Question 19 of 30
The flammable range of a gas is
A
Above UFL
B
Between the LFL and UFL in air
C
Between LFL and UFL in hydrogen
D
Below LFL
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Answer & Explanation
The correct answer is Option B: Between the LFL and UFL in air.
The flammable range, or explosive limits, of a gas mixture in air is defined by the concentrations that can support combustion. It lies between the Lower Flammable Limit (LFL) and the Upper Flammable Limit (UFL).