![Air enters a bord and pillar panel at 10 ppm CO and 20.78% O2](https://www.gkseries.com/blog/wp-content/uploads/2023/10/Air-enters-a-bord-and-pillar-panel-at-10-ppm-CO-and-20.78-O2.jpg)
Q. Air enters a bord and pillar panel at 10 ppm CO and 20.78% O2. The air at the panel return has 80 ppm CO and 20.52% O2. The ‘Graham’s ratio’ for the status of fire in the panel in % is
Q. Air enters a bord and pillar panel at 10 ppm CO and 20.78% O2. The air at the panel return has 80 ppm CO and 20.52% O2. The ‘Graham’s ratio’ for the status of fire in the panel in % is
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