Fire Safety Fire Extinguisher Types and Usage 2

Question 1

A dry chemical fire extinguisher labeled 'ABC' can be used on which types of fires?

Accepted Answer

Class A, B, and C fires

Answer

ABC-rated dry chemical extinguishers are multipurpose and effective on ordinary combustibles, flammable liquids, and electrical fires.

Question 2

What is the primary hazard of using a water extinguisher on an electrical fire?

Accepted Answer

It causes electrocution

Answer

Water conducts electricity, so using a water extinguisher on an energized electrical fire creates a serious electrocution risk.

Question 3

What is the typical effective range of a portable fire extinguisher's discharge stream?

Accepted Answer

6–10 feet

Answer

Most portable fire extinguishers have an effective discharge range of approximately 6 to 10 feet.

Question 4

Which fire extinguisher type leaves no residue and is safe for use around sensitive electronic equipment?

Accepted Answer

Carbon dioxide (CO2)

Answer

CO2 extinguishers discharge gas that dissipates completely, leaving no residue that could damage computers or electronics.

Question 5

What does a pressure gauge in the green zone on a fire extinguisher indicate?

Accepted Answer

The extinguisher is fully charged and ready

Answer

A needle in the green zone means the extinguisher is properly pressurized and ready for use.

Fire Safety Practice Test