Question 821 Deck Safety
70% to passWhich statement is TRUE concerning carbon dioxide?
A
It is used on class B and C fires.
B
It is heavier than air.
C
It is non-conductive.
D
All of the above are true.
AI Explanation
The correct answer is D) All of the above are true. 1) Carbon dioxide (CO2) is used on Class B (flammable liquids) and Class C (energized electrical equipment) fires because it is a non-conductive gas that effectively smothers the fire by displacing oxygen. 2) Carbon dioxide is heavier than air, so it settles and remains close to the fire source, continuing to smother the flames. 3) The other options are incorrect because they only state a single true fact about carbon dioxide, whereas the correct answer encompasses all three characteristics.
Related Questions
Q1969:The body plan of a vessel is a(n) _______________.
Q35:Which equipment is the primary source of generating a locating signal?
Q2708:The SS AMERICAN MARINER has the liquid load shown in table ST-0083 below. Use t...
Q779:Actuating the CO2 fixed system causes the shutdown of the _______________.
Q2482:Your vessel displaces 869 tons and measures 136'L x33'B. You ship a large wave o...
Ready to test your knowledge?
Take a Deck Safety Practice ExamOfficial Resources
Pass Your Coast Guard Licensing Exams!
Study offline, track your progress, and simulate real exams with the Coast Guard Exams app