1. Combustible: K _ Non-combustible: W 2. Combustion supporter Oxygen Combustion non-supporter N 3. Rapid combustion: LPG :: Spontaneous combustion: S 4. Middle zone: L 5. Primary fuel: D. Innermost zone: Dark Secondary fuel: C_ 6. Renewable fuel: F Non-renewable fuel: Petroleum 7. C Carboxyhaemoglobin :: C_Globel warning 8. Soda-acid fire extinguisher: S Carbon dioxide fire extinguisher: Carbon dioxide
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Answer - Carbon dioxide is a material
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