FE FE Emergency Response & Extinguisher Selection

Question 1

Which fire extinguisher agent is recommended for a Class K commercial kitchen fire involving hot cooking oils?

Accepted Answer

Wet chemical (potassium acetate/citrate solution)

Answer

ABC dry chemical

Answer

CO2

Answer

Water mist

Question 2

A technician is selecting an extinguisher for a server room. Which agent is preferred to minimize equipment damage?

Accepted Answer

CO2 or clean agent (Halotron/FM-200)

Answer

ABC dry chemical

Answer

Water

Answer

AFFF foam

Question 3

Which class of fire extinguisher is required to carry an electrical non-conductivity rating?

Accepted Answer

Class C (any extinguisher used on energized electrical equipment)

Answer

Class A only

Answer

Class B only

Answer

Class D only

Question 4

What action should be taken first upon discovering a small fire before using a fire extinguisher?

Accepted Answer

Activate the building fire alarm and ensure occupants are evacuating

Answer

Immediately discharge the extinguisher

Answer

Call the manufacturer's service hotline

Answer

Move combustible materials away from the fire

Question 5

For a Class D combustible metal fire involving magnesium, which extinguisher should be used?

Accepted Answer

Dry powder specifically rated for the metal involved (e.g., Met-L-X)

Answer

ABC dry chemical

Answer

CO2

Answer

Water

Question 6

What is the UL rating system used to communicate the firefighting capability of a portable extinguisher?

Accepted Answer

A letter-number rating (e.g., 2A:10B:C) where the number indicates extinguishing potential

Answer

A numerical code indicating gallons of agent

Answer

A color band indicating hazard class only

Answer

A weight-based code indicating agent mass