PST Exit Exam • Set 5 Question 24 of 30
What are the characteristics of Carbon Dioxide (CO2)?
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Direct Answer
Option B: It is heavier than oxygen
Carbon dioxide (CO2) is a colorless, odorless gas that is heavier than air (and oxygen). It suppresses fire by displacing oxygen in the environment, effectively smothering the fire.
All Options
A
It is bright green in color
B
It is heavier than oxygen
(Correct Answer)
C
It is lighter than oxygen
D
It supports combustion
Detailed Explanation & Context
Carbon dioxide (CO2) is a colorless, odorless gas that is heavier than air (and oxygen). It suppresses fire by displacing oxygen in the environment, effectively smothering the fire.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Personal Survival Techniques (PST).
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