PST Exit Exam • Set 8 Question 2 of 30
What are the core physical/smothering characteristics of Carbon Dioxide (CO2) when used for firefighting?
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Direct Answer
Option C: All of the above
Carbon Dioxide is an effective fire extinguishing agent because it is heavier than air, displaces oxygen, and is non-conductive, making it suitable for electrical fires; however, it is an asphyxiant requiring caution.
All Options
A
It displaces oxygen
B
It is in itself not dangerous (not toxic/poisonous in low levels)
C
All of the above
(Correct Answer)
D
It is heavier than oxygen
Detailed Explanation & Context
Carbon Dioxide is an effective fire extinguishing agent because it is heavier than air, displaces oxygen, and is non-conductive, making it suitable for electrical fires; however, it is an asphyxiant requiring caution.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Personal Survival Techniques (PST).
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