The middle zone of a candle flame is also called the zone of ______ combustion.
complete
partial
spontaneous
In the middle zone of candle flame, incomplete combustion takes place.
In a candle flame, what is the colour of : (a) innermost zone (b) middle zone, and (c) outer zone ?
(a) Make a labelled diagram of a candle flame:
(b) What makes the middle zone of a candle flame luminous (or light-giving) ?
Name the various zones of a candle flame. Which zone (or part) of a candle flame is the least hot (or coldest) ?