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Fire Fighting QUESTION #5590
Question 1
What is the fourth element added in the Fire Tetrahedron that is not present in the Fire Triangle?
  • Water
  • Carbon Dioxide
  • Chemical Chain Reaction✔️
  • Pressure
Correct Answer Explanation
Modern fire science adds the Chemical Chain Reaction as a fourth element to form the Fire Tetrahedron. This self-sustaining molecular breakdown keeps the fire going even if basic elements are marginally present.