The colour of the outer zone of a candle flame is _________.
The outer zone of candle flame is blue in colour. It is where the complete combustion takes place.
In a candle flame, what is the colour of : (a) innermost zone (b) middle zone, and (c) outer zone ?
Name the various zones of a candle flame. Which zone (or part) of a candle flame is the least hot (or coldest) ?
(a) Make a labelled diagram of a candle flame:
(b) What makes the middle zone of a candle flame luminous (or light-giving) ?
Which zone of a candle flame is the hottest ?
The colour of outer zone of a candle flame is ___.