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Hlw guys ❤️ pls answer these....... no spamming best answers will be marked brainliest ​

Answer» 1) oxygen2) burn are called combustible substances. For example: Paper, cloth, COOKING gas (LPG), CNG, Kerosene oil, wood, charcoal, etc.3)Carbon dioxide4) combustion5)visible6)Carbon dioxide7)Carbon dioxide8)ignition9)gets  ,  ignition10)acid rain11)Monoammonium phosphate12)Kj13)CNG14)rapid combustion15) (middle) luminous zoneQ)Calorific VALUE = heat produced / weight of fuel USED in Kgs                              =105000/7.5                               =14000


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