Ontario Security Guard Licence Exam Prep · Question
A fire involving combustible metals such as magnesium or potassium is classified as:
A 'Class D' fire involves combustible metals like magnesium, sodium, or potassium. Water should never be used on these fires as it can cause a violent reaction.
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Question: A fire involving combustible metals such as magnesium or potassium is classified as:
Answer options:
- Class A.
- Class B.
- Class C. ✅ Class D.
Correct answer: Class D.
Explanation: A 'Class D' fire involves combustible metals like magnesium, sodium, or potassium. Water should never be used on these fires as it can cause a violent reaction. Specialized dry powder agents are required.
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