AIGF Exit Exam • Set 12 Question 23 of 30
The principal constituents of natural gas, methane, ethdne, and propane are coas.dt:"1 ,;s simple asphyxiants because: . • ) . • • ' . • • , . • . ...
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Direct Answer
Option A: they can absorb oxygen in a close environment O-
Methane, ethane, and propane are classified as simple asphyxiants because they are non-toxic but displace oxygen in enclosed spaces, reducing O2 below life-sustaining levels.
All Options
A
they can absorb oxygen in a close environment O-
(Correct Answer)
B
they can displace oxygen in a close environment
C
they can react with oxygen in a ciose environmert
D
they can form hydrates with oxygen in a close environment
Detailed Explanation & Context
Methane, ethane, and propane are classified as simple asphyxiants because they are non-toxic but displace oxygen in enclosed spaces, reducing O2 below life-sustaining levels.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Ships subject to the IGF Code (AIGF).
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