PSSR Exit Exam • Set 13 Question 29 of 30
Oxygen deficiency in an enclosed space can cause.
✓
Direct Answer
Option D: Unconsciousness or death
Normal ambient air contains 20.9% oxygen; oxygen deficiency below 19.5% impairs brain function, and levels below 16% cause rapid unconsciousness and fatality.
All Options
A
Better breathing
B
Improved visibility
C
Higher wages
D
Unconsciousness or death
(Correct Answer)
Detailed Explanation & Context
Normal ambient air contains 20.9% oxygen; oxygen deficiency below 19.5% impairs brain function, and levels below 16% cause rapid unconsciousness and fatality.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Personal Safety & Social Responsibilities (PSSR).
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