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Combustion & Flame Quiz

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  • In which zone partial combustion of fuel take place?
    The middle zone /luminous zone
  • How many zones are there in a flame?
    Three
  • Why does charcoal not produce flame?
    Because it does not vaporise on burning.
  • Which zone of candle is the hottest?
    The non luminous/ outermost zone
  • In which zone complete combustion of fuel take place?
    The non luminous/ outermost zone
  • Which zone of candle is the coldest?
    The innermost zone
  • What is the colour of outer most flame?
    Blue
  • What is the colour of inner most flame?
    Black
  • Why do we get soot if a spoon is placed in the middle zone of the flame?
    Because of deposition of unburnt carbon particles.
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