Question 4 of 30
The basic fire theory says that a fire needs 4 main elements in order to start: Heat, Fuel, Oxygen and ____?
A
A) Hydrogen Sulphide
B
B) Carbon-dioxide
C
C) A chain reaction
D
D) Benzene
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Answer & Explanation
The correct answer is Option C: C) A chain reaction.
The fire tetrahedron, representing the four essential elements for fire to exist and sustain itself, includes Heat, Fuel, Oxygen, and a Chain Reaction. Removing any one of these elements will extinguish the fire.