Question 250Safety & Environmental - Assistant Engineer
70% to passTo fight a class "C" fire, you should use carbon dioxide or _______________.
Adry chemical
Bchemical foam
Cchemically treated saw dust
Dmechanical foam
AI Explanation
The correct answer is A) dry chemical. To fight a class "C" fire, which is an electrical fire, you should use carbon dioxide or dry chemical extinguishers. Carbon dioxide and dry chemical agents are effective at extinguishing electrical fires because they work by smothering the fire and interrupting the chemical reaction, without leaving behind any conductive residue that could damage electrical equipment. The other options are incorrect because chemical foam and mechanical foam are typically used for class A (ordinary combustible) and class B (flammable liquid) fires, while chemically treated sawdust is not a standard firefighting agent.
Related Questions
Q92:Pressure-vacuum relief valves, as used on tank vessels, are usually set to opera... Q98:After ballasting a fuel tank, which of the listed valves should you close FIRST?... Q47:Which of the following hazards is associated with the handling of petroleum prod... Q331:According to MARPOL, the definition of medical waste does NOT include __________... Q154:The tendency of a ship to resist a change in trim is _______________.
Ready to test your knowledge?
Take a Safety & Environmental - Assistant Engineer Practice ExamOfficial Resources