American Chemical Society (ACS) Laboratory Safety Practice Test 2025 – All-in-One Guide to Mastering Lab Safety Procedures!

In the event of a fire that cannot be controlled in a laboratory setting, the appropriate action is to immediately evacuate and call for help. Laboratory environments often contain hazardous materials and flammable substances, which can exacerbate a fire situation. In this scenario, personal safety is the highest priority.

Evacuating the area ensures that individuals are clear of harm's way as the fire may rapidly spread or become uncontrollable. After securing personal safety, notifying emergency services is crucial to ensure that trained professionals with the appropriate equipment can respond effectively to the situation.

Attempting to extinguish a fire that is unmanageable can lead to greater risk of injury, and it may distract from the immediate requirement to leave the area. Waiting for the fire to extinguish on its own is not advisable, as fires can behave unpredictably and may reignite or spread. Using water to douse a fire, depending on the materials involved, can also be dangerous; certain fires, such as those involving oils or certain chemicals, can escalate with water. Therefore, the immediate evacuation and summoning of help is the best course of action in a laboratory fire scenario.