The outermost zone is the hottest part of a candle flame.
The outermost zone of a candle flame is the :
(a) least hot part
(b) coldest part
(c) hottest part
(d) moderately hot part
Which zone of a candle flame is the hottest ?
Name the various zones of a candle flame. Which zone (or part) of a candle flame is the least hot (or coldest) ?