18. Which of the following statements is true about fire extinguishers?

Answer: D

Explanation:

When using the fire extinguisher the hose is aimed at the base of the fire.

Aiming the hose at the base of the fire is crucial for effectively extinguishing it, as this targets the fuel source rather than the flames themselves.

A) There is only one type of fire extinguisher and it can be used for any type of fire.

This statement is incorrect because there are several different types of fire extinguishers, each designed to combat specific classes of fire (such as Class A, B, C, D, and K). Using the wrong type of extinguisher can be ineffective or even dangerous.

B) To spray the extinguisher the handle is squeezed before pulling the safety pin.

This statement is false. The correct procedure involves pulling the safety pin first to unlock the mechanism, and then squeezing the handle to release the extinguishing agent. Squeezing the handle before pulling the pin would not allow for the extinguisher to function properly.

C) Extinguishers are held upside down for proper emptying when spraying.

This statement is incorrect. Fire extinguishers should not be held upside down; they should be held upright to ensure the extinguishing agent is effectively dispensed. Holding an extinguisher upside down may prevent proper operation and can lead to safety hazards.

D) When using the fire extinguisher the hose is aimed at the base of the fire.

This statement is true and reflects the correct technique for using a fire extinguisher. Aiming at the base of the fire helps to extinguish the fuel source, which is essential for successfully putting out the fire.

Conclusion

The correct answer, D, emphasizes the importance of targeting the source of the fire for effective extinguishing. Options A, B, and C present misconceptions about fire extinguishers that could lead to ineffective fire safety practices. Understanding the proper use of fire extinguishers is vital for ensuring safety in fire emergencies.