LGTCO/LGTF Exit Exam • Set 2 Question 20 of 30
What is the density of Propane vapor at ambient temperature compared to air?
✓
Direct Answer
Option C: Heavier than air (relative density ~1.5)
Propane vapor possesses a relative density of approximately 1.5 relative to air, rendering it significantly heavier than air. Consequently, unignited releases pool near deck levels and collect in lower spaces.
All Options
A
Lighter than air
B
Same as helium
C
Heavier than air (relative density ~1.5)
(Correct Answer)
D
Zero weight
Detailed Explanation & Context
Propane vapor possesses a relative density of approximately 1.5 relative to air, rendering it significantly heavier than air. Consequently, unignited releases pool near deck levels and collect in lower spaces.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Liquefied Gas Tanker Cargo Operations (LGTCO/LGTF).
Advertisement
Practice Full LGTCO/LGTF Set 2
Test yourself with 30 interactive questions, live timer, and instant score.