Fire Safety Basic Fire Safety Knowledge 5

Question 1

Which gas produced by fires is known as the 'silent killer' because it is odorless and colorless?

Accepted Answer

Carbon monoxide (CO)

Answer

Carbon monoxide is odorless and colorless, making it undetectable without a detector, and it causes more fire-related deaths than flames.

Question 2

What is the meaning of the term 'flashover' in a structural fire?

Accepted Answer

The rapid transition where all combustible materials in a room ignite simultaneously

Answer

Flashover is the near-simultaneous ignition of all combustibles in an enclosed space, typically occurring when temperatures reach 1,100°F (593°C).

Question 3

What should you do with a fire extinguisher after using it partially to fight a fire?

Accepted Answer

Have it refilled or replaced immediately

Answer

Even a partially discharged extinguisher must be recharged or replaced immediately because you cannot know if it will work adequately in the next emergency.

Question 4

In a high-rise building fire, occupants on unaffected floors are typically instructed to:

Accepted Answer

Shelter in place unless directed otherwise by fire safety personnel

Answer

High-rise fire protocols often call for shelter-in-place on unaffected floors because stairwells can become overcrowded and smoke conditions may be worse below.

Question 5

Which of the following best describes the 'fire triangle'?

Accepted Answer

The three elements needed for fire: fuel, heat, and oxygen

Answer

The fire triangle represents the three essential elements for combustion: fuel, heat, and oxygen — removing any one element extinguishes the fire.

Fire Safety Practice Test

Fire Safety Practice Test

Fire Safety Basic Fire Safety Knowledge 5