Question 665Deck Safety70% to pass
What is the maximum oxygen content below which flaming combustion will no longer occur?
AI Explanation
The correct answer is C) 15%.
Flaming combustion will no longer occur below an oxygen concentration of approximately 15%. This is because a minimum oxygen concentration of around 15% is required to sustain combustion. Below this level, there is insufficient oxygen to support the chemical reactions necessary for flaming combustion to continue. The other options are incorrect because 1% oxygen is far too low to support any combustion, 10% is still below the minimum required, and 21% is the normal oxygen concentration in air, which is well above the threshold for flaming combustion to occur.
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