Chapter 6

Question 1

Which of the following is Not releases with complete combustion of a material

Answer 1

Hydrogen cyanide

Question 2

Which sets the stage for understanding the amount of fuels that are off gassing in a given space

Answer 2

Smoke volume

Question 3

What is turbulent smoke that has filled a compartment a sign of

Answer 3

Flashover

Question 4

Which is true about turbulent smoke

Answer 4

it is caused by serious heat

Question 5

What tells you how much fuel is laden in the smoke

Answer 5

Density

Question 6

What is the collective flammable range in air of gases typically found in smoke

Answer 6

1% to 74%

Question 7

What color will ash add to the smoke

Answer 7

White

Question 8

How many phases will the fire go through that is ventilation controlled

Answer 8

Six

Question 9

Where does flame spread when the smoke has pressurized a room

Answer 9

With the smoke flow

Question 10

Where does flame spread when the smoke has pressurized a room

Answer 10

With the smoke flow

Question 11

In what timeframe does the backdraft occur after introduction of air

Answer 11

Instantaneous

Question 12

What warning sign is present if there is brown smoke from structural spaces of a lightweight wooden building

Answer 12

Collapse

Question 13

Which hostile fire event has a warning sign of exhaust flow paths that intermittently puff or try to suck air

Answer 13

Explosive growth phase

Question 14

What growth phase of the ventilation controlled fire is also been labeled the fuel controlled phase

Answer 14

Initial growth phase

Question 15

What color smoke is seen before a backdraft occurs

Answer 15

Yellowish gray

Question 16

Which is seen as warning sign of a flam-over

Answer 16

Increase in smoke speed

Question 17

What should be looked at when trying to determine if white/grey smoke is from early stage heating or late stage heating

Answer 17

Veleocity

Question 18

Which typically occur in a trapped smoke area away from the fire

Answer 18

Smoke explosion

Question 19

What is the first step taken when reading smoke

Answer 19

View the smoke VVDC

Question 20

What is the breaking down compounds into other substances during pyrolysis

Answer 20

Heat

Question 21

What is the explosive growth phase a combination of

Answer 21

Flashover and Flame over

Question 22

What phase occurs immediately after the ventilation limited phases

Answer 22

Explosive growth phase

Question 23

What color smoke is seen with almost all materials when they start smoking

Answer 23

White

Question 24

After what amount of time during a PPA should fire behavior and smoke flow increase at the exhaust opening

Answer 24

One minute

Question 25

How many of the four attributes of smoke must be changing for the ISO to deem firefighting efforts successful

Answer 25

Four

Question 26

What should happen to smoke when rather is cold and humid

Answer 26

Sink and remain dense

Question 27

What is seen as the intermittent ignition of small pockets of smoke

Answer 27

Ghosting

Question 28

What is a suspended or propelled liquid in smoke

Answer 28

Aerosol

Question 29

Why does smoke rise

Answer 29

Due to heat

Question 30

Carbon Monoxide (CO)

Answer 30

Self ignition Temp= 1,128F Flammable Range= 12-74% CO is considered a gas only and therefore doesn't have flashpoint

Question 31

Hydrogen cyanide (HCN)

Answer 31

Flashpoint=0F(-18C) Self ignition Temp= 1,000F Flammable Range= 5-40% HCN is produced when high temperatures break down nitrogen containing products. HCN is quite flammable and is considered extremely toxic

Question 32

Benzene (C6H6)

Answer 32

Flashpoint= 12F Self ignition Temp= 928F Flammable Range= 1-8% Most plastics release benzene while burning or pyrolyizing. Benzene is also a common product from the burning of fuels oils

Question 33

Acrolein (C3H4O)

Answer 33

Flashpoint= -15F Self ignition Temp= 450F Flammable Range= 3-31% Acrolein is a by product from the incomplete combustion of wood, wood products and the cellulosic materials. "poly plastics" can also render acrolein

Question 34

Turbulent smoke that fills a box

Answer 34

Warning sign of impending flashover

Question 35

Thick, black, fast smoke

Answer 35

Close to the seat of the fire, super hot smoke capable of instant ignition may be a ventilation limited fire that needs air

Question 36

Thin, black, fast smoke

Answer 36

Flame pushed smoke, fire nearby that is well ventilated

Question 37

Dirty white smoke with velocity

Answer 37

Heat pushed smoke that has traveled a distance or has had the carbon/hydrocarbon filtered (like smoke through a crack)

Question 38

Same color (white/grey) of smoke and same velocity from multiple openings

Answer 38

Deep-Seeded fire, possibly located well within a building or in combustible voids and concealed spaces

Question 39

Low volume white smoke and same velocity from multiple openings

Answer 39

Working fire deep within

Question 40

Browns smoke

Answer 40

Unfinished wood reaching late heating(can support flame) usually a sign that a contents fire is transitioning into a structure fire, when coming from a structural spaces of lightweight wood structures, a warning sign of collapse

Question 41

Yellowish grey smoke from cracks or seams

Answer 41

Sulfur compounds: a warning sign of impending backdraft