 to 8 feet (2 to 2.5 meters)

6 to 8 feet (2 to 2.5 meters)

What class foam extinguishers work by creating a blanket of foam on the surface of a burning liquid? Class B Class C Class A Class D

Class B

What class of fire would fire in a pot of molten roofing tar be considered? Class D Class A Class B Class C

Class B

What fire class are dry-powder extinguishers designed for use with? D B C A

D

Which is considered a primary use of the portable fire extinguisher? Extinguish fully-developed fires Control decay-stage fires Extinguish incipient-stage fires Move growth-stage fires

Extinguish incipient-stage fires

How should extinguishers with a fixed handle be carried? In a front pack In a backpack In the stronger hand In the weaker hand

In the stronger hand

What hazard area has most materials that are classified as noncombustible or materials that are arranged so a fire is not likely to spread? Light Medium Extra Ordinary

Light

What else should be done if a fire fighter must use an extinguisher that is unfamiliar to determine if it is suitable for the fire situation? Look at the label Reference the manual Ask the owner Use a different extinguisher

Look at the label

What are the fatty acids in cooking oils converted to by the wet agent extinguishers? Soap Water Softener Halon

Soap

Where should the dry-chemical agent be discharged first when fighting a Class B flammable liquid pool fire? Either side edge The far edge The near edge In the center

The near edge

What is introduced into the discharge stream of the foam fire extinguisher at the nozzle? Concentrate Water Foam Air

air

Which compound is used as the primary dry-chemical extinguishing agent that is rated for Class A, B, and C fires? Potassium chloride Ammonium phosphate Urea-based potassium bicarbonate Sodium bicarbonate

ammonium phosphate

What color circle is used with the "C" on Class C fire extinguishers? Red Yellow Blue Green

blue

Which of the following must be used on Class C fires? Carbon dioxide Wetting agents Water Wet chemicals

carbon dioxide

Which type of extinguisher do most buildings require? Class B Class A Class C Class D

class A

Which class fire is most often encountered in machine shops and repair shops? Class A Class C Class B Class D

class D

What class of fire involves combustible cooking oils and fats? Class K Class C Class A Class B

class K

When should a fire extinguisher be recharged? Monthly Every use Weekly Quarterly

every use

Where in the fryer should the wet chemical agent be gently dropped on the burning liquid? Either side Front or back Front or left side Back or left side

front or back

What color triangle is used with the "A" on Class A fire extinguishers? Green Red Blue Yellow

green

On what class of fire should a multipurpose dry-chemical extinguisher NOT be used? B K C A

k

Which of the following is an example of an ordinary hazard location? Church Kitchen with deep fat fryer Light manufacturing facility Woodworking shop

light manufacturing facility

How often should inspections of fire extinguisher on an apparatus take place? Monthly Annually Quarterly Bi-annually

monthly

What is used in the classification of extinguishers to indicate their effectiveness for Class A and Class B fires? Color Letter Shape Number

number

What should be done when overhauling an incipient-stage fire involving combustible metal filings? Place a thick layer of the extinguishing agent Shovel the filings into a bucket Move the filings around to check for hot spots Wash the extinguishing agent

place a thick layer of the extinguishing agent

What shape are the icons used in the pictograph system? Square Triangle Circle Star

square

What is NOT a correct step taken when operating a fire extinguisher? Push the safety pin Sweep the nozzle across the base of the flames Aim the nozzle at the base of the flame Squeeze the trigger to discharge the agent

sweep the nozzle across the base of the flames

What type of motion is best used to remove the pin and tamper seal on a portable fire extinguisher? Flipping Pulling Pushing Twisting

twisting

Which is an inexpensive and plentiful extinguishing agent? Water Carbon dioxide Foam Dry chemical

water

What can be done to determine how much agent is left in a partially discharged carbon dioxide extinguisher? Weigh it Hit it Float it Measure it

weigh it

What type of extinguishing agents are used for commercial kitchen fires involving cooking oil in deep fat fryers? Dry powder Gaseous agent Dry-chemical Wet-chemical

wet chemical

Which type of extinguishers do NOT have numerical ratings? Class B foam Carbon dioxide Dry-chemical Wet-chemical

wet chemical