F80 Fire Behavior and Combustion Principles

Question 1

What are the three elements of the fire triangle?

Accepted Answer

Fuel, oxygen, and heat

Answer

Fuel, water, and heat

Answer

Oxygen, nitrogen, and heat

Answer

Fuel, carbon dioxide, and heat

Question 2

What is flashover in fire behavior?

Accepted Answer

The rapid transition to full room involvement when all combustible surfaces ignite simultaneously

Answer

When a fire is fully extinguished

Answer

When sprinkler heads activate automatically

Answer

The initial ignition of a fire at its point of origin

Question 3

Which class of fire involves flammable and combustible liquids?

Accepted Answer

Class B

Answer

Class A

Answer

Class C

Answer

Class D

Question 4

What is the primary product of complete combustion of hydrocarbons?

Accepted Answer

Carbon dioxide and water vapor

Answer

Carbon monoxide

Answer

Hydrogen cyanide

Answer

Black soot particles

Question 5

Which gas is most responsible for fire-related fatalities?

Accepted Answer

Carbon monoxide

Answer

Carbon dioxide

Answer

Oxygen depletion alone

Answer

Nitrogen dioxide

Question 6

What is backdraft?

Accepted Answer

A rapid combustion explosion caused by sudden oxygen introduction to a smoldering, oxygen-depleted fire

Answer

A fire that has been suppressed by CO2

Answer

The decay phase of a fire's development cycle

Answer

Fire spreading in the direction opposite to wind flow