Fire And Rescue Operations (NQF 4) Practice Questions - Further Education And Training Certificate Fire And Rescue Operations Assessment (NQF Level 4) Exam

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Which of the following is a classic indicator that a compartment fire is under ventilation-limited conditions and poses an immediate danger of a backdraft?

A rapidly rising column of clean, white steam. Pulsing, turbulent, yellowish-grey smoke puffing from doors or window cracks, combined with hot, soot-covered windows. A well-defined neutral plane in the middle of a doorway with rapid air inflow at the bottom. Light, drifting grey smoke with visible lazily rolling flames in the room.

Correct Answer:

Pulsing, turbulent, yellowish-grey smoke puffing from doors or window cracks, combined with hot, soot-covered windows.

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