F01 Fire Classification & Extinguishers 2

Question 1

Which class of fire involves flammable liquids such as gasoline, oil, or paint thinner?

Accepted Answer

Class B

Answer

Class A

Answer

Class C

Answer

Class D

Question 2

A CO2 (carbon dioxide) fire extinguisher is most effective on which types of fires?

Accepted Answer

Class B and C fires (liquids and electrical)

Answer

Class A (ordinary combustibles) only

Answer

Class D (combustible metals) only

Answer

Class K (cooking oils) only

Question 3

What does the letter 'A' rating on a fire extinguisher indicate?

Accepted Answer

The extinguisher is effective on ordinary combustibles

Answer

The extinguisher is approved for aircraft use

Answer

The extinguisher capacity in gallons

Answer

The extinguisher is approved for asphalt work

Question 4

Which extinguisher type should NEVER be used on electrical fires?

Accepted Answer

Water (stored pressure)

Answer

Carbon dioxide (CO2)

Answer

Dry chemical (ABC)

Answer

Halotron

Question 5

How should a fireguard hold a portable fire extinguisher when using the PASS technique?

Accepted Answer

Aim at the base of the fire and use a side-to-side sweeping motion

Answer

Aim at the top of the flames and sweep side to side

Answer

Hold the nozzle still and aim at the center of the fire

Answer

Aim at the ceiling above the fire to disperse agent downward

Question 6

What minimum fire extinguisher rating is typically required at a hot work site under FDNY regulations?

Accepted Answer

2-A:20-B:C

Answer

1-A:10-B:C

Answer

4-A:40-B:C

Answer

10-A:80-B:C